intersil ISL3170E DATA SHEET
查询ISL3178EIBZ供应商
®
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E,
ISL3175E, ISL3176E, ISL3177E, ISL3178E
Data Sheet August 28, 2006
±
15kV ESD Protected, 3.3V, Full Fail-safe,
Low Power, High Speed or Slew Rate
Limited, RS-485/RS-422 Transceivers
The Intersil ISL317XE are ±15kV IEC61000 ESD Protected,
3.3V powered, single transceivers that meet both the
RS-485 and RS-422 standards for balanced communication.
These devices have very low bus currents (+125μA/-100μA),
so they present a true “1/8 unit load” to the RS-485 bus. This
allows up to 256 transceivers on the network without violating
the RS-485 specification’s 32 unit load maximum, and without
using repeaters. For example, in a remote utility meter reading
system, individual meter readings are routed to a concentrator
via an RS-485 network, so the high allowed node count
minimizes the number of repeaters required.
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or terminated but undriven.
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state while the power supply stabilizes.
The ISL3170E through ISL3175E utilize slew rate limited
drivers which reduce EMI, and minimize reflections from
improperly terminated transmission lines, or unterminated
stubs in multidrop and multipoint applications. Slew rate limited
versions also include receiver input filtering to enhance noise
immunity in the presence of slow input signals.
The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E,
ISL3177E are configured for full duplex (separate Rx input
and Tx output pins) applications. The half duplex versions
multiplex the Rx inputs and Tx outputs to allow transceivers
with output disable functions in 8 lead packages.
Features
• IEC61000 ESD Protection on RS-485 I/O Pins . . . . . ±15kV
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
• Pb-Free Plus Anneal Available (RoHS Compliant)
• Full Fail-safe (Open, Short, Terminated/Floating)
Receivers
• Hot Plug - Tx and Rx Outputs Remain Three-state During
Power-up
• True 1/8 Unit Load Allows up to 256 Devices on the Bus
• Single 3.3V Supply
• High Data Rates. . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low Quiescent Supply Current . . . . . . . . . . .800
- Ultra Low Shutdown Supply Current . . . . . . . . . . .10nA
• -7V to +12V Common Mode Input/Output Voltage Range
• Half and Full Duplex Pinouts
• Three State Rx and Tx Outputs Available
• Current Limiting and Thermal Shutdown for driver
Overload Protection
• Tiny MSOP Packages Consume 50% Less Board Space
Applications
• Automated Utility Meter Reading Systems
• High Node Count Systems
• Field Bus Networks
• Security Camera Networks
FN6307.2
μA (Max)
• Building Environmental Control/ Lighting Systems
• Industrial/Process Control Networks
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ISL3170E FULL 0.25 YES YES 256 YES 510 YES 10, 14
ISL3171E FULL 0.25 YES YES 256 NO 510 NO 8
ISL3172E HALF 0.25 YES YES 256 YES 510 YES 8
ISL3173E FULL 0.5 YES YES 256 YES 510 YES 10, 14
ISL3174E FULL 0.5 YES YES 256 NO 510 NO 8
ISL3175E HALF 0.5 YES YES 256 YES 510 YES 8
ISL3176E FULL 20 NO YES 256 YES 510 YES 10, 14
ISL3177E FULL 20 NO YES 256 NO 510 NO 8
ISL3178E HALF 20 NO YES 256 YES 510 YES 8
HALF/FULL
DUPLEX
DATA RATE
(Mbps)
SLEW-RATE
LIMITED?
HOT
PLUG?
# DEVICES
ON BUS
RX/TX
ENABLE?
QUIESCENT
I
(μA)
CC
LOW POWER
SHUTDOWN?
