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HD74LS194AP датащи(PDF) 5 Page - Renesas Technology Corp |
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HD74LS194AP датащи(HTML) 5 Page - Renesas Technology Corp |
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5 / 8 page ![]() HD74LS194A Rev.3.00, Jul.15.2005, page 5 of 7 Testing Table Inputs Item From input to output CLR S1 S0 CK L R A B C D right-shift 4.5V 4.5V GND IN 4.5V IN GND GND GND GND ƒmax left-shift 4.5V GND 4.5V IN IN 4.5V GND GND GND GND Clear →Q IN 4.5V 4.5V IN GND GND 4.5V 4.5V 4.5V 4.5V 4.5V 4.5V GND IN 4.5V IN GND GND GND GND tPLH tPHL Clock →Q 4.5V 4.5V GND IN IN 4.5V GND GND GND GND Outputs Item From input to output QA QB QC QD right-shift OUT OUT OUT OUT ƒmax left-shift OUT OUT OUT OUT Clear →Q OUT OUT OUT OUT OUT OUT OUT OUT tPLH tPHL Clock →Q OUT OUT OUT OUT Waveforms 1 ( ƒ max, CK →Q) CK 1.3V 1.3V 1.3V L, R Q tTLH tw (CK) tn tn+1 tTHL VOH VOL 0V 3V 0V 3V 10% 10% 90% 1.3V 1.3V 1.3V 1.3V 1.3V tPHL 1.3V tPHL 1.3V tPLH 1.3V tPLH tn tn+1 1.3V tTLH 10% 90% 90% tTHL tsu tsu th th 10% 90% Notes: 1. Right-shift is measured with QA at tn + 1, QB at tn + 2, QC at tn + 3, and QD at tn + 4. Left-shift is measured with QA at tn + 4, QB at tn + 3, QC at tn + 2, and QD at tn + 1. |
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