Role: Military avionics data bus
Type: Command/response, dual-redundant
Speed: 1 Mbps
Topology: One Bus Controller (BC) + many Remote Terminals (RTs) , Bus Monitor (BM) Only BC can initiates data transfer makes it very reliable. Introduced: 1970s

• Deterministic timing → very stable and predictable (military requirement).
• Dual-redundancy → two physical buses; one is backup.
• Transformer-coupled stubs → improve isolation and reliability.
• Messages defined by the BC, RTs only respond.
• Still used widely in fighters (F-16, F-18, Gripen C/D) and missiles.
• Very robust to EMI, radiation, and harsh environments.

Highlights

From youtube videos

https://www.youtube.com/watch?v=tiim2adsLtA One Bus Controller (BC) + many Remote Terminals (RTs) , Bus Monitor (BM) 2 sided bus, commonly labeled as A,B fix set of commands BC→RT : Fire a missile RT→BC : Request, information from avionics instrument RT→RT :

Comes with scheduler, major frame and multiple minor frames Manchester encoding! Dual buses for redundancy ARINC-708 based on MIL-STD-1553 encoding. Developed for airborne weather radar, longer data words, data transmits on both sides of the bus.