COUNT
PIN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Pinouts
ISL3172E, ISL3175E, ISL3178E
(MSOP, SOIC)
TOP VIEW
RO
RE
DE
1
R
2
3
D
4
DI
8
V
CC
7
B/Z
6
A/Y
5
GND
ISL3171E, ISL3174E, ISL3177E
(MSOP, SOIC)
TOP VIEW
V
CC
RO
GND
1
R
2
3
DI
D
4
8
A
7
B
6
Z
5
Y
ISL3170E, ISL3173E, ISL3176E
(MSOP)
TOP VIEW
RO
RE
DE
GND
1
R
2
3
DI
D
4
5
10
V
CC
A
9
B
8
Z
7
Y
6
ISL3170E, ISL3173E, ISL3176E
(SOIC)
TOP VIEW
NC
RO
RE
DE
GND
GND
1
2
R
3
4
DI
5
D
6
7
14
V
CC
NC
13
A
12
B
11
Z
10
9
Y
8
NC
Ordering Information(Notes 1, 2)
PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. #
ISL3170EIBZ 3170EIBZ -40 to +85 14 Ld SOIC M14.15
ISL3170EIUZ 3170Z -40 to +85 10 Ld MSOP M10.118
ISL3171EIBZ 3171EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3171EIUZ 3171Z -40 to +85 8 Ld MSOP M8.118
ISL3172EIBZ 3172EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3172EIUZ 3172Z -40 to +85 8 Ld MSOP M8.118
ISL3173EIBZ 3173EIBZ -40 to +85 14 Ld SOIC M14.15
ISL3173EIUZ 3173Z -40 to +85 10 Ld MSOP M10.118
ISL3174EIBZ 3174EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3174EIUZ 3174Z -40 to +85 8 Ld MSOP M8.118
ISL3175EIBZ 3175EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3175EIUZ 3175Z -40 to +85 8 Ld MSOP M8.118
ISL3176EIBZ 3176EIBZ -40 to +85 14 Ld SOIC M14.15
ISL3176EIUZ 3176Z -40 to +85 10 Ld MSOP M10.118
ISL3177EIBZ 3177EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3177EIUZ 3177Z -40 to +85 8 Ld MSOP M8.118
ISL3178EIBZ 3178EIBZ -40 to +85 8 Ld SOIC M8.15
ISL3178EIUZ 3178Z -40 to +85 8 Ld MSOP M8.118
NOTES:
1. Units also available in Tape and Reel; Add “-T” to suffix.
2. Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2
FN6307.2
August 28, 2006
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Truth Ta bles
TRANSMITTING
INPUTS OUTPUTS
RE
X1101
X1010
0 0 X High-Z High-Z
1 0 X High-Z * High-Z *
NOTE: *Shutdown Mode (See Note 9), except for ISL3171E,
ISL3174E, ISL3177E
DE DI Z Y
RE
00 X≥ -0.05V 1
00 X≤ -0.2V 0
0 0 X Inputs
1 0 0 X High-Z *
1 1 1 X High-Z
NOTE: *Shutdown Mode (See Note 9), except for ISL3171E,
ISL3174E, ISL3177E
DE
Half DuplexDEFull Duplex
RECEIVING
INPUTS OUTPUT
A-B RO
1
Open/Shorted
Pin Descriptions
PIN FUNCTION
RO Receiver output: If A-B ≥ -50mV, RO is high; If A-B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating ) or sho rted.
RE
DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and are high impedance when DE is low. If the
DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.
GND Ground connection.
A/Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input if
B/Z ±15kV IEC61000 ESD Protected RS-485/422 level, Inverting receiver input and inverting driver output. Pin is an input if DE = 0;
V
NC No Connection.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function isn’t used,
connect RE
Tx enable function isn’t used, connect DE to V
DE = 0; pin is an output if DE = 1.
pin is an output if DE = 1.
A ±15kV
B ±15kV
Y ±15kV
Z ±15kV
System power supply input (3.0V to 3.6V).
CC
directly to GND or through a 1kΩ to 3kΩ resistor to GND.
through a 1kΩ to 3kΩ resistor.
CC
IEC61000 ESD Protected RS-485/422 level, noninverting receiver input.
IEC61000 ESD Protected RS-485/422 level, inverting receiver input.
IEC61000 ESD Protected RS-485/422 level, noninverting driver output.
IEC61000 ESD Protected RS-485/422 level, inverting driver output.
