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