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MC74LCX240 Datasheet(PDF) 2 Page - ON Semiconductor |
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MC74LCX240 Datasheet(HTML) 2 Page - ON Semiconductor |
2 / 7 page ![]() MC74LCX240 http://onsemi.com 2 Figure 1. Pinout: 20−Lead (Top View) 19 20 18 17 16 15 14 2 1 34567 VCC 13 8 12 9 11 10 2OE 1O0 2D0 1O1 2D1 1O2 2D2 1O3 2D3 1OE 1D0 2O0 1D1 2O1 1D2 2O2 1D3 2O3 GND Figure 2. LOGIC DIAGRAM 1OE 1 1D0 2 1O0 18 1D1 4 1O1 16 1D2 6 1O2 14 1D3 8 1O3 12 2OE 19 2D0 17 2O0 3 2D1 15 2O1 5 2D2 13 2O2 7 2D3 11 2O3 9 PIN NAMES Function Output Enable Inputs Data Inputs 3−State Outputs Pins nOE 1Dn, 2Dn 1On, 2On TRUTH TABLE INPUTS OUTPUTS 1OE 2OE 1Dn 2Dn 1On, 2On L L H L H L H X Z H = High Voltage Level L = Low Voltage Level Z = High Impedance State X = High or Low Voltage Level and Transitions Are Acceptable; for ICC reasons, DO NOT FLOAT Inputs |