19-0259; Rev 2a; 2/98
Complete, Isolated RS-485/RS-422
Data Interface
_________________General Description
The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B are complete, electrically isolated, RS-485/ RS-422 data-communications interface solutions in a hybrid microcircuit. Transceivers, optocouplers, and a transformer provide a complete interface in a standard DIP package. A single +5V supply on the logic side powers both sides of the interface.
The MAX1480B/MAX1480C/MAX1490B feature reduced- slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The MAX1480A/MAX1490A driver slew rate is not limited, allowing transmission rates up to 2.5Mbps. The MAX1480A/B/C are designed for half-duplex communication, while the MAX1490A/B feature full-duplex communication.
Drivers are short-circuit current limited and protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a highimpedance state. The receiver input has a fail-safe feature that guarantees a known output (RO low for the MAX1480A/B/C, RO high for the MAX1490A/B/C) if the input is open circuit.
The MAX1480A/MAX1480B/MAX1480C/MAX1490A/ MAX1490B typically withstand 1600VRMS (1 minute) or 2000VRMS (1 second). Their isolated outputs meet all RS-485/RS-422 specifications. The MAX1480A/B/C are available in a 28-pin DIP package, and the MAX1490A/B are available in a 24-pin DIP package.
_____________________Selection Table
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HALF/ |
DATA |
SLEW- |
DRIVER |
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ENABLE |
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PART |
FULL |
RATE |
RATE |
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TIME |
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DUPLEX |
(Mbps) |
LIMITED |
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(µs) |
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MAX1480A |
Half |
2.5 |
No |
0.2 |
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MAX1480B |
Half |
0.25 |
Yes |
35 |
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MAX1480C |
Half |
0.25 |
Yes |
0.5 |
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MAX1490A |
Full |
2.5 |
No |
— |
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MAX1490B |
Full |
0.25 |
Yes |
— |
________________________Applications
Isolated RS-485/RS-422 Data Interface Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks Automatic Test Equipment
HVAC/Building Control Networks
____________________________Features
♦Isolated Data Interface, Typically to 1600VRMS (1 minute)
♦Slew-Rate Limited for Errorless Data Transmission (MAX1480B/MAX1480C/MAX1490B)
♦High-Speed, Isolated, 2.5Mbps RS-485/RS-422 Interface (MAX1480A/MAX1490A)
♦Full-Duplex Data Communication (MAX1490A/B)
♦-7V to +12V Common-Mode Input Voltage Range with Respect to Isolated Ground
♦Single +5V Supply
♦Current Limiting and Thermal Shutdown for Driver Overload Protection
♦Standard 0.6" DIP Package:
28-Pin DIP (MAX1480A/B/C)
24-Pin DIP (MAX1490A/B)
_______________Ordering Information
PART† |
TEMP. RANGE PIN-PACKAGE |
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MAX1480ACPI |
0°C to +70°C |
28 Wide Plastic DIP |
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MAX1480AEPI |
-40°C to +85°C |
28 Wide Plastic DIP |
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Ordering Information continued at end of data sheet.
† Data rate for “A” parts is up to 2.5Mbps. Data rate for “B” and “C” parts is up to 250kbps.
__________________Pin Configurations
TOP VIEW
VCC1 1
VCC2 2
D1 3
D2 4
GND1 5
FS 6
SD 7
VCC3 8
DI 9
VCC4 10
RO 11
GND2 12
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24 |
AC1 |
MAX1490A/B |
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23 |
AC2 |
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22 |
ISO VCC1 |
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21 |
ISO RO DRV |
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MAX845 |
MAX488 |
MAX490 |
20 |
A |
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19 |
B |
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18 |
Z |
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17 |
Y |
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16 |
ISO COM1 |
15 ISO DI DRV
14 |
ISO VCC2 |
13 |
ISO RO LED |
ISOLATION BARRIER
DIP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
MAX1490A/B MAX1480A/B/C,
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.