3
FN6307.2
August 28, 2006
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Typical Operating Circuits
ISL3172E, ISL3175E, ISL3178E
+3.3V
+
8
V
RO
1
2
RE
3
DE
DI
4
CC
R
B/Z
A/Y
D
GND
5
0.1μF
R
T
7
6
0.1μF
R
T
+
ISL3171E, ISL3174E, ISL3177E
+3.3V
+
1
V
CC
RO
2
R
0.1μF
A
B
R
8
T
7
0.1μF
+3.3V
8
V
CC
7
B/Z
6
A/Y
R
GND
5
+3.3V
+
1
V
CC
Y
5
Z
6
4
DI
D
3
DE
2
RE
1
RO
3
DI
D
6
GND
Z
5
Y
4
DI
3
D
R
T
B
7
R
A
8
GND
4
RO
2
ISL3170E, ISL3173E, ISL3176E
+3.3V
+
14
V
2
RO
3
RE
4
DE
5
DI
CC
R
D
GND
6, 7
0.1μF
R
12
A
B
Z
Y
T
11
10
9
(PIN NUMBERS FOR SOIC)
0.1μF
R
T
+3.3V3
+
14
V
CC
Y
9
Z
10
B
11
A
12
GND
6, 7
DI
5
D
4
DE
3
RE
RO
R
2
4
FN6307.2
August 28, 2006
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Absolute Maximum Ratings Thermal Information
VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input Voltages
DI, DE, RE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
Input/Output Voltages
A, B, Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +13V
RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V
CC
+0.3V)
Short Circuit Duration
Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table
Thermal Resistance (Typical, Note 3)
8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . +105
8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . +140
10 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . +190
14 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . +128
Maximum Junction Temperature (Plastic Package) . . . . . . +150°C
Maximum Storage Temperature Range. . . . . . . . . .-65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . +300°C
(Lead Tips Only)
Operating Conditions
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
3. θ
JA
θ
JA
(°C/W)
Electrical Specifications Test Conditions: V
Note 4
PARAMETER SYMBOL TEST CONDITIONS
DC CHARACTERISTICS
Driver Differential V
OUT
Change in Magnitude of Driver
Differential V
OUT
for
Complementary Output States
Driver Common-Mode V
OUT
Change in Magnitude of Driver
Common-Mode V
OUT
for
Complementary Output States
Logic Input High Voltage V
Logic Input Low Voltage V
Logic Input Hysteresis V
Logic Input Current I
Input Current (A, B, A/Y, B/Z) I
Output Leakage Current (Y , Z) (Full
Duplex Versions Only, Note 12)
Output Leakage Current (Y, Z)
in Shutdown Mode (Full Duplex,
Note 12)
Driver Short-Circuit Current,
= High or Low
V
O
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis ΔV
Receiver Output High Voltage V
V
OD
ΔV
V
OC
ΔV
HYS
IN1
IN2
I
IN3
I
IN4
I
OSD1
V
TH
OH
RL = 100Ω (RS-422) (Figure 1A, Note 15) Full 2 2.3 - V
R
No Load - - V
RL = 60Ω, -7V ≤ VCM ≤ 12V (Figure 1B) Full 1.5 2.2 - V
RL = 54Ω or 100Ω (Figure 1A) Full - 0.01 0.2 V
OD
RL = 54Ω or 100Ω (Figure 1A) Full - 2 3 V
RL = 54Ω or 100Ω (Figure 1A) Full - 0.01 0.2 V
OC
DI, DE, RE Full 2 - - V
IH
DI, DE, RE Full - - 0.8 V
IL
DE, RE (Note 14) 25 - 100 - mV
DI = DE = RE = 0V or VCC (Note 17) Full -2 - 2 μA
DE = 0V, VCC = 0V or
3.6V
RE = 0V, DE = 0V,
V
RE = VCC, DE = 0V,
V
DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 6) Full - - ±250 mA
-7V ≤ VCM ≤ 12V Full -200 -125 -50 mV
VCM = 0V 25 - 15 - mV
TH
IO = -4mA, VID = -50mV Full VCC - 0.6 - - V
= 3.0V to 3.6V; Unless Otherwise Specified. Typicals are at VCC = 3.3V, TA = +25°C,
CC
TEMP
(°C) MIN TYP MAX UNITS
= 54Ω (RS-485) (Figure 1A) Full 1.5 2 V
