View 74lvc157a 2 datasheet:

INTEGRATED CIRCUITS 74LVC157A Quad 2-input multiplexer Product specification 1998 Jul 29 Supercedes data of 1997 Nov 07 IC24 Data Handbook Philips Semiconductors Philips Semiconductors Product specification Quad 2-input multiplexer 74LVC157A input (S). The four outputs present the selected data in the true FEATURES (non-inverted) form. The enable input (E) is active LOW. When E is • Wide supply voltage range of 1.2 to 3.6 V HIGH, all of the outputs (1Y to 4Y) are forced LOW regardless of all • In accordance with JEDEC standard no. 8-1A other input conditions. Moving the data from two groups of registers to four common output buses is a common use of the 74LV157. The • CMOS lower power consumption state of the common data select input (S) determines the particular • Dire