MAX1480A/B/C, MAX1490A/B
Complete, Isolated RS-485/RS-422
Data Interface
ABSOLUTE MAXIMUM RATINGS
With Respect to GND_ |
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Supply Voltage (VCC_)........................................... |
-0.3V to +6V |
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Control Input Voltage (SD, FS)............... |
-0.3V to (VCC_ + 0.3V) |
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Receiver Output Voltage |
(RO, |
........RO) |
-0.3V to (VCC_ + 0.3V) |
Output Switch Voltage (D1, D2)........................................ |
+12V |
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With Respect to ISO COM_ |
-0.3V to (ISO VCC_ + 0.3V) |
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Control Input Voltage (ISO DE_ ) .... |
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Driver Input Voltage (ISO DI_ ) ....... |
-0.3V to (ISO VCC_ + 0.3V) |
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Receiver Output Voltage (ISO RO_) ... |
-0.3V to (ISO VCC_ + 0.3V) |
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Driver Output Voltage (A, B, Y, Z ) ...................... |
-8V to +12.5V |
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Receiver Input Voltage (A, B).............................. |
-8V to +12.5V |
LED Forward Current (DI, DE, ISO RO LED) |
...................... |
50mA |
Continuous Power Dissipation (TA = +70°C) |
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24-Pin Plastic DIP (derate 8.7mW°C above .....+70°C) |
696mW |
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28-Pin Plastic DIP (derate 9.09mW/°C above ..+70°C) |
727mW |
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Operating Temperature Ranges |
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MAX1480_CPI/MAX1490_CPI.............................. |
0°C to +70°C |
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MAX1480_EPI/MAX1490_EPI ........................... |
- 40°C to +85°C |
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Storage Temperature Range ............................. |
- 65°C to +160°C |
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Lead Temperature (soldering, 10sec) ............................. |
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+300°C |
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC_ = 5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C.) (Notes 1, 2)
PARAMETER |
SYMBOL |
CONDITIONS |
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MIN |
TYP |
MAX |
UNITS |
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Switch Frequency |
fSWL |
VFS = 0V |
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535 |
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kHz |
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fSWH |
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FS = VCC_ or open |
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725 |
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MAX1480A, |
RL = ∞ |
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60 |
90 |
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DE´ = VCC_ or open |
RL = 54Ω |
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120 |
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MAX1480B, |
RL = ∞ |
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35 |
45 |
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DE´ = VCC_ or open |
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RL = 54Ω |
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95 |
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35 |
75 |
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Operating Supply Current |
ICC |
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MAX1480C, |
RL = ∞ |
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mA |
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DE´ = VCC_ or open |
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RL = 54Ω |
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95 |
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MAX1490A |
RL = ∞ |
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100 |
150 |
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RL = 54Ω |
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170 |
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MAX1490B |
RL = ∞ |
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65 |
125 |
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RL = 54Ω |
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130 |
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Shutdown Supply Current |
ISHDN |
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SD = VCC_ |
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0.2 |
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µA |
(Note 3) |
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Shutdown Input Threshold |
VSDH |
High |
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2.4 |
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V |
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VSDL |
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Low |
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0.8 |
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Shutdown Input Leakage |
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10 |
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pA |
Current |
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FS Input Threshold |
VFSH |
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High |
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2.4 |
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V |
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VFSL |
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Low |
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0.8 |
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FS Input Pull-Up Current |
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FS low |
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50 |
µA |
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FS Input Leakage Current |
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FS high |
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10 |
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pA |
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DE´, DI´ |
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Input High Voltage |
VIH |
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VCC_ - 0.4 |
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V |
