Features
 Integrated Transient Voltage Suppressor
(TVS) in the Transceiver IC
 TVS Protection for Bus Terminals :
±15 kV IEC 61000-4-2, Contact Discharge
±18 kV IEC 61000-4-2, Air-Gap Discharge
±15 kV EIA/JEDEC Human Body Model
 HBM ±8kV ESD Protection for all pins
 MM ±800V ESD Protection for all pins
 Latchup immunity up to ±400mA for all pins.
 High CDM protection up to ±1kV for all pins.
 Meet the Requirements of the EIA/TIA-485
Standards with 5V Power Supply
 True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
 Data Rate up to 10Mbps
 Hot-Swap Glitch free Protection on Control
Inputs
 High driving ability of VOD2 up to 2.3V
 Up to 256 Transceivers on the Bus
Applications
 Motor Control
 Industrial Control
 Security System
 Building Automation Networks
Description
The AZRS3080E is a ±15kV IEC 61000-4-2
contact discharge protected half-duplex RS485
transceiver IC, which contains one transmitter
and one receiver inside. This device is fully
compliant with the EIA/TIA-485 standard with 5V
power supply.
The AZRS3080E features a fail-safe receiver,
which guarantees the output of the receiver to be
logic high when the differential inputs (bus pins, A
and B) of the receiver are open, short or idle
under abnormal operating conditions.
The AZRS3080E features a hot-swap glitch-free
design which guarantees outputs of the
transmitter and the receiver in a high impedance
state and even no short current event during the
power up period. The AZRS3080E has the
thermal shutdown and the current limited function
in the transmitter to protect the device from
damage by system fault conditions during normal
operating condition. The AZRS3080E is
designed 1/8 unit load with minimum 96kohm of
input impedance, which can connect 256 devices
on a bus at least. The AZRS3080E is also a high
reliable device with built-in system level ESD
protected devices against high-energy noise
transients without requiring any external
components.