Electronics
Semiconductor Division
Features
• Adjustable rise and fall times
• Adjustable output voltage swing
• Short circuit protected
• Output overvoltage protected
• Sync and clock enable inputs
• TTL and CMOS compatible inputs
• MIL-STD-883B types available
• 100 Kbits/second data rate
Description
The RM3182 consists of a bus interface line driver circuit
plus auxiliary gating and synchronization circuitry. Designed
to address the ARINC 429 standard, the RM3182 has output
rise and fall times adjustable by the selection of two external
capacitor values, and the output voltage swing range can be
adjusted through an externally applied VREF signal.
The logic inputs as well as the sync control inputs are
TTL-CMOS compatible. The device is constructed on a
monolithic IC using a junction-isolated bipolar process.
Sputtered SiCr resistors are used in the internal bias cir-
cuitry, providing stable internal bias currents. The RM3182
is available in 16-lead ceramic DIP and 28-pad LCC, and can
be ordered with MIL-STD883B high reliability screening.
Block Diagram
Level Shifter
And Slope
Control (A)
Level Shifter
And Slope
Control (B)
65-3182-01
R
L
R
/2
OUT
R
/2
OUT
CL
A
B
(6)
(11)
OUT
OUT
Over-
Voltage
Clamps
Data (A)
Clock
Sync
Data (B)
V1
Power
Enable
(4)
(14)
(3)
(13)
(16)
(2)
Current
Regulator
-VS
CB
Output
Driver
(A)
Output
Driver
(B)
(8)
Gnd
(5)
CA
(9)
+V
S
Notes:
1. RL and CL are external. Full load values are: RL = 400Ω, CL = 0.03µF.
2. Pin numbers are for 16-lead DIP.
(12)
(1)
VREF
(7)
RM3182
ARINC 429 Differential Line Driver
Rev. 1.0.0
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