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Input Low Voltage |
VIL |
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DE´, DI´ |
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0.4 |
V |
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Isolation Resistance |
RISO |
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TA = +25°C, VISO = 50VDC |
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100 |
10,000 |
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MΩ |
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Isolation Capacitance |
CISO |
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TA = +25°C, VISO = 50VDC |
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10 |
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pF |
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Differential Driver Output |
VOD1 |
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8 |
V |
(no load) |
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2 _______________________________________________________________________________________
Complete, Isolated RS-485/RS-422
Data Interface
ELECTRICAL CHARACTERISTICS (continued)
(VCC_ = 5V ±10%, VFS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C.) (Notes 1, 2)
PARAMETER |
SYMBOL |
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CONDITIONS |
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MIN |
TYP MAX |
UNITS |
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Differential Driver Output |
VOD2 |
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R = 50Ω (RS-422) |
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2 |
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V |
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(with load) |
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R = 27Ω (RS-485), Figure 4 |
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1.5 |
5 |
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Change in Magnitude of |
VOD |
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R = 27Ω or 50Ω , Figure 4 |
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Differential |
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0.3 |
V |
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Driver Output Voltage for |
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Common Mode |
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0.3 |
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Complementary Output States |
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Driver Common-Mode Output |
VOC |
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R = 27Ω or 50Ω , Figure 4 |
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4 |
V |
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VIN = 12V |
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MAX1490A/B |
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0.25 |
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Input Current (A, B) |
ISO IIN |
DE´ = 0V, |
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MAX1480A/B/C |
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1 |
mA |
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VCC_ = 0V or 5.5V |
VIN = -7V |
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MAX1490A/B |
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0.2 |
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MAX1480A/B/C |
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0.8 |
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Receiver Input Resistance |
RIN |
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-7V ≤ VCM ≤ 12V |
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12 |
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kΩ |
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Receiver Differential Threshold |
VTH |
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-7V ≤ VCM ≤ 12V |
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-0.2 |
0.2 |
V |
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Receiver Input Hysteresis |
VTH |
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VCM = 0V |
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70 |
mV |
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Receiver Output/Receiver |
VOL |
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Using resistor values listed in Tables 1 and 2 |
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0.4 |
V |
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Output Low Voltage |
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Receiver Output/Receiver |
IOH |
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VOUT = 5.5V |
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250 |
µA |
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Output High Current |
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Driver Short-Circuit Current |
ISO IOSD |
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-7V ≤ VO ≤ 12V (Note 4) |
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100 |
mA |
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SWITCHING CHARACTERISTICS—MAX1480A/MAX1490A
(VCC_ = 5V ±10%, FS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C.)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
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Driver Input to Output |
tPLH |
Figures 5 and 7, RDIFF = 54Ω , |
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100 |
275 |
ns |
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Propagation Delay |
tPHL |
CL1 = CL2 = 100pF |
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100 |
275 |
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Driver Output Skew |
tSKEW |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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25 |
90 |
ns |
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Driver Rise or Fall Time |
tR, tF |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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15 |
40 |
ns |
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Driver Enable to Output High |
tZH |
Figures 6 and 8, CL = 100pF, S2 closed |
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0.2 |
1.5 |
µs |
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(MAX1480A only) |
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Driver Enable to Output Low |
tZL |
Figures 6 and 8, CL = 100pF, S1 closed |
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0.2 |
1.5 |
µs |
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(MAX1480A only) |
