鈥?/div>
Converts ARINC levels to serial data
Adjustable noise 鏗乴ters
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
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 鏗乴tering is accomplished with external capaci-
tors. Two are required for each channel and can be adjusted
for best noise immunity at a speci鏗乧 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.
Description
The RM3183 is a dual line receiver designed to meet all
requirements of the ARINC 429 interface speci鏗乧ation.
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-鏗乴m resistors and
Block Diagram
+V
S
+V
L
9
15
11
18
16
19
17
2
20
Input
Protection
& Level
Shift
In 1A
In 1B
Cap 1A
Cap 1B
Test A
Test B
C1A
Out 1A
C1B
12
Out 1B
Test
Interface
In 2A
In 2B
Cap 2A
Cap 2B
6
4
7
3
1
-V
S
C2A
Input
Protection
& Level
Shift
C2B
8
Out 2A
5
Out 2B
14
Gnd
65-3183-01
Rev. 1.0.0