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CD74HC374 Datasheet, PDF (2/9 Pages) Texas Instruments – High Speed CMOS Logic Octal D-Type Flip-Flop, Three-State Positive-Edge Triggered
CD74HC374, CD74HCT374, CD74HC574, CD74HCT574
Functional Diagram
D0
D1
D2
D3
D4
D5
D6
D7
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
D
CP Q
CP
OE
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
TRUTH TABLE
INPUTS
OUTPUT
OE
CP
Dn
Qn
L
↑
H
H
L
↑
L
L
L
L
X
Q0
H
X
X
Z
NOTE:
H = High Level (Steady State)
L = Low Level (Steady State)
X = Don’t Care
↑ = Transition from Low to High Level
Q0 = The level of Q before the indicated steady-state input conditions
were established
Z = High Impedance State
2