MPN:DM74157N
The DM74157N is a quad 2-to-1 multiplexer (data selector) from National Semiconductor, belonging to the 74xx TTL logic family. It allows one of two data inputs to be selected and routed to the output based on a common select line. The device also features an active-low enable input, making it suitable for data routing, bus selection, signal switching, and digital control circuits. The N suffix denotes a DIP through-hole package, ideal for prototyping and industrial applications.

MPN:DM74LS132N

The DM74LS132N is a quad 2-input NAND gate IC with Schmitt-trigger inputs from the 74LS logic family. The Schmitt trigger action improves noise immunity and provides clean signal transitions, making this IC ideal for use with slow-changing or noisy input signals.

It is widely used in digital logic circuits, pulse shaping, signal conditioning, and timing applications where stable and reliable switching is required.