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// Aerospace Military Connectors

ARINC 429 DB25

ARINC 429 is the standard avionics data bus for commercial aircraft using a balanced differential pair at 12.5 or 100 kbps. DB25 connectors aggregate multiple ARINC 429 bus pairs on avionics equipment front panels.

// Specifications
Standard
ARINC 429
Connector
DB25 aggregating multiple buses
Speed
12.5 kbps low or 100 kbps high
Signaling
Differential bipolar Return-to-Zero
Use Case
Commercial aircraft flight management navigation
Topology
One transmitter multiple receivers
// Pin Reference Table
Pin Name Function Type
1 TX1_A Bus 1 transmit positive BUS
2 TX1_B Bus 1 transmit negative BUS
3 RX1_A Bus 1 receive positive BUS
4 RX1_B Bus 1 receive negative BUS
5 TX2_A Bus 2 transmit positive BUS
6 TX2_B Bus 2 transmit negative BUS
13 SHIELD Cable shield GND
14 GND Ground GND