HI-8787

DESCRIPTION

The HI-8787 and HI-8788 are system components for interfacing 16 bit parallel data to an ARINC 429 bus. They combine logic and line driver on one chip. The HI-8787 has an output resistance of 37.5 ohms, and the HI-8788 has output resistance of 10 ohms to facilitate external lightning protection circuitry. The technology is analog/digital CMOS. Both products offer high speed data bus transactions into a buffer register. After loading 2 each 16-bit words, data is automatically transferred and transmitted. The data rate is equal to the clock rate. Parity can be enabled in the 32nd bit. Reset is used to initialize the logic upon startup. Word gaps are sent automatically. The part requires +/- 10 volt supplies in addition to a 5 volt supply.

FEATURES

Automatically converts 16 bit parallel data to ARINC 429 or 561 serial data 

High speed data bus interface 

On-chip line driver 

Available in small TQFP package 

Industrial and extended temperature ranges