Features

 Integrated Transient Voltage Suppressor

(TVS) in the Transceiver IC

 TVS Protection for Bus Terminals :

± 9 kV IEC 61000-4-2, Contact Discharge

±10 kV IEC 61000-4-2, Air-Gap Discharge

 HBM ±4kV ESD Protection for all pins

 MM ±400V ESD Protection for all pins

 Latchup immunity up to ±200mA 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 1Mbps

 Hot-Swap Glitch free Protection on Control

Inputs

 High driving ability of VOD2 up to 2.0V

 Up to 256 Transceivers on the Bus

Applications

 Security System

 Industrial Control

 Building Automation

 Telecommunications Equipments

Description

The AZRS6605 is a ± 9kV 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 AZRS6605 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 AZRS6605 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 AZRS6605 has the current

limited function in the transmitter to protect the

device from damage by system fault conditions

during normal operating condition. The

AZRS6605 is designed 1/8 unit load with

minimum 96kΩ of input impedance, which can

connect 256 devices on a bus at least. The

AZRS6605 is also a high reliable device with

built-in system level ESD protected devices

against high-energy noise transients without

requiring any external components.