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Driver Disable Time from Low |
tLZ |
Figures 6 and 8, CL = 15pF, S1 closed |
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0.2 |
1.5 |
µs |
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(MAX1480A only) |
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Driver Disable Time from High |
tHZ |
Figures 6 and 8, CL = 15pF, S2 closed |
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0.2 |
1.5 |
µs |
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(MAX1480A only) |
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Receiver Input to Output |
tPLH |
Figures 5 and 10, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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100 |
225 |
ns |
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Propagation Delay |
tPHL |
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100 |
225 |
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ItPLH - tPHLI Differential |
tSKD |
Figures 5 and 10, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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20 |
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ns |
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Receiver Skew |
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MAX1490A/B MAX1480A/B/C,
_______________________________________________________________________________________ 3
MAX1480A/B/C, MAX1490A/B
Complete, Isolated RS-485/RS-422
Data Interface
SWITCHING CHARACTERISTICS—MAX1480B/MAX1480C/MAX1490B
(VCC_ = 5V ±10%, FS = VCC_, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC_ = 5V and TA = +25°C.)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
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Maximum Data Rate |
fMAX |
tPLH, tPHL < 50% of data period |
2.5 |
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Mbps |
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Time to Shutdown |
tSHDN |
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100 |
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µs |
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Shutdown to Driver Output High |
tZH(SHDN) |
Figures 6 and 9, CL = 100pF, S2 closed |
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3 |
10 |
µs |
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Shutdown to Driver Output Low |
tZL(SHDN) |
Figures 6 and 9, CL = 100pF, S1 closed |
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3 |
10 |
µs |
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Driver Input to Output |
tPLH |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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1.0 |
2.0 |
µs |
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Propagation Delay |
tPHL |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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1.0 |
2.0 |
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Driver Output Skew |
tSKEW |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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100 |
800 |
ns |
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Driver Rise or Fall Time |
tR, tF |
Figures 5 and 7, RDIFF = 54Ω , CL1 = CL2 = 100pF |
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1.0 |
2.0 |
µs |
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Driver Enable to Output High |
tZH |
Figures 6 and 8, CL = 100pF, S2 closed |
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35 |
100 |
µs |
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(MAX1480B only) |
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Driver Enable to Output Low |
tZL |
Figures 6 and 8, CL = 100pF, S1 closed |
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35 |
100 |
µs |
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(MAX1480B only) |
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Driver Disable Time from Low |
tLZ |
Figures 6 and 8, CL = 15pF, S1 closed |
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13 |
50 |
µs |
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(MAX1480B only) |
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Driver Disable Time from High |
tHZ |
Figures 6 and 8, CL = 15pF, S2 closed |
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13 |
50 |
µs |
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(MAX1480B only) |
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Driver Enable to Output High |
tZH |
Figures 6 and 8, CL = 100pF, S2 closed |
|
0.5 |
4.5 |
µs |
|
(MAX1480C only) |
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Driver Enable to Output Low |
tZL |
Figures 6 and 8, CL = 100pF, S1 closed |
|
0.5 |
4.5 |
µs |
|
(MAX1480C only) |
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Driver Disable Time from Low |
tLZ |
Figures 6 and 8, CL = 15pF, S1 closed |
|
2.0 |
4.5 |
µs |
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(MAX1480C only) |
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Driver Disable Time from High |
tHZ |
Figures 6 and 8, CL = 15pF, S2 closed |
|
2.0 |
4.5 |
µs |
|
(MAX1480C only) |
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Receiver Input to Output |
tPLH |
Figures 5 and 10, RDIFF = 54Ω , CL1 = CL2 = 100pF |
|
0.8 |
2.0 |
µs |
|
Propagation Delay |
tPHL |
|
0.8 |
2.0 |
|
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|||||||
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||||
ItPLH - tPHLI Differential |
tSKD |
Figures 5 and 10, RDIFF = 54Ω , CL1 = CL2 = 100pF |
|
200 |
|
ns |
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Receiver Skew |
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Maximum Data Rate |
fMAX |
tPLH, tPHL < 50% of data period |
0.25 |
|
|
Mbps |
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Time to Shutdown |
tSHDN |
|
|
100 |
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µs |
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Shutdown to Driver Output High |
tZH(SHDN) |
Figures 6 and 9, CL = 100pF, S2 closed |
|
35 |
100 |
µs |
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Shutdown to Driver Output Low |
tZL(SHDN) |
Figures 6 and 9, CL = 100pF, S1 closed |
|
35 |
100 |
µs |
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|
Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to logicside ground (GND_), unless otherwise specified.
Note 2: For DE´ and DI´ pin descriptions, see Detailed Block Diagram and Typical Application Circuit (Figure 1 for MAX1480A/ MAX1480B/MAX1480C, Figure 2 for MAX1490A/MAX1490B).
Note 3: Shutdown supply current is the current at VCC1 and VCC2 when shutdown is enabled.
