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Part Number: HI-8282A
Description: The HI-8282Ais a silicon gate CMOSdevice for interfacing the ARINC429 serial data bus to a 16-bit parallel data bus. Tw...
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HI-8282A
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General Description
HI-8282A General Description
The HI-8282Ais a silicon gate CMOSdevice for interfacing the ARINC429 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 ARINC429 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 outputstoARINC429drivelevels.
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 CMOSandTTL.
Timing of all the circuitry begins with the master clock input, CLK. For ARINC 429 applications, the master clock frequency is1MHz.
Each independent receiver monitors the data streamwith 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 ARINCbit. The HI-8282Aexamines 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 and15.6KHz.
The transmitter has a First In, First Out (FIFO) memory to store 8 ARINCwords 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 thetimingof theARINCtransmissionwithintherequired resolution.
HI-8282A Maximum Ratings
Supply Voltage Vcc ............................-0.3V to +7V
Voltage at ARINC Inputs ...................-29V to +29V
Voltage at any other pin................... -0.3V to Vcc +0.3V
DC Current Drain per input pin ...........10mA
Power Dissipation ...............................500mW
Operating Temperature
Range: (Industrial) .......................-40°C to +85°C
(Military) ........................................-55°C to +125°C
Storage Temperature Range: ..............-65°C to +150°C
Voltage at ARINC Inputs ...................-29V to +29V
Voltage at any other pin................... -0.3V to Vcc +0.3V
DC Current Drain per input pin ...........10mA
Power Dissipation ...............................500mW
Operating Temperature
Range: (Industrial) .......................-40°C to +85°C
(Military) ........................................-55°C to +125°C
Storage Temperature Range: ..............-65°C to +150°C
HI-8282A Features
ARINC specification 429 compatible
16-Bit parallel data bus
Direct receiver interface to ARINC bus
Timing control 10 times the data rate
Selectable data clocks
Receiver error rejection per ARINC specification 429
Automatic transmitter data timing
Self test mode
Parity functions
Low power, single 5 volt supply
Industrial & full military temperature ranges
HI-8282A Typical Application
Avionics data communication
Serial to parallel conversion
Parallel to serial conversion
Serial to parallel conversion
Parallel to serial conversion
HI-8282A Connection Diagram
HI-8282A
PDF/DataSheet Download
- Datasheet: HI-8282A
- File Size: 705137 KB
- Manufacturer: HOLTIC [Holt Integrated Circuits]
- Click here to Download
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