BUY 74LS157N https://www.utsource.net/itm/p/1386522.html
Description: Quad 2-Input Multiplexer Features: - Low power Schottky TTL - Inputs and outputs fully compatible with TTL levels - Outputs source/sink 24 mA - Input clamp diodes - High noise immunity - High speed - Low input current - Low quiescent power Applications: - Data selection - Data routing - Data storage - Data transmission - Data processing
(For reference only)