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DESCRIPTION

The HI-8591 is an ARINC 429 bus interface receiver designed to operate from a single 3.3 V or 5 V supply. The part is designed with high-impedance inputs to minimize bus loading, and has an exceptional input common-mode performance in excess of +/- 30V, making it immune to ground offsets around the aircraft. The RINA and RINB inputs of the standard HI-8591 may be connected directly to the ARINC 429 bus. To enable external lightning protection circuitry to be added, the HI-8591-40 variant is available. The HI-8591-40 requires only the addition of external 40 K , ? watt resistors in series with RINA and RINB to allow the part to meet the lightning protection requirements of DO-160D level 3.

FEATURES

ARINC 429 line receiver interface in a small outline package

3.3V single rail supply voltage

+/-30 V common-mode performance

>140 KOhm input impedance

Lightning protection simplified with the ability to add 40 KOhm external series resistors

Receiver input hysteresis at least 2 volt

Test inputs bypass analog inputs and force digital outputs to a one, zero or null state