DATASHEET
ISL83080E/82E/83E/84E/85E/86E/88E
±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers
The ISL8308xE are BiCMOS, ESD protected, 5V powered,
single transceivers that meet both the RS-485 and RS-422
standards for balanced communication. Each driver output,
and receiver input, is protected against ±15kV ESD strikes
without latch-up, and unlike competitive products, this Intersil
family is specified for 10% tolerance supplies (4.5V to 5.5V).
These devices have very low bus currents (+125µA/-75µA),
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. Data for all
meters is then read out from the concentrator via a single
access port, or a wireless link.
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.
The ISL83080E, ISL83082E, ISL83083E, ISL83084E,
ISL83085E 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.
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state until the power supply has
stabilized, and the Tx outputs are fully short circuit protected.
The ISL83080E, ISL83083E, ISL83084E, ISL83086E 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 Ld packages.
FN6085
Rev 10.00
February 15, 2016
Features
• Pb-Free Available (RoHS Compliant)
• RS-485 I/O Pin ESD Protection . . . . . . . . . . ±15kV HBM
Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV
• Tiny MSOP Packages Save 50% Board Space
• Full Fail-Safe (Open, Short, Terminated and Floating)
Receivers
• Hot Plug Circuitry (ISL83080E, ISL83082E, ISL83083E,
ISL83085E)
- Tx and Rx Outputs Remain Three-state During
Power-up/Power-down
• True 1/8 Unit Load Allows up to 256 Devices on the Bus
• Specified for Single 5V, 10% Tolerance, Supplies
• High Data Rates . . . . . . . . . . . . . . . . . . . . . up to 10Mbps
• Low Quiescent Supply Current . . . . . . . . . . . . . . . 530µA
Ultra Low Shutdown Supply Current . . . . . . . . . . . . 70nA
• -7V to +12V Common Mode Input Voltage Range
• Half and Full Duplex Pinouts
• Three-State Rx and Tx Outputs (Except ISL83084E)
• Current Limiting and Thermal Shutdown for driver
Overload Protection
Applications
• Automated Utility Meter Reading Systems
• High Node Count Systems
• Factory Automation
• Field Bus Networks
• Security Camera Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
FN6085 Rev 10.00
February 15, 2016
Page 1 of 21
ISL83080E/82E/83E/84E/85E/86E/88E
Ordering Information
PART NUMBER (Note 1)
ISL83080EIBZ (Note 2)
ISL83080EIUZ (Note 2)
ISL83082EIBZ (Note 2)
ISL83082EIUZ (Note 2)
ISL83083EIBZ (Note 2)
ISL83083EIUZ (Note 2)
ISL83084EIBZ (Note 2)
(No longer available or
supported, Recommended
Replacements ISL83080EIBZ
or ISL83088EIBZ)
ISL83085EIBZ (Note 2)
ISL83085EIUZ (Note 2)
ISL83086EIBZ (Note 2)
ISL83086EIUZ (Note 2)
ISL83088EIBZ (Note 2)
ISL83088EIUZ (Note 2)
NOTES:
1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is 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.
PART MARKING
83080EIBZ
3080Z
83082 EIBZ
3082Z
83083EIBZ
3083Z
83084 EIBZ
TEMP. RANGE (°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
(RoHS Compliant)
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
8 Ld MSOP
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
PKG. DWG. #
M14.15
M10.118
M8.15
M8.118
M14.15
M10.118
M8.15
83085 EIBZ
3085Z
83086EIBZ
3086Z
83088 EIBZ
3088Z
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
8 Ld SOIC
8 Ld MSOP
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
8 Ld MSOP
M8.15
M8.118
M14.15
M10.118
M8.15
M8.118
Truth Tables
TRANSMITTING
INPUTS
RE
X
X
0
1
DE
1
1
0
0
DI
1
0
X
X
Z
0
1
High-Z
High-Z *
OUTPUTS
Y
1
0
High-Z
High-Z*
0
0
0
1
1
RE
RECEIVING
INPUTS
DE
DE
Half Duplex Full Duplex
0
0
0
0
1
X
X
X
0
1
A-B
-0.05V
-0.2V
Inputs
Open/Shorted
X
X
OUTPUT
RO
1
0
1
High-Z*
High-Z
NOTE: *Shutdown Mode (See Notes 10 and 13).
NOTE: *Shutdown Mode (See Notes 10 and 13).
Pin Descriptions
PIN
RO
RE
DE
FUNCTION
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 shorted.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is
low.
FN6085 Rev 10.00
February 15, 2016
Page 3 of 21
ISL83080E/82E/83E/84E/85E/86E/88E
Pin Descriptions
(Continued)
PIN
DI
GND
A/Y
B/Z
A
B
Y
Z
V
CC
NC
FUNCTION
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.
Ground connection.
±15kV HBM ESD Protected RS-485/RS-422 level, noninverting receiver input and noninverting driver output. Pin is an input
if DE = 0; pin is an output if DE = 1.
±15kV HBM ESD Protected RS-485/RS-422 level, Inverting receiver input and inverting driver output. Pin is an input if DE
= 0; pin is an output if DE = 1.
±15kV HBM ESD Protected RS-485/RS-422 level, noninverting receiver input.
±15kV HBM ESD Protected RS-485/RS-422 level, inverting receiver input.
±15kV HBM ESD Protected RS-485/RS-422 level, noninverting driver output.
±15kV HBM ESD Protected RS-485/RS-422 level, inverting driver output.
System power supply input (4.5V to 5.5V).
No Connection.
Typical Operating Circuit
ISL83082E, ISL83085E, ISL83088E
+5V
+
8
V
CC
1 RO
2 RE
3 DE
4 DI
D
GND
5
GND
5
R
B/Z
A/Y
7
6
R
T
R
T
7
6
B/Z
A/Y
R
0.1µF
0.1µF
+
8
V
CC
D
DI 4
DE 3
RE 2
RO 1
+5V
FN6085 Rev 10.00
February 15, 2016
Page 4 of 21
51mcu
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