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HI-8787 Datasheet(PDF) 1 Page - Holt Integrated Circuits |
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HI-8787 Datasheet(HTML) 1 Page - Holt Integrated Circuits |
1 / 7 page HI-8787, HI-8788 DESCRIPTION FEATURES PIN CONFIGURATION 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 loading2 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 automatically sent. The part requires +/- 10 volt supplies in addition toa5 volt supply. Automatically converts 16 bit parallel data to ARINC 429 or 561 data High speed data bus interface On-chip line driver Available in small TQFP package Military processing options l l l l l 32-Pin Plastic TQFP package January 2001 (DS8787 Rev. B) 01/01 24 - TXBOUT 23 - TXAOUT 22 - V- 21 - PARITY ENB 20 - XMT RDY 19 - XMIT CLK 18 - 17 - RESET WRITE D4- 1 N/C- 2 D5- 3 D6- 4 D7- 5 D8- 6 D9- 7 D10- 8 HI-8787PQI HI-8787PQT HI-8788PQI & HI-8788PQT HOLT INTEGRATED CIRCUITS 1 |
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