General Description
The MAX3030E–MAX3033E family of quad RS-422
transmitters send digital data transmission signals over
twisted-pair balanced lines in accordance with TIA/EIA422-B and ITU-T V.11 standards. All transmitter outputs
are protected to ±15kV using the Human Body Model.
The MAX3030E–MAX3033E are available with either a
2Mbps or 20Mbps guaranteed baud rate. The 2Mbps
baud rate transmitters feature slew-rate-limiting to minimize EMI and reduce reflections caused by improperly
terminated cables.
The 20Mbps baud rate transmitters feature low-static
current consumption (ICC< 100µA), making them ideal
for battery-powered and power-conscious applications.
They have a maximum propagation delay of 16ns and a
part-to-part skew less than 5ns, making these devices
ideal for driving parallel data. The MAX3030E–
MAX3033E feature hot-swap capability that eliminates
false transitions on the data cable during power-up or
hot insertion.
The MAX3030E–MAX3033E are low-power, ESD-protected, pin-compatible upgrades to the industry-standard 26LS31 and SN75174. They are available in
space-saving 16-pin TSSOP and SO packages.
Applications
Telecom Backplanes
V.11/X.21 Interface
Industrial PLCs
Motor Control
Features
♦ Meet TIA/EIA-422-B (RS-422) and ITU-T V.11
Recommendation
♦ ±15kV ESD Protection on Tx Outputs
♦ Hot-Swap Functionality
♦ Guaranteed 20Mbps Data Rate (MAX3030E,
MAX3032E)
♦ Slew-Rate-Controlled 2Mbps Data Rate
(MAX3031E, MAX3033E)
♦ Available in 16-Pin TSSOP and Narrow SO
Packages
♦ Low-Power Design (<330µW, V
CC
= 3.3V Static)
♦ +3.3V Operation
♦ Industry-Standard Pinout
♦ Thermal Shutdown
MAX3030E–MAX3033E
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-2671; Rev 0; 10/02
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
查询MAX3030E供应商
TOP VIEW
DI1
1
DO1+
2
DO1-
3
MAX3030E/
4
EN
DI2
5
6
7
8
MAX3031E
TSSOP/SO
DO2-
DO2+
GND
DO1+
DO1-
EN1&2
DO2-
DO2+
GND
DI1
DI2
1
2
3
4
5
6
7
8
MAX3032E/
MAX3033E
TSSOP/SO
16
V
CC
DI4
15
DO4+
14
DO4-
13
12
EN
DO3-
11
DO3+
10
DI3
9
PART TEMP RANGE PIN-PACKAGE
MAX3030ECSE 0°C to +70°C 16 SO (Narrow)
MAX3030ECUE 0°C to +70°C 16 TSSOP
MAX3030EESE -40°C to +85°C 16 SO (Narrow)
MAX3030EEUE -40°C to +85°C 16 TSSOP
MAX3031ECSE 0°C to +70°C 16 SO (Narrow)
MAX3031ECUE 0°C to +70°C 16 TSSOP
MAX3031EESE -40°C to +85°C 16 SO (Narrow)
MAX3031EEUE -40°C to +85°C 16 TSSOP
16
V
CC
DI4
15
DO4+
14
DO4-
13
12
EN3&4
DO3-
11
DO3+
10
DI3
9
MAX3032ECSE 0°C to +70°C 16 SO (Narrow)
MAX3032ECUE 0°C to +70°C 16 TSSOP
MAX3032EESE -40°C to +85°C 16 SO (Narrow)
MAX3032EEUE -40°C to +85°C 16 TSSOP
MAX3033ECSE 0°C to +70°C 16 SO (Narrow)
MAX3033ECUE 0°C to +70°C 16 TSSOP
MAX3033EESE -40°C to +85°C 16 SO (Narrow)
MAX3033EEUE -40°C to +85°C 16 TSSOP
MAX3030E–MAX3033E
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(3V ≤ VCC≤ 3.6V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.) (Note 1)
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.
