The 74HC157 / SN74LS157 is a quad 2-to-1 multiplexer IC that allows selection of four pairs of data inputs and routes them to a single output line per channel, controlled by a common select input. It is widely used in digital logic circuits, microcontroller-based projects, industrial automation, IoT devices, and FPGA/processor designs. The IC is TTL/CMOS compatible, operates with low power consumption, and provides fast switching speeds. Available in DIP and SOIC packages, the 157 multiplexer is manufactured by trusted brands such as Texas Instruments, Nexperia, ON Semiconductor, and STMicroelectronics. NeoGiga India ensures authentic 74HC157 / SN74LS157 ICs with bulk supply, institutional pricing, and express nationwide delivery, supporting students, research labs, OEMs, and automation engineers.