Note 4: Applies to peak current (see Typical Operating Characteristics). Although the MAX1480A/B/C and MAX1490A/B provide electrical isolation between logic ground and signal paths, they do not provide isolation between external shields and the signal paths (see Isolated Common Connection section).
4 _______________________________________________________________________________________
Complete, Isolated RS-485/RS-422
Data Interface
__________________________________________Typical Operating Characteristics
(VCC_ = 5V, FS = VCC_, TA = +25°C, unless otherwise noted.)
|
|
OUTPUT CURRENT vs. |
|
|
|
OUTPUT CURRENT vs. |
|
|
|
RECEIVER OUTPUT HIGH VOLTAGE |
|||||
|
|
RECEIVER OUTPUT LOW VOLTAGE |
|
|
|
RECEIVER OUTPUT HIGH VOLTAGE |
|
|
|
|
vs. TEMPERATURE |
|
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||
|
80 |
MEASURED AT ISO RO DRV |
MAX1480/90A/B-01 |
|
-30 |
MEASURED AT ISO RO DRV |
MAX1480/90A/B-02 |
|
5.00 |
MEASURED AT ISO RO DRV |
|
|
MAX1480/90A/B-03 |
||
(mA)CURRENTOUTPUT |
|
(mA)CURRENTOUTPUT |
|
(V)VOLTAGEHIGHOUTPUT |
|
|
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||||||||
70 |
|
-25 |
|
4.75 |
IRO = 8mA |
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60 |
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4.50 |
|
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50 |
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-20 |
|
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4.25 |
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|
40 |
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-15 |
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4.00 |
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30 |
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-10 |
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3.75 |
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20 |
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3.50 |
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10 |
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-5 |
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3.25 |
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||
|
0 |
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0 |
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3.00 |
|
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0 |
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 |
|
0 |
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 |
|
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
||
|
|
OUTPUT LOW VOLTAGE (V) |
|
|
|
OUTPUT HIGH VOLTAGE (V) |
|
|
|
|
TEMPERATURE (°C) |
|
|
RECEIVER OUTPUT LOW VOLTAGE |
OUTPUT CURRENT vs. |
OUTPUT CURRENT vs. |
vs. TEMPERATURE |
DRIVER OUTPUT LOW VOLTAGE |
DRIVER OUTPUT HIGH VOLTAGE |
|
0.8 |
MEASURED AT ISO RO DRV |
|
|
MAX1480/90A/B-04 |
|
180 |
MAX1480/90A/B-05 |
|
-100 |
MAX1480/90A/B-06 |
||
(V)VOLTAGELOWOUTPUT |
|
|
|
(mA)CURRENTOUTPUT |
|
(mA)CURRENTOUTPUT |
|
||||||
0.7 |
IRO = 8mA |
|
|
|
|
160 |
-90 |
||||||
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||||
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||
|
0.6 |
|
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|
140 |
|
|
-80 |
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||
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-70 |
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120 |
|
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0.5 |
|
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-60 |
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||
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100 |
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0.4 |
|
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|
-50 |
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80 |
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||
|
0.3 |
|
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-40 |
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60 |
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-30 |
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0.2 |
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40 |
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|
-20 |
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||
|
0.1 |
|
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20 |
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-10 |
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||
|
0 |
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0 |
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0 |
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|
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
|
|
0 1 2 3 4 5 6 7 8 9 10 11 12 |
|
|
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 |
|
|
|
TEMPERATURE (°C) |
|
|
|
|
OUTPUT LOW VOLTAGE (V) |
|
|
OUTPUT HIGH VOLTAGE (V) |
DRIVER OUTPUT CURRENT |
DRIVER DIFFERENTIAL OUTPUT VOLTAGE |
MAX1480B/MAX1480C/MAX1490B |
vs. DIFFERENTIAL OUTPUT VOLTAGE |
vs. TEMPERATURE |
SHUTDOWN CURRENT vs. TEMPERATURE |
|
80 |
DI´ = HIGH OR OPEN |
MAX1480/90A/B-07 |
|
3.0 |
DI´ = HIGH OR OPEN |
|
|
MAX1480/90A/B-08 |
|
0.40 |
SD = VCC_, DI´ = VCC_ |
|
|
MAX1480/90A/B-09 |
||||
(mA)CURRENTOUTPUT |
|
(V)VOLTAGEOUTPUTDIFFERENTIAL |
2.9 |
|
|
A)(CURRENTSHUTDOWNμ |
|
|
|
||||||||||
70 |
|
RL = 54Ω |
|
|
|
|
0.35 |
DE´ (MAX1480B/C ONLY) = VCC_ |
|
||||||||||
|
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||||||||
