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| HD74HC668 Datasheet, PDF (4/14 Pages) Hitachi Semiconductor – Synchronous UP/Down Decade,4-bit binary Counter | |||
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HD74HC668/HD74HC669
Logic Diagram
HD74HC668
Load
U/D
DA
Enable P
Enable T
DB
DC
VCC
DD
CK
L
TQ
INCK Q
L
TQ
INCK Q
L
TQ
INCK Q
L
TQ
INCK Q
QA
QB
QC
QD
RCO
4
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