The HI-8477 / HI-8478 are ARINC 429 Receivers designed specifically for use without a microprocessor. All configuration and control is programmed via logic level input pins, eliminating the need for a microprocessor or software interface and greatly reducing or eliminating the cost associated with software certification.
The HI-8477 receives ARINC 429 data directly from the bus and makes the data available at 32 digital output pins. The HI-8478 option provides the compliment of HI-8477 digital outputs from the 32-bit ARINC 429 word. ARINC 429 label filtering is defined by 16 digital input pins, defining a maskable label match to enable reception of a single label or group of labels. A parity check pin provides the user the option of checking for correct odd parity on incoming ARINC 429 words. Incorrect parity words are ignored. If parity checking is turned off, all 32 bits of the ARINC word are stored without parity check.
The receiver inputs are lightning protected to RTCA/DO-160G, Section 22 Level 3 Pin Injection Test Waveform Set A (3 & 4), Set B (3 & 5A) and Set Z (3 & 5B) with the use of only two external resistors. The devices support both high-speed and low-speed ARINC 429 data rates, operating from a 1MHz clock source and a single 3.3V or 5.0V power supply.
The devices are available in a 64-pin PQFP package in industrial (−40oC to +85oC) and extended (−55oC to +125oC) temperature ranges.
Features
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Pin programmable - requires no MCU or software control
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No need for certification to RTCA DO-178B, “Software Considerations in Airborne Systems and Equipment”
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Robust CMOS Silicon-on-Insulator (SOI) technology
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On-chip ARINC 429 Line Receiver
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3.3 V or 5.0V single supply operation
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Maskable Label Filtering for single label or groups of labels
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Internal lightning protection circuitry for receiver inputs allows compliance with RTCA/DO-160G, Section 22 Level 3 Pin Injection Tests using only two external resistors
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HI-8478 option provides the compliment of HI-8477 digital outputs from the 32-bit ARINC 429 word.
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Certifiable to RTCA DO-254, “Design Assurance for Airborne Electronic Hardware”
Applications