ISL83080E, ISL83082E, ISL83083E, ISL83084E,
ISL83085E, ISL83086E, ISL83088E
®
Data Sheet
April 22, 2008
FN6085.9
±15kV ESD, 5V, Full Fail-Safe, 1/8 Unit
Features
Load, RS-485/RS-422 Transceivers
• Pb-Free Available (RoHS Compliant)
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).
• 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
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.
• 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
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.
• -7V to +12V Common Mode Input Voltage Range
• Half and Full Duplex Pinouts
• Three-State Rx and Tx Outputs (Except ISL83084E)
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.
• Current Limiting and Thermal Shutdown for driver
Overload Protection
Applications
• Automated Utility Meter Reading Systems
• High Node Count Systems
• Factory Automation
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.
• Field Bus Networks
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.
• Security Camera Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
TABLE 1. SUMMARY OF FEATURES
PART
HALF/FULL DATA RATE SLEW-RATE
#DEVICES
Rx/Tx
QUIESCENT LOW POWER
PIN
NUMBER
DUPLEX
(Mbps)
0.115
0.115
0.5
LIMITED?
HOT PLUG ON BUS
ENABLE?
I
(µA) SHUTDOWN? COUNT
CC
530
ISL83080E
ISL83082E
ISL83083E
ISL83084E
ISL83085E
ISL83086E
ISL83088E
Full
Yes
Yes
Yes
Yes
No
256
256
256
256
256
256
256
Yes
Yes
Yes
No
Yes
Yes
Yes
No
10, 14
Half
Yes
530
530
530
530
530
530
8
Full
Yes
10, 14
Full
0.5
Yes
8
Half
0.5
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
8
10, 14
8
Full
10
No
Half
10
No
No
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.
Copyright © Intersil Americas Inc. 2004-2005, 2008. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
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