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M54HC273 数据表(PDF) 2 Page - STMicroelectronics |
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M54HC273 数据表(HTML) 2 Page - STMicroelectronics |
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2 / 11 page ![]() TRUTH TABLE INPUTS OUTPUS FUNCTION CLEAR CLOCK D Q L X X L CLEAR HL L HH H H X Qn NO CHANGE X: Don’t Care LOGIC DIAGRAM PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1 CLEAR Master Reset Input (Active LOW) 2, 5, 6, 9, 12, 15, 16, 19 Q0 to Q7 Flip Flop Outputs 3, 4, 7, 8, 13, 14, 17, 18 D0 to D7 Data Inputs 11 CLOCK Clock Input (LOW to HIGH, Edge Triggered) 10 GND Ground (0V) 20 VCC Positive Supply Voltage IEC LOGIC SYMBOL M54/M74HC273 2/11 |
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