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74ACT74 Datasheet(PDF) 2 Page - STMicroelectronics |
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74ACT74 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 11 page ![]() 74ACT74 2/12 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION TRUTH TABLE X : Don’t Care LOGIC DIAGRAM This logic diagram has not be used to estimate propagation delays PIN No SYMBOL NAME AND FUNCTION 1, 13 1CLR, 2CLR Asyncronous Reset - Direct Input 2, 12 1D, 2D Data Inputs 3, 11 1CK, 2CK Clock Input (LOW to HIGH, Edge Triggered) 4, 10 1PR, 2PR Asyncronous Set - Direct Input 5, 9 1Q, 2Q True Flip-Flop Outputs 6, 8 1Q, 2Q Complement Flip-Flop Outputs 7 GND Ground (0V) 14 VCC Positive Supply Voltage INPUTS OUTPUTS FUNCTION CLR PR DCK Q Q L H X X L L CLEAR H L X X H L PRESET LL X X H H HH L L H HHH H L HH X Qn Qn NO CHANGE |