ARINC 429 defines the Air Transport Industry's standard for the transfer of digital data between avionics systems.  This standard defines the Electrical Interface, Label and Address assignments, and Word Format Description.

429waveform.gif (1717 bytes)The Waveform of the ARINC 429 signals is a differential bipolar RZ type. As shown in the diagram to the right, logic levels are determined by the voltage difference between the two communication lines. There are many timing and voltage level specifications associated with the ARINC 429 specification. This data can be found primarily in the ARINC 429 specification itself, however DEI has included most pertinent information with the data sheets of our interface devices.

Device Engineering has developed a complete line of Integrated Circuits that can be used to transmit and receive digital data over the ARINC 429 data bus. These IC's include receivers, line drivers, and transceivers. When used together this family of high performance devices ensures complete adherence to the ARINC 429 specification. Download a master selection chart here or continue below for additional information.

 

 
 

ARINC 429 Line Drivers

  
   

Based on the ARINC 429 specification for serial communication, Device Engineering has developed a complete product line of line drivers that accept TTL/CMOS signals and put the data on the ARINC 429 avionics serial bus.  These devices will also interface similar RZ type busses such as the 571 and 575. Many of the line drivers also support differential NRZ type serial busses such as the RS-422.  A complete list of available line drivers can be found in the Line Driver Selection Guide.

 
 

ARINC 429 Line Receivers

  
    Incoming Data on the serial bus is in the dual rail format of the ARINC 429 and must be converted to signals that can be used in normal TTL/CMOS circuitry. Device Engineering offers these "line receivers" in a multitude of arrangements and packages.
Click Here to view DEI's line receiver products.

 

 
 

ARINC 429 Tranceivers

  
    The Transceiver circuit is used to interface a standard 16 bit wide micro computer bus with the ARINC serial data bus. The interface circuit includes a transmitter circuit, two identical but independent receiver circuits, and a programmable control register to select operating options.
Click Here to View DEI's Transceiver Circuits. 		 
 

 

  
 
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