View mc74hc158 datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HC158 Quad 2-Input Data Selector/Multiplexer High–Performance Silicon–Gate CMOS J SUFFIX CERAMIC PACKAGE The MC54/74HC158 is identical in pinout to the LS158. The device 16 CASE 620–10 inputs are compatible with Standard CMOS outputs; with pullup resistors, 1 they are compatible with LSTTL outputs. These devices route 2 nibbles (A or B) to a single port (Y) as deter- N SUFFIX mined by the Select input. The data is presented at the outputs in inverted PLASTIC PACKAGE form for the HC158. A high level on the Output Enable input sets all four Y 16 CASE 648–08 outputs to a high level for the HC158. 1 • Output Drive Capability: 10 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS and TTL D SUFFIX • Operating Voltage Rang