L
VIN = 12V Full - 80 125 μA
= -7V Full -100 -50 - μA
V
IN
= 12V Full - 10 40 μA
V
= 0V or 3.6V
CC
= 0V or 3.6V
CC
IN
= -7V Full -40 -10 - μA
V
IN
= 12V Full - 10 40 μA
V
IN
V
= -7V Full -40 -10 - μA
IN
CC
CC
V
5
FN6307.2
August 28, 2006
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Electrical Specifications Test Conditions: V
Note 4 (Continued)
= 3.0V to 3.6V; Unless Otherwise Specified. Typicals are at VCC = 3.3V, TA = +25°C,
CC
TEMP
PARAMETER SYMBOL TEST CONDITIONS
Receiver Output Low Voltage V
Three-State (high impedance)
Receiver Output Current (Note 12)
Receiver Input Resistance R
Receiver Short-Circuit Current I
Thermal Shutdown Threshold T
OL
I
OZR
OSR
SD
IO = -4mA, VID = -200mV Full - 0.17 0.4 V
0.4V ≤ VO ≤ 2.4V Full -1 0.015 1 μA
-7V ≤ VCM ≤ 12V Full 96 150 - kΩ
IN
0V ≤ VO ≤ V
CC
(°C) MIN TYP MAX UNITS
Full ±730±60 mA
Full - 150 - °C
SUPPLY CURRENT
No-Load Supply Current (Note 5) I
Shutdown Supply Current
CC
I
SHDN
DI = 0V or V
CC
DE = 0V, RE = VCC, DI = 0V or V
DE = VCC,
RE
= 0V or V
DE = 0V, RE
CC
Full - 510 800 μA
CC
= 0V Full - 480 700 μA
Full - 0.01 12 μA
(Note 12)
ESD PERFORMANCE
RS-485 Pins (A, Y, B, Z, A/Y, B/Z) IEC61000-4-2, Air-Gap Discharge Method 25 - ±15 - kV
IEC61000-4-2, Contact Discharge Method 25 - ±8-kV
Human Body Model, From Bus Pins to GND 25 - ±15 - kV
All Pins HBM, per MIL-STD-883 Method 3015 25 - ±7-kV
MM 25 - 200 - V
DRIVER SWITCHING CHARACTERISTICS (ISL3170E, ISL3171E, ISL3172E, 250kbps)
Maximum Data Rate f
Driver Differential Output Delay t
Driver Differential Output Skew t
Driver Differential Rise or Fall Time t
Driver Enable to Output High t
Driver Enable to Output Low t
Driver Disable from Output High t
Driver Disable from Output Low t
Time to Shutdown t
Driver Enable from Shutdown to
t
ZH(SHDN)RL
Output High
Driver Enable from Shutdown to
Output Low
t
ZL(SHDN)RL
MAX
DD
SKEW
R
ZH
ZL
HZ
LZ
SHDN
VOD = ±1.5V, CD = 820pF (Figure 4, Note 16) Full 250 800 - kbps
R
= 54Ω, CD = 50pF (Figure 2) Full 250 1100 1500 ns
DIFF
R
= 54Ω, CD = 50pF (Figure 2) Full - 6 100 ns
DIFF
, t
R
F
= 54Ω, CD = 50pF (Figure 2) Full 350 960 1600 ns
DIFF
RL = 500Ω, CL = 50pF, SW = GND (Figure 3),
Full - 26 600 ns
(Notes 7, 12)
RL = 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full - 200 600 ns
(Notes 7, 12)
RL = 500Ω, CL = 50pF, SW = GND (Figure 3),
Full - 28 55 ns
(Note 12)
RL = 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full - 30 55 ns
(Note 12)
(Notes 9, 12) Full 50 200 600 ns
= 500Ω, CL = 50pF, SW = GND (Figure 3),
Full - 180 700 ns
(Notes 9, 10, 12)
= 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full - 100 700 ns
(Notes 9, 10, 12)
DRIVER SWITCHING CHARACTERISTICS (ISL3173E, ISL3174E, ISL3175E, 500kbps)
Maximum Data Rate f
Driver Differential Output Delay t
Driver Differential Output Skew t
Driver Differential Rise or Fall Time t
Driver Enable to Output High t
MAX
DD
SKEW
R
ZH
VOD = ±1.5V, CD = 820pF (Figure 4, Note 16) Full 500 1600 - kbps
R
= 54Ω, CD = 50pF (Figure 2) Full 180 350 800 ns
DIFF
R
= 54Ω, CD = 50pF (Figure 2) Full - 1 30 ns
DIFF
, t
R
F
= 54Ω, CD = 50pF (Figure 2) Full 200 380 800 ns
DIFF
RL = 500Ω, CL = 50pF, SW = GND (Figure 3),
Full - 26 350 ns
(Notes 7, 12)
6
FN6307.2
August 28, 2006
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