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74VHCT74ATTR Datasheet(PDF) 2 Page - STMicroelectronics |
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74VHCT74ATTR Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 10 page INPUT EQUIVALENT CIRCUIT LOGIC DIAGRAM PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCT ION 1, 13 1CLR, 2CLR Asyncronous Reset - Direct Input 2, 12 1D, 2D Data Input 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 TRUTH TABLE I NPUTS OUT PUT S F UNCTI ON CLR PRDCK Q Q L H X X L H 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 X:Don’t Care Thislogic diagram has notbe used to estimate propagation delays 74VHCT74A 2/10 |
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