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2.8 |
|
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|||||||
|
60 |
|
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|
|
0.30 |
MEASURED AT VCC1 AND VCC2 |
|
|
||||
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2.7 |
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50 |
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2.6 |
|
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0.25 |
|
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|
40 |
|
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|
2.5 |
|
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|
0.20 |
|
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|
30 |
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2.4 |
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0.15 |
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2.3 |
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||
|
20 |
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0.10 |
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2.2 |
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10 |
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2.1 |
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0.05 |
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0 |
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2.0 |
|
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0 |
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|
0 |
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 |
|
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
|
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
|
|
|
DIFFERENTIAL OUTPUT VOLTAGE (V) |
|
|
|
|
TEMPERATURE (°C) |
|
|
|
|
|
TEMPERATURE (°C) |
|
|
MAX1490A/B MAX1480A/B/C,
_______________________________________________________________________________________ 5
MAX1480A/B/C, MAX1490A/B
Complete, Isolated RS-485/RS-422
Data Interface
_____________________________Typical Operating Characteristics (continued)
(VCC_ = 5V, FS = VCC_, TA = +25°C, unless otherwise noted.)
|
|
|
|
|
|
|
|
MAX1480A |
|
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|
|
MAX1480B |
|
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|
|
MAX1480C |
|
|
|
|
|
|||||||||
|
|
SUPPLY CURRENT vs. TEMPERATURE |
|
|
|
|
SUPPLY CURRENT vs. TEMPERATURE |
|
|
120 |
SUPPLY CURRENT vs. TEMPERATURE |
|
||||||||||||||||||||||||||||||||||
|
160 |
|
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140 |
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|
|
MAX1480/90A/B-11 |
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|
MAX1480/90A/B-12 |
|
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|
RL = |
54Ω |
MAX1480/90A/B-10 |
|
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V |
CC = |
5.5V |
|
RL |
= 54 |
Ω |
|
||||||
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110 |
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||||||||||
(mA) |
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V |
CC = 4.5V |
|
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(mA) |
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(mA) |
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|
V |
CC = 4.5V |
|
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||||||||
|
140 |
|
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|
V |
CC = 5.5V |
|
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|
120 |
|
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|
VCC |
= 5.5V |
|
|
RL |
= 54Ω |
|
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|
V |
CC = 5.0V |
|
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||||||
|
120 |
|
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|
V |
CC = 5.0V |
|
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VCC |
= 5.0V |
|
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100 |
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|
||||
CURRENT |
|
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CURRENT |
100 |
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CURRENT |
90 |
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||||
100 |
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VCC |
= 4.5V |
|
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||||||
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80 |
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|||||||
|
|
DE |
´ = |
VCC |
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|||||
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|
RL = ∞ |
|
|
80 |
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DE |
´ = |
VCC |
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|||||||||
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70 |
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|||||||||
SUPPLY |
80 |
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SUPPLY |
|
DE´ = |
VCC |
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SUPPLY |
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||||||||
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||||||
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V |
CC = 5.5V |
|
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50 |
|
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|
RL |
= ∞ |
|
||||||
|
60 |
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60 |
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60 |
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VCC |
