전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크
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HD74HC669 데이터 시트보기 (PDF) - Renesas Electronics
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HD74HC669
Synchronous UP/Down Decade Counter Synchronous Up/Down 4-bit binary Counter
Renesas Electronics
HD74HC669 Datasheet PDF : 13 Pages
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HD74HC668, HD74HC669
Test Circuit
V
CC
Input
Pulse Generator
Z
out
= 50
Ω
Input
Pulse Generator
Z
out
= 50
Ω
V
CC
Output
U/
D
QA
Clock
A
QB
B
C
QC
D
Enable
P
QD
Load
Ripple
Enable
T
Carry
Output
Output
Output
Output
C
L
= 50 pF
C
L
= 50 pF
C
L
= 50 pF
C
L
= 50 pF
C
L
= 50 pF
Note : 1. C
L
includes probe and jig capacitance.
Rev.2.00 Mar 30, 2006 page 8 of 10
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