Electronics
Semiconductor Division
Features
• Converts ARINC levels to serial data
• Adjustable noise filters
• TTL and CMOS compatible outputs
• Built-in test inputs
• Input protection circuitry
• Mil-Std-883B screening available
• 20-pin DIP and LCC packages available
• Dice with Mil visual screening available
Description
The RM3183 is a dual line receiver designed to meet all
requirements of the ARINC 429 interface specification.
It contains two independent receiver channels which accept
differential input signals and converts them to serial TTL
data.
Input overvoltage protection is provided by special circuitry
including dielectrically-isolated thin-film resistors and
clamping diodes. Self-test logic inputs are provided for
internal system tests. These inputs force the outputs to
either a high, a low, or a null state for off-line system tests.
Input noise filtering is accomplished with external capaci-
tors. Two are required for each channel and can be adjusted
for best noise immunity at a specific data rate.
Three power supplies are needed plus ground. The input
thresholds depend only on the logic supply, so a wide range
of dual supplies can be accommodated.
The Raytheon RM3183 line receiver is the companion chip
to the RM3182 line driver. Together they provide all the
analog functions needed for the ARINC 429 interface.
Digital data processing involving serial-to-parallel conver-
sion and clock recovery can be accomplished using one of
the ARINC interface ICs available or by discrete or gate
array implementations.
Block Diagram
65-3183-01
-VS
+VS
C1A
C1B
Gnd
+VL
Input
Protection
& Level
Shift
Test
Interface
C2A
C2B
Input
Protection
& Level
Shift
Out 1A
Out 1B
Out 2A
Out 2B
In 1A
In 1B
Cap 1A
Cap 1B
Test A
Test B
In 2A
In 2B
Cap 2A
Cap 2B
18
16
19
17
2
20
6
4
7
3
114
11
9
15
12
8
5
RM3183
Dual ARINC 429 Line Receiver
Rev. 1.0.0
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