= 5.5V |
|
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|
40 |
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VCC = 5.0V |
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RL = ∞ |
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VCC = |
5.0V |
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|||||
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VCC |
= 5.5V |
VCC = 4.5V |
VCC |
= 5.0V |
|
|
40 |
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40 |
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|||||||||||||||||||||||
|
20 |
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||||||||||||||
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30 |
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VCC = |
4.5V |
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VCC |
= |
4.5V |
|
|||||
|
0 |
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20 |
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20 |
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|
-40 |
-20 |
|
0 |
20 |
|
40 |
|
60 80 |
|
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|
-40 -20 |
0 |
20 40 |
|
60 80 |
|
|
-40 |
-20 |
0 |
20 40 |
60 80 |
|
|||||||||||||||||||||
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TEMPERATURE (°C) |
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TEMPERATURE (°C) |
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TEMPERATURE (°C) |
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|
MAX1490A |
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MAX1490B |
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|||||||
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|
SUPPLY CURRENT vs. TEMPERATURE |
|
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|
SUPPLY CURRENT vs. TEMPERATURE |
||||||||||||||||||||||||
|
200 |
|
|
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|
MAX1480/90A/B-13 |
|
150 |
|
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|
MAX1480/90A/B-14 |
|
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|
VCC = |
5.5V |
|
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RL = |
54 |
Ω |
|
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|
V |
CC = 5.5V |
|
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||||
(mA) |
|
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(mA) |
140 |
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||||||||||
|
180 |
|
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V |
CC = 5.0V |
|
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|||
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130 |
|
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|||
|
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VCC = |
5.0V |
|
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|||||||
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|
V |
CC = 4.5V |
|
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|||
|
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120 |
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||||
|
160 |
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|||
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RL = |
54 |
Ω |
|
||
CURRENT |
|
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|
|
VCC = |
4.5V |
|
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CURRENT |
110 |
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||||
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||||||||
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|||
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|
SUPPLY |
140 |
|
|
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|
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SUPPLY |
100 |
|
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|
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VCC |
|
|
|
|
|
|
|
|
|
|
|
|
|
VCC |
|
|
VCC = 5.5V |
|
|
RL |
|
|
|
|||||
120 |
|
|
= |
5.0V |
|
|
|
|
|
|
|
|
|
80 |
|
|
= 5.0V |
|
|
= ∞ |
|
|||||||||
|
|
|
|
|
|
|
VCC |
= |
5.5V |
|
|
RL |
= ∞ |
|
|
|
90 |
|
|
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|
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|
|
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|
|
100 |
|
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|
70 |
|
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||
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||
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||
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|
60 |
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
V |
CC = |
4.5V |
|
|
|
|
|
|
|
|
|
|
|
VCC = |
4.5V |
|
|
|
||||
|
80 |
|
|
|
|
|
|
|
|
|
|
|
50 |
|
|
|
|
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
-40 |
-20 |
0 |
20 |
40 |
|
60 80 |
|
|
-40 |
-20 |
0 |
20 40 |
|
60 80 |
|
||||||||||||||
|
|
|
|
|
TEMPERATURE (°C) |
|
|
|
|
|
|
|
|
|
|
TEMPERATURE (°C) |
|
|
|
|
|
DRIVER DISABLE TIME (μs)
DRIVER DISABLE TIME vs. TEMPERATURE
100
MAX1480B
10
MAX1480C
1RL = 54Ω
VDI´ = 0V MEASURED FROM DE´ TO VALID OUTPUT
MAX1480A
0.1
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
TEMPERATURE (°C)
MAX1480/90A/B-15a
DRIVER ENABLE TIME (μs)
DRIVER ENABLE TIME vs. TEMPERATURE
100
MAX1480B
10
RL = 54Ω
VDI´ = 0V MEASURED FROM
DE´ TO VALID OUTPUT
1
MAX1480C
MAX1480A
0.1
-40 |
-20 |
0 |
20 |
40 |
60 |
80 |
TEMPERATURE (°C)
MAX1480/90A/B-15b
6 _______________________________________________________________________________________