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Device
Engineering
Incorporated
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Chandler, AZ 85225
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E-mail: admin@deiaz.com
DEI1073, DEI1074, DEI1075
ARINC 429 LINE DRIVER WITH RATE
SELECT AND TRI-STATE
FEATURES
• TTL/CMOS TO ARINC 429 Line Driver.
• Rate control input set Hi (100KBS) or Lo (12.5KBS) speed slew rates.
• Operates from ±9.5V to ±16.5V power supply.
• Drives full ARINC load.
• Output resistor options: 0, 10 or 37.5 Ohms.
• Tristate Outputs
• Thermally enhanced 8 lead SOIC package.
• Outputs Short Circuit Tolerant
GENERAL DESCRIPTION
The DEI1073 family of 8 pin BiCMOS integrated circuits are line drivers designed to directly drive the ARINC 429 avionics
serial digital data bus. The device converts TTL/CMOS serial input data to the tri-level RZ bipolar differential modulation
format of the ARINC bus. The outputs are tri-state capable. A TTL/CMOS control input selects the output slew rate for HI
(100KBS) and LOW (12.5KBS) speed operation. No external timing capacitors are required.
The DEI1073 has internal 37.5 Ohm output resistors, the DEI1074 has 10 Ohm resistors, and the DEI1075 has none. The 10
and 0 Ohm options require external series resistors which are typically used to implement a transient voltage protection
network.
HI/LO 1
TTLIN0 2
TTLIN1 3
GND 4
8 V+
7 429OUTB
6 429OUTA
5 V-
Note:
Heatsink pad is electrically Isolated.
Table 1 PIN DESCRIPTION
PIN NAME
DESCRIPTION
1
HI/LO
LOGIC INPUT. Slew rate control. 1 = Hi speed. 0
= Low speed.
2
TTLIN0
LOGIC INPUT. Serial digital data input 0.
3
TTLIN1
LOGIC INPUT. Serial digital data input 1.
4
GND
POWER INPUT. Ground.
5 V- POWER INPUT. –9.5 to –16.5 VDC
6
429OUTA
429 OUTPUT. ARINC 429 format serial digital data
output A.
7
429OUTB
429 OUTPUT. ARINC 429 format serial digital data
output B.
8 V+ POWER INPUT. +9.5 to +16.5 VDC.
©2004 Device Engineering Inc
Page 1 of 8
DS-MW-01073-01 Rev C
05/31/2005
