ISL3179E, ISL3180E
®
Data Sheet
April 22, 2008
FN6365.2
High ESD Protected, +125°C, 40Mbps,
3.3V, Full Fail-Safe, RS-485/RS-422
Transceivers
Features
• High ESD Protection on RS-485 I/O Pins
- ISL3179E . . . . . . . . . . . . . . . . . . . . . ±16.5kV IEC61000
- ISL3180E . . . . . . . . . . . . . . . . . . . . . . . . . . ±12kV HBM
- Class 3 HBM ESD Level on all Other Pins. . . . . . .>9kV
Intersil’s ISL3179E and ISL3180E are high ESD Protected
(see Table 1 below), 3.3V powered, single transceivers that
meet both the RS-485 and RS-422 standards for balanced
communication. Each device has low bus currents
(+220µA/-150µA), so it presents a “1/5 unit load” to the
RS-485 bus. This allows up to 160 transceivers on the
network without violating the RS-485 specification’s 32 unit
load maximum, and without using repeaters.
• Specified for +125°C Operation
• High Data Rates. . . . . . . . . . . . . . . . . . . . . . up to 40Mbps
• 5V Tolerant Logic Inputs
• 1/5 Unit Load Allows up to 160 Devices on the Bus
• Full Fail-Safe (Open, Shorted, Terminated/Undriven)
Receiver
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 - Tx and Rx Outputs Remain Three-State During
Power-Up
The ISL3180E is configured for full duplex applications. The
ISL3179E half duplex version multiplexes the Rx inputs and
Tx outputs to allow a transceiver with an output disable
function in 8 Ld packages.
• Low Quiescent Current . . . . . . . . . . . . . . . . . . 4mA (Max)
• Low Current Shutdown Mode. . . . . . . . . . . . . . 1µA (Max)
• -7V to +12V Common Mode Input Voltage Range
• Three-State Rx and Tx Outputs
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state while the power supply stabilizes.
• 16/16.5ns (Max) Tx/Rx Propagation Delays; 1.5ns (Max)
Skew
Ordering Information
PART
NUMBER
(Note)
TEMP.
RANGE
(°C)
• Operates from a Single +3.3V Supply (10% Tolerance)
PART
MARKING #
PACKAGE
(Pb-Free)
PKG.
DWG. #
• Current Limiting and Thermal Shutdown for driver
Overload Protection
ISL3179EFBZ* 3179 EFBZ
ISL3179EFUZ* 179FZ
ISL3179EFRZ* 79FZ
ISL3179EIBZ* 3179 EIBZ
ISL3179EIUZ* 179IZ
ISL3179EIRZ* 79IZ
-40 to +125 8 Ld SOIC
M8.15
-40 to +125 8 Ld MSOP M8.118
-40 to +125 10 Ld DFN L10.3x3C
• Pb-Free (RoHS Compliant)
Applications
-40 to +85 8 Ld SOIC
M8.15
• Motor Controller/Position Encoder Systems
• Factory Automation
-40 to +85 8 Ld MSOP M8.118
-40 to +85 10 Ld DFN L10.3x3C
ISL3180EIBZ* ISL3180 EIBZ -40 to +85 14 Ld SOIC M14.15
• Field Bus Networks
*Add “-T” suffix for tape and reel. Please refer to TB347 for details on
reel specifications
• Security Networks
NOTE: 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.
• Building Environmental Control Systems
• Industrial/Process Control Networks
TABLE 1. SUMMARY OF FEATURES
RS-485 PIN HOT RX/TX
PART
HALF/FULL DATA RATE
QUIESCENT LOW POWER
PIN
NUMBER
DUPLEX
(Mbps)
ESD LEVEL PLUG?
ENABLE?
I
(mA) SHUTDOWN? COUNT
CC
2.6
2.6
ISL3179E
ISL3180E
HALF
40
16.5kV IEC61000
12kV HBM
YES
YES
YES
YES
YES
8, 10
14
FULL
40
YES
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. 2007, 2008. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
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