SN74LV157A Quadruple 2-Line To 1-Line Data Selectors/Multiplexers

The SN74LV157A from Texas Instruments is a high-performance, quadruple 2-line to 1-line data selector/multiplexer that is designed to facilitate the selection of data from two sources to a single output. This integrated circuit is part of the 74LV family and operates on a low-voltage range, making it ideal for use in 3.3V systems while still maintaining compatibility with 5V systems.

With its wide operating voltage range of 2 V to 5.5 V, the SN74LV157A is versatile and can be used in a variety of digital applications. Each of the four multiplexers in the chip can independently select one of two inputs, which are controlled by the select inputs (A) and enabled by the enable inputs (G). When the enable input is high, all outputs are held low, regardless of the other inputs, allowing the multiplexer to effectively disconnect the output during times when data transfer is not desired.

The SN74LV157A features a high-speed data flow-through capability with a typical tpd (propagation delay time) of 4.5 ns when operating at 5 V. This makes it suitable for high-speed data routing applications. Additionally, the low power consumption and low quiescent current (ICC) of the device help in reducing power usage in battery-powered devices.

Designed with latch-up performance that exceeds 250 mA per JESD 17, the SN74LV157A ensures robust operation in the event of transient conditions. It is also characterized for operation from -40°C to 85°C, making it reliable for use in industrial environments where temperature extremes are common.

Available in various package types, including the compact 16-pin SOIC, TSSOP, and TVSOP, the SN74LV157A is suitable for use in space-constrained applications. With its combination of low-voltage operation, high-speed performance, and robust design, the SN74LV157A is an excellent choice for data selection and multiplexing needs across a wide range of electronic systems.