The CD54HC158 and CD54/74HC157, CD54/74HCT157, C.
Texas Instruments
CD74HCT157 - Quad 2-Input Multiplexers
The CD54HC158 and CD54/74HC157, CD54/74HCT157, CD54/74HC158, CD54/74HCT158 CD74HC158 are obsolete and no longer are supplied. Data sheet acquired f.