HI-8475 Datasheet, PDF (1/16 Pages) Holt Integrated Circuits – On-chipARINC 429 Line Receiver

November 2014
HI-8475, HI-8476
Self-contained ARINC 429 Receiver / Decoder
DESCRIPTION
The HI-8475 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 64-pin HI-8475 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.
The 128-pin HI-8476 option increases the label match
capability by two maskable labels, and provides both true
and complementary digital outputs to simplify external
logic, or set a default post-reset condition for downstream
circuits, before a first ARINC 429 word is received.
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-8475 operates from a single 3.3V or 5.0V power
supply.
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.
! 128-pin HI-8476 option provides enhanced label
filtering and output flexibility
! Certifiable to RTCA DO-254, “Design Assurance for
Airborne Electronic Hardware”
TYPICAL APPLICATION
CLOCK
Label
Received Data bits
ARINC 429
BUS
LINE RECEIVER
ARINC 429
RECEIVER
ARINC 429
LABEL FILTER
ARINC 429 DATA LATCH
(DS8475 Rev. A)
Hard-wired ARINC 429
Receiver
Configuration
ARINC 429
Label
Figure 1
ARINC 429
Label Mask
HOLT INTEGRATED CIRCUITS
www.holtic.com
HI-8475
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