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The BD429 ARINC Line Driver Circuit is a bipolar monolithic IC designed to meet the requirements of several general aviation serial data bus standards. These include the differential bipolar RZ types such as ARINC 429, ARINC 571, and ARINC 575, as well as the differential NRZ types such as the RS-422 standard.


  • ARINC 429 Line Driver for HI speed (100 kHz) and LOW speed (12.5 kHz) data rates
  • Pin for Pin replacement part for industry standard ARINC 429 Line Drivers
  • Low EMI RS-422 line driver mode for data rates up to 100 kHz
  • Adjustable slew rates via two external capacitors
  • Inputs are TTL and CMOS compatible
  • Low quiescent power of 125mW (typical)
  • Programmable output differential range via VREF pin
  • Outputs are fused for failsafe overvoltage protection
  • Drives full ARINC load of 400W and 30,000pF
  • Extended (-55°/+85°) and Military (-55°/+125°) temperature ranges
  • 100% Final Testing


temp range: -55 to 85
product package type: 28 PLCC
burn in:
channels: 1
power supply range: +/-15
lightning protection:
Years to EOL: 10
errata sheets: ES-MW-00429-01-A.pdf
holt x-ref: HI-3182
ddc x-ref pn: DD-03182DC
other x-ref pn: HS1-3182
output resistance: 37.5
tri state outputs:
fused outputs:
digital psu: 5
package description: 28 Pin Plastic J-lead Chip Carrier
package type: Surface Mount
package pic: 28L LCC Plastic.png
jedec: DS-MW-00429-01
RoHS: MS-018-AB
product status:
Replacement PN: Active

Functional Description:

Modes: The BD429 operates in either a 429 mode or a 422 mode as controlled by the 429/422 pin. 429 Mode: In 429 mode, the serial data is presented on the DATA(A) and DATA(B) inputs in the dual rail format defined in the MARK 33 Digital Information Transfer System

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