MC74LCX257DTR2G ON Semiconductor

MC74LCX257 Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 VTolerant Inputs and Outputs (3State, NonInverting) MC74LCX257 V OE I0c I1c Zc I0d I1d Zd 2 CC 4 I0a Za 16 15 14 13 12 11 10 9 3 I1a 5 7 I0b Zb 6 I1b 14 12 1 2 3456 7 I0c 8 Zc I0a I1a I1b 13 S Za I0b Zb GND I1c Figure 1. Pinout: 16Lead Plastic Package 11 I0d 9 (Top View) Zd 10 I1d 15 OE 1 S Figure 2. Logic Diagram PIN NAMES Pins Function l0n Source 0 Data Inputs l1n Source 1 Data Inputs OE Output Enable Input S Select Input Zn Outputs TRUTH TABLE Inputs Outputs OE S l0n l1n Zn H X X X Z L H X L L L H X H H L L L X L L L H X H H = High Voltage Level L = Low Voltage Level X = High or Low Voltage Level and Transitions are Acceptable Z = High Impedance State For ICC reasons, DO NOT FLOAT Inputs