Datasheet

2
Functional Diagram
Pinouts
CD54HC374, CD54HCT374
(CERDIP)
CD74HC374, CD74HCT374
(PDIP, SOIC)
TOP VIEW
CD54HC574, CD54HCT574
(CERDIP)
CD74HC574
(PDIP, SOIC)
CD74HCT574
(PDIP, SOIC, TSSOP)
TOP VIEW
TRUTH TABLE
INPUTS OUTPUT
OE CP Dn Qn
L ↑ HH
L ↑ LL
LLXQ0
HXXZ
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
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
OE
Q0
D0
D1
Q1
Q2
D3
D2
Q3
GND
V
CC
D7
D6
Q6
Q7
Q5
D5
D4
Q4
CP
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
OE
D0
D1
D2
D3
D4
D6
D5
D7
GND
V
CC
Q1
Q2
Q3
Q0
Q4
Q5
Q6
Q7
CP
Q
0
D
0
CP
OE
Q
1
D
1
Q
2
D
2
Q
3
D
3
Q
4
D
4
Q
5
D
5
Q
6
D
6
Q
7
D
7
D
CP
Q
D
CP
Q
D
CP
Q
D
CP
Q
D
CP
Q
D
CP
Q
D
CP
Q
D
CP
Q
CD54/74HC374, CD54/74HCT374, CD54/74HC574, CD54/74HCT574