(All Voltages Are Referenced to Device Ground, Unless
Otherwise Noted)
VCC........................................................................................+6V
EN1&2, EN3&4, EN, EN............................................-0.3V to +6V
DI_ ............................................................................-0.3V to +6V
DO_+, DO_- (normal condition) .................-0.3V to (V
CC
+ 0.3V)
DO_+, DO_- (power-off or three-state condition).....-0.3V to +6V
Driver Output Current per Pin.........................................±150mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SO (derate 8.70mW/°C above +70°C)..............696mW
16-Pin TSSOP (derate 9.40mW/°C above +70°C) .......755mW
Operating Temperature Ranges
MAX303_EC_ ......................................................0°C to +70°C
MAX303_EE_ ...................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
DRIVER OUTPUT: DO_+, DO_-
Differential Driver Output
Change in Differential Output
Voltage
Driver Common-Mode Output
Voltage
Change in Common-Mode
Voltage
Three-State Leakage Current I
Output Leakage Current I
Driver Output Short-Circuit
Current
INPUTS: EN, EN, EN1&2, EN3&4
Input High Voltage V
Input Low Voltage V
Input Current I
Hot-Swap Driver Input Current I
SUPPLY CURRENT
Supply Current I
THERMAL PROTECTION
Thermal-Shutdown Threshold T
Thermal-Shutdown Hysteresis 10 °C
ESD Protection DO_ Human Body Model ±15 kV
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
OD1
V
OD2
V
OD3
∆V
V
OC
∆V
OZ
OFF
I
SC
LEAK
HOTSWAP
CC
SH
RL = 100Ω, Figure 1 2.0
RL = ∞, Figure 1 3.6
RL = 3.9kΩ (for compliance with V.11),
Figure 1
RL = 100Ω (Note 2) -0.4 +0.4 V
OD
RL = 100Ω, Figure 1 3 V
RL = 100Ω (Note 2) -0.4 +0.4 V
OC
V
= VCC or GND, driver disabled ±10 µA
OUT
VCC = 0V, V
V
= 0V, VIN = VCC or GND
OUT
(Note 3)
IH
IL
EN, EN, EN1&2, EN3&4 (Note 4) ±200 µA
No load 100 µA
= 3V or 6V 20 µA
OUT
3.6
-150 mA
2.0 V
0.4 V
±2 µA
160 °C
V
MAX3030E–MAX3033E
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
_______________________________________________________________________________________ 3
SWITCHING CHARACTERISTICS—MAX3030E, MAX3032E
(3V ≤ VCC≤ 3.6V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.)
SWITCHING CHARACTERISTICS—MAX3031E, MAX3033E
(3V ≤ VCC≤ 3.6V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.)
Driver Propagation Delay
Low to High
Driver Propagation Delay
High to Low
Differential Transition Time, Low
to High
Differential Transition Time, High
to Low
Differential Skew (Same Channel)
|t
DPLH
Skew Driver to Driver
(Same Device)
Skew Part to Part t
Maximum Data Rate 20 Mbps
Driver Enable to Output High t
Driver Enable to Output Low t
Driver Disable Time from Low t
Driver Disable Time from High t
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
- t
|
DPHL
t
DPLH
RL = 100Ω, CL = 50pF, Figures 2, 3 8 16 ns
t
DPHL
t
R
RL = 100Ω, CL = 50pF (10% to 90%),
t
t
SK1
t
SK2
SK3
DZH
DZL
DLZ
DHZ
Figures 2, 3
F
RL = 100Ω, CL = 50pF, VCC = 3.3V ±2 ns
RL = 100Ω, CL = 50pF, VCC = 3.3V,
MAX
=
+5°C
∆T
S2 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S1 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S1 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S2 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
10 ns
5ns
50 ns
50 ns
50 ns
50 ns
Driver Propagation Delay
Low to High
Driver Propagation Delay
High to Low
Differential Transition Time,
Low to High
Differential Transition Time,
High to Low
Differential Skew (Same Channel)
|t
DPLH
Skew Driver to Driver
(Same Device)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
- t
|
DPHL
t
DPLH
RL = 100Ω, CL = 50pF, Figures 2, 3 40 70 ns
t
DPHL
t
R
RL = 100Ω, CL = 50pF (10% to 90%),
Figures 2, 3
F
RL = 100Ω, CL = 50pF, VCC = 3.3V ±10 ns
t
SK1
t
SK2
t
15 50 ns
MAX3030E–MAX3033E
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
4 _______________________________________________________________________________________
SWITCHING CHARACTERISTICS—MAX3031E, MAX3033E (continued)
(3V ≤ VCC≤ 3.6V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.)
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device
ground, unless otherwise noted.
