Integrated Circuits
Source: Holt Integrated Circuits
The HI-8585 and HI-8586 are CMOS integrated circuits designed to directly drive the ARINC429 bus in an 8pin package
Holt Integrated Circuits and HI-8586 are CMOS integrated circuits designed to directly drive the ARINC429 bus in an 8pin package. Two logic inputs control a differential voltage between the output pins producing a +10 volt One, a -10 volt Zero, and a 0 volt Null.
The CMOS/TTL control inputs are translated to ARINC specified amplitudes using onboard zeners. A logic input is provided to control the slope of the differential output signal. Timing is set by on-chip resistor and capacitor and tested to be within ARINC requirements.
Holt Integrated Circuits has 37.5 ohms in series with each line driver output. The HI-8586 provides the option to bypass most of the output resistances so that series protection circuits can add their resistances.
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