SN54F257, SN74F257 QUADRUPLE 2ĆLINE TO 1ĆLINE DA.
Texas Instruments
SN74F257 - Quadruple 2-Line To 1-Line Data Selectors/Multiplexers
SN54F257, SN74F257 QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS WITH 3ĆSTATE OUTPUTS SDFS065A − D2932, MARCH 1987 − REVISED OCTOBER 1993 • .
