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HI-8282APQTF-10 Datasheet(PDF) 1 Page - Holt Integrated Circuits |
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HI-8282APQTF-10 Datasheet(HTML) 1 Page - Holt Integrated Circuits |
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1 / 14 page  HI-8282A ARINC 429 SERIAL TRANSMITTER AND DUAL RECEIVER PIN CONFIGURATION (Top View) GENERAL DESCRIPTION The HI-8282A is a silicon gate CMOS device for interfacing the ARINC 429 serial data bus to a 16-bit parallel data bus. Two receivers and an independent transmitter are provided. The receiver input circuitry and logic are designed to meet the ARINC 429 specifications for loading, level detection, timing, and protocol. The transmitter section provides the ARINC 429 communication protocol. Additional interface circuitry such as the Holt HI-8585, HI-8586 or HI-3182 is required to translate the 5 volt logic outputs to ARINC 429 drive levels. The 16-bit parallel data bus exchanges the 32-bit ARINC data word in two steps when either loading the transmitter or interrogating the receivers. The data bus interfaces with CMOS and TTL. Timing of all the circuitry begins with the master clock input, CLK. For ARINC 429 applications, the master clock frequency is 1 MHz. Each independent receiver monitors the data stream with a sampling rate 10 times the data rate. The sampling rate is software selectable at either 1MHz or 125KHz. The results of a parity check are available as the 32nd ARINC bit. The HI-8282A examines the null and data timings and will reject erroneous patterns. For example, with a 125 KHz clock selection, the data frequency must be between 10.4 KHz and 15.6 KHz. The transmitter has a First In, First Out (FIFO) memory to store 8 ARINC words for transmission. The data rate of the transmitter is software selectable by dividing the master clock, CLK, by either 10 or 80. The master clock is used to set the timing of the ARINC transmission within the required resolution. APPLICATIONS ! ! ! Avionics data communication Serial to parallel conversion Parallel to serial conversion FEATURES ! ! ! ! ! ! ! ! ! ! ! ARINC specification 429 compliant 16-Bit parallel data bus Direct receiver interface to ARINC bus Timing control 10 times the data rate Selectable data clocks 8 word transmit FIFO Self test mode Parity functions Low power, single 5 volt supply Industrial & full military temperature ranges ! ! ! Alternate source to Intersil HS-3282 in all ARINC 429 applications Small footprint 44-pin QFP package option Automatic transmitter data timing Receiver error rejection per ARINC specification 429 HOLT INTEGRATED CIRCUITS www.holtic.com (DS8282A Rev. E) 01/06 January 2006 44-Pin Plastic Quad Flat Pack (PQFP) (See page 10 for additional Package Pin Configurations) 33 - N/C 32 - N/C 31 - 30 - ENTX 29 - 28 - 429DO 27 - TX/R 26 - 25 - 24 - BD00 23 - BD01 CWSTRX 429DO PL2 PL1 N/C - 1 -2 -3 SEL - 4 -5 -6 BD15 - 7 BD14 - 8 BD13 - 9 BD12 - 10 BD11 - 11 D/R1 D/R2 EN1 EN2 HI-8282APQI HI-8282APQT HI-8282APQM |
Similar Part No. - HI-8282APQTF-10 |
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Similar Description - HI-8282APQTF-10 |
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