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74HCT297 데이터시트(PDF) 5 Page - NXP Semiconductors |
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74HCT297 데이터시트(HTML) 5 Page - NXP Semiconductors |
5 / 12 page September 1993 5 Philips Semiconductors Product specification Digital phase-locked-loop filter 74HC/HCT297 Fig.4 Functional diagram. K-COUNTER (DIGITAL CONTROL) FUNCTION TABLE D C B A MODULO (K) L L L L L L L L L L H H L H L H inhibited 23 24 25 L L L L H H H H L L H H L H L H 26 27 28 29 H H H H L L L L L L H H L H L H 210 211 212 213 H H H H H H H H L L H H L H L H 214 215 216 217 EXCLUSIVE-OR PHASE DETECTOR FUNCTION TABLE EDGE-CONTROLLED PHASE DETECTOR TABLE Notes 1. H = HIGH voltage level L = LOW voltage level ↓ = HIGH-to-LOW transition ↑ = LOW-to-HIGH transition φA 1 φB XORPDOUT L L H H L H L H L H H L φA 2 φB ECPDOUT H or L ↓ H or L ↑ ↓ H or L ↑ H or L H L no change no change |
유사한 부품 번호 - 74HCT297 |
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유사한 설명 - 74HCT297 |
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