What this dual 4:1 multiplexer does on the board
The CD74AC153M96 is a dual 4:1 multiplexer from TI's 74AC family — two independent 4-input data selectors on one 16-SOIC package. It sources or sinks 24 mA per output, enough to drive a standard TTL load or a short trace on a PCB without a buffer. The full military temperature span of -55°C to 125°C means it can sit in an outdoor telecom cabinet or an engine-bay ECU without derating.
Package and rework considerations
The 24 mA output drive does not generate enough heat to require a thermal pad, so the standard SOIC footprint with no exposed paddle is fine.
Sourced through authorized and independent distribution channels; pricing and lead time are confirmed at RFQ against the BOM quantity. The 16-SOIC package is widely stocked in the 74AC series, so cross-shipping is straightforward if a line-down situation arises.