74LVC157A

INTEGRATED CIRCUITS 74LVC157A Quad 2-input multiplexer Product specification Supercedes data of 1997 Nov 07 IC24 Data Handbook 1998 Jul 29 Philips Semiconductors Philips Semiconductors Product specification Quad 2-input multiplexer 74LVC157A FEATURES Wide supply voltage range of 1.2 to 3.6 V In accordance with JEDEC standard no. 8-1A CMOS lower power consumption Direct interface with TTL levels 5 Volt tolerant inputs, for interfacing with 5 Volt logic DESCRIPTION The 74LVC157A is a high-performance, low-power, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3V or 5.0V devices. In 3-State operation, outputs can handle 5V. This feature allows the use of these devices as translators in a mixed 3.3V/5V environment. The 74LVC157A is a quad 2-input multiplexer which select 4 bits of data from two sources under the control of a common data select input (S). The four outputs present the selected data in the true (non-inverted) form. The enable input (E) is active LOW. When E is HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all other input conditions. Moving the data from two groups of registers to four common output buses is a common use of the 74LV157. The state of the common data select input (S) determines the particular register from which the data comes. It can also be used as function generator. The device is useful for implementing highly irregular logic by generating any four...