Note 2: ∆V
OD
and ∆VOCare the changes in VODand VOC, respectively, when DI changes state.
Note 3: Only one output shorted at a time.
Note 4: This input current is for the hot-swap enable (EN_, EN, EN) inputs and is present until the first transition only. After the first
transition, the input reverts to a standard high-impedance CMOS input with input current I
LEAK
.
DIFFERENTIAL OUTPUT VOLTAGE
vs. OUTPUT CURRENT
MAX3030E toc01
OUTPUT CURRENT (mA)
DIFFERENTIAL OUTPUT VOLTAGE (V)
906030
1
2
3
4
0
0 120
TA = 0°C
TA = +25°C
TA = +85°C
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT LOW VOLTAGE
MAX3030E toc02
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
321
50
100
150
200
0
04
OUTPUT CURRENT
vs. TRANSMITTER OUTPUT HIGH VOLTAGE
MAX3030E toc03
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
321
25
50
75
100
125
150
0
04
Typical Operating Characteristics
(VCC= +3.3V and TA= +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Skew Part to Part t
Maximum Data Rate 2 Mbps
Driver Enable to Output High t
Driver Enable to Output Low t
Driver Disable Time from Low t
Driver Disable Time from High t
SK3
DZH
DZL
DLZ
DHZ
RL = 100Ω, CL = 50pF, VCC = 3.3V,
MAX
=
+5°C
∆T
S2 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S1 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S1 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
S2 closed, RL = 500Ω, CL = 50pF,
Figures 4, 5
18 ns
100 ns
100 ns
150 ns
150 ns
MAX3030E–MAX3033E
±15kV ESD-Protected, 3.3V Quad
RS-422 Transmitters
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(VCC= +3.3V and TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
100
DRIVERS ENABLED
80
60
40
SUPPLY CURRENT (µA)
20
0
04
TA = +85°C
TA = +25°C
TA = 0°C
321
SUPPLY VOLTAGE (V)
MAX3030E toc04
MAX3030E/MAX3032E
SUPPLY CURRENT vs. DATA RATE
130
ALL FOUR TRANSMITTERS
LOADED AND SWITCHING
= 100Ω, CL = 200pF
R
vs. SUPPLY VOLTAGE
L
120
110
100
SUPPLY CURRENT (mA)
90
MAX3030E toc07
SUPPLY CURRENT vs. DATA RATE
30
NO RESISTIVE LOAD, CL = 200pF,
ALL FOUR
25
TRANSMITTERS
SWITCHING
20
15
10
SUPPLY CURRENT (mA)
5
0
0.1k 100M
SUPPLY CURRENT vs. DATA RATE
100
ALL FOUR TRANSMITTERS
LOADED AND SWITCHING
= 100Ω, CL = 200pF
R
L
97
94
SUPPLY CURRENT (mA)
91
MAX3030E/MAX3032E
DATA RATE (bps)
MAX3031E/MAX3033E
MAX3031E/MAX3033E
SUPPLY CURRENT vs. DATA RATE
2.5
NO RESISTIVE LOAD, CL = 200pF,
ALL FOUR
TRANSMITTERS
MAX3030E toc05
10M1M100k10k1k
2.0
SWITCHING
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
0.1k 10M
DATA RATE (bps)
1M100k10k1k
MAX3030E
DRIVER PROPAGATION DELAY
(LOW TO HIGH)
MAX3030E toc08
MAX3030E toc09
MAX3030E toc06
DI_
1V/div
DIFFERENTIA
OUTPUT
2V/div
80
0.1k 100M
DATA RATE (bps)
10M1M100k10k1k
MAX3030E
DRIVER PROPAGATION DELAY
(HIGH TO LOW)
10ns/div
MAX3030E toc10
DIFFERENTIAL
OUTPUT
2V/div
DI_
1V/div
88
0.1k 10M
DATA RATE (bps)
1M100k10k1k
MAX3031E
DRIVER PROPAGATION DELAY
(LOW TO HIGH)
20ns/div
MAX3030E toc11
DI_
1V/div
DIFFERENTIAL
OUTPUT
2V/div
10ns/div
MAX3031E
DRIVER PROPAGATION DELAY
(HIGH TO LOW)
20ns/div
MAX3030E toc12
DIFFERENTIA
OUTPUT
2V/div
DI_
1V/div