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MC74LCX257DR2G Datasheet(PDF) 2 Page - ON Semiconductor |
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MC74LCX257DR2G Datasheet(HTML) 2 Page - ON Semiconductor |
2 / 8 page MC74LCX257 http://onsemi.com 2 Figure 1. Pinout: 16−Lead Plastic Package (Top View) Figure 2. Logic Diagram 15 16 14 13 12 11 10 2 1 3456 7 VCC 9 8 OE I0c I1c Zc I0d I1d Zd S I0a I1a Za I0b I1b Zb GND Za I0a 4 2 S I1a 3 1 Zb I0b 7 5 I1b 6 Zc I0c 12 14 I1c 13 Zd I0d 9 11 I1d 10 OE 15 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 |
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