Device identity and logic role
The SN74153N is a 4-line input TTL multiplexer from Texas Instruments, a workhorse part from the 74-series logic family that routes one of four data sources to a single output based on a two-bit select code.
Production status and compliance
The part is RoHS non-compliant, which means it contains lead and is not suitable for EU RoHS-required assemblies unless an exemption applies.
Supplied in Bulk packaging, the SN74153N comes as loose tubes or trays rather than tape-and-reel, which is typical for DIP-package logic ICs used in through-hole prototyping or low-volume production.