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M74HC195M1R Scheda tecnica(PDF) 2 Page - STMicroelectronics |
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M74HC195M1R Scheda tecnica(HTML) 2 Page - STMicroelectronics |
2 / 13 page INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS OUTPUS CLEAR SHIFT/ LOAD CLOCK SERIAL PARALLEL QA QB QC QD QD J K ABCD L X X X X XXXX L L L L L H L X X a b c d abc d d H H X X XXXX QA0 QB0 QC0 QD0 QD0 H H L H XXXX QA0 QA0 QBn QCn QCn H H L L XXXX L QAn QBn QCn QCn H H H H XXXX H QAn QBn QCn QCn H H H L XXXX QAn QAn QBn QCn QCn X: Don’t Care: The level of QA, QB, QC, respectively, before the mst recent positive transition of the clock. PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1 CLEAR Reset Input (Active LOW) 2 J First Stage J Input (Active LOW) 3 K First Stage K Input (Active LOW) 4, 5, 6, 7 A to D Parallel Data Input 9 SHIFT/LOAD Control Input 10 CLOCK Clock Input (LOW to HIGH Edge-triggered) 11 QD Inverted Output From The Last Stage 15, 14, 13, 12 QA to QD Paralle Outputs 8 GND Ground (0V) 16 VCC Positive Supply Voltage IEC LOGIC SYMBOL M54/M74HC195 2/13 |
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