±15 kV ESD Protected Dual RS-422 Transceiver

The ADM4168E is a dual RS-422 transceiver suitable for high speed communication on point to point and multidrop transmission lines. The ADM4168E is designed for balanced transmission lines and complies with TIA/EIA-422-B.

The differential driver outputs and receiver inputs feature electrostatic discharge (ESD) circuitry that provides protection up to ±15 kV human body model (HBM) and ±8 kV IEC 61000-4-2 (contact and air discharge).

The ADM4168E operates from a single 5 V power supply. Excessive power dissipation caused by bus contention or output shorting is prevented by short-circuit protection circuitry. Short-circuit protection circuits limit the maximum output current to −150 mA during fault conditions.

The receivers of the ADM4168E contain a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).

The ADM4168E is fully specified over the commercial and industrial temperature ranges and is available in a 16-lead TSSOP package.

Applications

* RS-422 interfaces

* High data rate motor control

* Single-ended to differential signal conversion

* Point to point and multidrop transmission systems

* Dual RS-422 transceiver for ESD protection on bus input/output pins

* ±15 kV HBM

* ±8 kV IEC 61000-4-2, contact discharge

* ±8 kV IEC 61000-4-2, air discharge

* Complies with TIA/EIA-422-B and ITU-T recommendation V.11

* Open circuit fail-safe