74LCX257 Description
Truth Table SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y OE GND VCC roducOE PH teL leL oL sL ObX : Don’t Care SELECT X L L H H INPUTS A X L H X X NAME AND FUNCTION mon Data Select Inputs Data Inputs From Source A Data Inputs From Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage OUTPUT BY XZ XL XH LL HH Z : High Impedance 2/13 Figure.