HI-31820 / HI-31830 / HI-31840 / HI-31850 / HI­-31860 / HI-31880

The HI-31820, HI-31830, HI-31840, HI-31850, HI-31860 and HI-31880 bus interface products are silicon gate CMOS devices designed as a line driver in accordance with the ARINC 429 bus specifications. Each device is a form, fit, function drop-in replacement for Holt’s HI-3182, HI-3183, HI-3184, HI-3185, HI-3186 and HI-3188 devices respectively. In addition, the devices are functional upgrades of Holt's HI-8382 & HI-8383 products, and alternate sources for the HS-3182 (Intersil/Harris), the RM3182 (Fairchild /Raytheon) and a variety of similar line driver products from other manufacturers.

Inputs are provided for clocking and synchronization. These signals are AND'd with the DATA inputs to enhance system performance and allow the HI-318X0 series of products to be used in a variety of applications. Both logic and synchronization inputs feature built-in 2,000V minimum ESD input protection as well as TTL and CMOS compatibility.

The differential outputs of the HI-318X0 series of products are programmable to either the high speed or low speed ARINC 429 output rise and fall time specifications through the use of two external capacitors. The output voltage swing is also adjustable by the application of an external voltage to the VREF input. Products with 0, 13 or 37.5 ohm resistors in series with each ARINC output are available. In addition, the HI-31820 and HI-31840 products also have a fuse in series with each output.

The HI-318X0 series of line drivers are intended for use where logic signals must be converted to ARINC 429 levels such as when using an ASIC, the HI-3282/HI-8282A ARINC 429 Serial Transmitter/Dual Receiver, the HI-6010 ARINC 429 Transmitter/Receiver or the HI-8783 ARINC Interface Device. Holt products are readily available for both industrial and military applications. Please contact the Holt Sales Department for additional information.



  • Low Power CMOS
  • Drop-in replacement for HI-3182, HI-3183, HI-3184, HI-3185, HI-3186 and HI-3188
  • TTL and CMOS Compatible Inputs
  • Programmable Output Voltage Swing
  • Adjustable ARINC Rise and Fall Times
  • Plastic 14 & 16-Pin Thermally Enhanced SOIC Packages Available
  • Pin-for-Pin Alternative For DEI/DDC/Intersil/Fairchild Applications
  • Overvoltage Protection
  • Industrial & Extended Temperature Ranges Available



  • Avionics Data Communication
  • CMOS/TTL to ARINC 429 Level Conversion
  • CMOS/TTL to RZ & NRZ Level Conversion