MIL-HDBK-1553A, MILITARY HANDBOOK MULTIPLEX APPLICATIONS HANDBOOK (1 NOV 1998)., This document provides rationale and guidance on the use of requirements contained in MIL-STD-1553B, Aircraft Internal Time Division Command/Response Multiplex Data Bus. New MlL-STD-1553 system designs and advances in microelectronics since the first MIL-HDBK-1553 was published were the motivation for this revision. It describes new MlL-STD-1553 state-of-the-art multiplexing, it retains the valuable fundamentals of the original handbook, and it contains help for— a. Government engineers who write requirements for equipment with MlL-STD-1553 interfaces or specify systems that conform to MlL-STD-1553. “Black box” designers who design equipment that interfaces with the MlL-STD-1553 multiplex bus. System designers and integrators who design systems incorporating multiple units that communicate via a MlL-STD-1553 multiplex bus.