ARINC 420 avionics databus for commercial aviation applications with long cable runs introduced by Holt

Oct. 22, 2021
HI-3585 can operate autonomously without MCU or software, and can reproduce ARINC 429 signals transmitted over long cable runs or noisy environments.

MISSION VIEJO, Calif. – Holt Integrated Circuits in Mission Viejo, Calif., is introducing the HI-35851 ARINC 429 avionics databus repeater integrated circuit to replace solutions that require software and several components to decode, store, and encode the signal prior to retransmission.

The HI-3585 for commercial aviation applications can operate autonomously without a modular concept unit (MCU) or software, and can reproduce ARINC 429 signals transmitted over long cable runs or noisy environments.

The device provides alternate input and output resistance values on the line receiver and line driver. External digital input control pins set the receiver and transmitter data rates and speed data received from a low speed ARINC 429 bus.

Related: ARINC 429 databus line driver for safety-critical commercial avionics applications introduced by Holt

An option to flip the bit order of the received 8-bit ARINC 429 label prior to re-transmission is also provided.

The device also features ARINC 429 digital outputs to use an external line driver. An additional digital output sets the data rate on the external line driver.

An external HI-8597 line driver can help provide lightning protection on the inputs and outputs that comply with RTCA/DO160G Section 22 Level 3 Pin Injection Test Waveforms.

For more information contact Holt Integrated Circuits online at www.holtic.com.

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