SN54HCT257, SN74HCT257 QUADRUPLE 2ĆLINE TO 1ĆLIN.
Texas Instruments
SN74HCT257 - QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXER
SN54HCT257, SN74HCT257 QUADRUPLE 2ĆLINE TO 1ĆLINE DATA SELECTORS/MULTIPLEXERS WITH 3ĆSTATE OUTPUTS SCLS072D − NOVEMBER 1988 − REVISED SEPTEMBER 2003 .
