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www.fairchildsemi.com
Features
Two separate analog receiver channels
Converts ARINC 429 levels to serial data
Built-in TTL compatible complete channel test inputs
TTL and CMOS compatible outputs
Low power dissipation
Internal bandgap
Short circuit protected
MIL-STD-883B screening available for ceramic packages
Available in 20-Lead ceramic DIP, 20-Terminal LCC, and
20-Lead SOIC
Description
The RM3283 consists of two analog ARINC 429 receivers
which take differentially encoded ARINC level data and
convert it to serial TTL level data. The RM3283 provides
two complete analog ARINC receivers and no external
components are required.
Input level shifting thin film resistors and bipolar technology
allow ARINC input voltage transients up to
damage to the RM3283.
±
100V without
Each channel is identical, featuring symmetrical propagation
delays for better high speed performance. Input common
mode rejection is excellent and threshold voltage is stable,
independent of supply voltage. Data outputs are TTL and
CMOS compatible.
Two TTL compatible test inputs used to test the ARINC
channels are available. They can be used to override the
ARINC input data and set the channel outputs to a known
state.
The Fairchild RM3182/RM3182A line driver is the
companion chip to the RM3283 line receiver. Together they
provide the analog functions needed for the ARINC 429
interface. Digital data processing involving serial-to-parallel
conversion and clock recovery can be accomplished using
one of the ARINC interface IC’s available or by an
equivalent gate array implementation.
Block Diagram
65-3283-01
-V
S
+V
S
Gnd
+V
L
Bit
Detection
and Level
Shifting
Hysteresis
Channel
Test
Circuitry
Bit Detection
and Level
Shifting
Hysteresis
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
1
14
11
9
15
12
8
5
Output
Driver
Output
Driver
Bandgap Voltage
Reference
Threshold
Generator
RM3283
RM3283
Dual ARINC 429 Line Rec eiver
Rev. 1.0.0