HI-8477 Datasheet, PDF (1/15 Pages) Holt Integrated Circuits – On-chipARINC 429 Line Receiver

April 2015
HI-8477, HI-8478
Self-contained ARINC 429 Receiver / Decoder
DESCRIPTION
The HI-8477 is an ARINC 429 Receiver IC, designed for
applications where an MCU is not desired or otherwise
required. The device does not require an MCU for
programmed configuration or operation. It is fully
configured using control input pins, greatly simplifying
system qualification.
The HI-8477 receives ARINC 429 data directly from the
bus and makes the data available at 32 digital output pins.
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 HI-8478 performs exactly the same as the HI-8477
with the exception that the 32 digital outputs from the
ARINC 429 word are the complement (inverse) of the HI-
8477.
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.
A single 1 MHz clock source is required for ARINC 429 bit
timing. The device supports both high-speed and low-
speed ARINC 429 data rates.
The HI-8477 operates from a single 3.3V or 5.0V power
supply.
TYPICAL APPLICATION
CLOCK
FEATURES
! Pin programmable - requires no MCU or software
control
! No need for certification to RTCA DO-178B, “Software
Considerations in Airborne Systems and Equipment”
! Robust CMOS Silicon-on-Insulator (SOI) technology
! On-chip ARINC 429 Line Receiver
! 3.3 V or 5V single supply operation
! Maskable Label Filtering for single label or groups of
labels
! 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.
! HI-8478 option provides the compliment of HI-8477
digital outputs from the 32-bit ARINC 429 word
! Certifiable to RTCA DO-254, “Design Assurance for
Airborne Electronic Hardware”
Label
Received Data bits
ARINC 429
BUS
LINE RECEIVER
ARINC 429
RECEIVER
ARINC 429
LABEL FILTER
ARINC 429 DATA LATCH
(DS8477 Rev. New)
Hard-wired ARINC 429
Receiver
Configuration
ARINC 429
Label
Figure 1
ARINC 429
Label Mask
HOLT INTEGRATED CIRCUITS
www.holtic.com
HI-8477
04/15