HI-8444 / HI-8445

The HI-8444/HI-8445 are a quad ARINC 429 Line receiver ICs available in a small footprint 20-pin plastic TSSOP package. Each independent receiver channel translates incoming ARINC 429 data bus signals to an associated pair of CMOS/TTL outputs. Using low-power analog/digital CMOS technology, the line receivers will operate from either a 3.3V or 5V supply. Each ARINC input is internally protected to meet the lightning protection requirements of DO-160C/D Level 3, waveforms 3, 4 & 5A. The HI-8444 has inputs (TESTA & TESTB) that bypass the analog circuitry for testing purposes. They force the receiver outputs to the specified ZERO, ONE or NULL state. The ARINC inputs are ignored when the device is in the test mode. The HI-8444 and HI-8445 are drop-in replacements for DEI1044 and DEI1045.



  • Four ARINC 429 line receivers
  • 3.3V or 5.0V single supply operation
  • Test inputs bypass analog inputs and force digital outputs to ZERO, ONE or NULL states (HI-8444 only)
  • Low-power CMOS technology
  • CMOS/TTL compatible outputs
  • ARINC inputs internally lightning protected per DO-160D level 3
  • 20-pin plastic TSSOP package
  • Industrial & extended temperature ranges available
  • HI-8444 is a drop-in replacement for DEI1044
  • HI-8445 is a drop-in replacement for DEI1045



  • Avionics Data Communications
  • ARINC 429 to CMOS/TTL Level Conversion