ONSEMI MC74HC157ADG Quad Data Selector/Multiplexer, 4 Channel, 2:1, SOIC-16

The ONSEMI MC74HC157ADG is a high-speed CMOS quad 2-input Data Selector and Multiplexer, featuring pin compatibility with the LS157 series. Engineered for reliable digital signal routing, this device selects between two 4-bit data sources (A or B) and directs the chosen nibble to a single 4-bit output port (Y), based on the state of the Select input. The outputs present the data in a non-inverted form, ensuring signal integrity.

A key feature is the Output Enable control; applying a high-level signal to this input forces all four Y outputs to a low state, providing easy output management and bus interfacing. The inputs are designed for compatibility with standard CMOS outputs and, when used with pull-up resistors, are fully compatible with LSTTL logic families. This makes the device exceptionally versatile for mixed-logic system design.

Core Features & Performance

• High Noise Immunity: Benefiting from its CMOS construction, the device offers superior noise immunity, a critical factor in industrial and electrically noisy environments.
• Robust Output Drive: The outputs can directly interface with CMOS, NMOS, and TTL circuits, providing a drive capability equivalent to 10 LSTTL loads.
• Low Power Consumption: It maintains a very low input current of just 1µA, contributing to energy-efficient system operation.
• Wide Operating Range: With a supply voltage range from 2V to 6V and an extended operating temperature range from -55°C to 125°C, it is suited for demanding applications across various sectors.
• Standard Compliance: The device is manufactured in compliance with the requirements defined by JEDEC standard No. 7A, ensuring quality and reliability.

Housed in a compact SOIC-16 package, it is ideal for space-constrained PCB designs. With a chip complexity of 82 FETs (or 20.5 equivalent gates), it delivers essential multiplexing functionality with minimal board area.