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HD74HC192P 데이터시트(PDF) 9 Page - Renesas Technology Corp |
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HD74HC192P 데이터시트(HTML) 9 Page - Renesas Technology Corp |
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9 / 14 page ![]() HD74HC192, HD74HC193 Rev.3.00, Jan 31, 2006 page 9 of 13 Count Down QA VCC VOL VOH 0 V 1. Input pulse : PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns 2. tn is reference bit time when outputs are H, L, L, H Notes : tw (H) 50% tf 50% tr 50% QB VOL VOH • Waveform – 2 (HD74HC192) QC VOL VOH QD VOL VOH Borrow VOL VOH 50% 50% 50% 50% 50% 50% 50% 90% 10% tTHL 50% 90% tTLH (Measure at tn+0) tw (L) tPLH 50% (Measure at tn+1) tPHL (Measure at tn+0) tPLH tPHL (Measure before 1 clock of tn+0) (Measure at tn+2) tPLH (Measure at tn+2) tPLH (Measure at tn+0) tPLH (Measure at tn+2) tPHL (Measure at tn+4) tPHL (Measure at tn+6) tPHL 50% 50% |
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