The ARINC 429 Multi-Bit Binary Decoder (SR429/4D) from Applied Avionics can provide a full binary decode for up to three bits from a single ARINC 429 data label. The 2 X 4 decoder option is available in an 8-pin package (expandable to 12-pin) while the 3 X 8 decoder is a 12-pin device. The polarity of the decoded outputs is selectable (one selection for all decoded results).
The ARINC converter circuitry inside the SR429/4D includes an internal Health Monitor that can provide a “fail” indication if power to the decoder is lost or upon loss of valid ARINC data input. The Health Monitor has a range of watchdog timings requiring a valid ARINC label to be received within a specified time interval. If specified, the Health Monitor can be selected as a decoder input.
3 X 8 Decoder
Three specified ARINC data bits are input to the 3 X 8 decoder producing eight binary results on eight separate output pins. Output polarity for the decoded bits can be specified as Open = True or Ground = True.
To help system designers understand the potential of NEXSYS Component Technology, we have assembled a collection of Application Notes. The links below show example applications that utilize the ARINC 429 Multi-Bit Binary Decoder (SR429/4D) component.