HI-3584APQI-15

The Holt Integrated Circuits HI-3584APQI-15 is a silicon gate CMOS device that interfaces a 3.3V 16-bit parallel data bus to the ARINC 429 serial bus. This high-speed host CPU interface offers a significant advantage over earlier models.

The device includes two independent receivers, each equipped with label recognition capabilities and a 32x32 FIFO. Up to 16 labels can be programmed for each receiver. An independent transmitter also features a 32x32 FIFO. The status of all three FIFOs can be monitored via external status pins or by polling the status register.

Additional features include a programmable option for the 32nd bit to be data or parity, and the ability to unscramble the 32-bit word. Versions are available with varying input resistance values to facilitate the addition of external lightning protection circuitry. The 16-bit parallel data bus exchanges the 32-bit ARINC data word in two steps for both transmitter loading and receiver interrogation. The databus and control signals are CMOS and TTL compatible, operating on a 1 Megahertz clock.

Applications for the HI-3584APQI-15 include Avionics, Data Communication, Serial to Parallel Conversion, and Parallel to Serial Conversion. It is supplied in a 52-Pin Plastic Quad Flat Pack (MQFP) and operates within industrial and extended temperature ranges.