CD74FCT821A Datasheet, PDF (2/7 Pages) Texas Instruments – BiCMOS FCT Interface Logic, 10- Bit D-Type Flip-Flops, Three-State

Functional Diagram
CD74FCT821A, CD74FCT822A
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
10
D8
11
D9
OE
1
CP
821A 822A
23
Q0 Q0
22
Q1 Q1
21
Q2 Q2
20
Q3 Q3
19
Q4 Q4
18
Q5 Q5
17
Q6 Q6
16
Q7 Q7
15
Q8 Q8
14
Q9 Q9
13
GND = PIN 12
V_CC = PIN 24
TRUTH TABLE
OUTPUTS
INPUTS
CD74FCT821A CD74FCT822A
OE
CP
DN
QN
QN
L
↑
H
H
L
L
↑
L
L
H
L
L
X
NC
NC
H
X
X
Z
Z
NOTE:
1. H = HIGH level (steady state)
L = LOW level (steady state)
X = Immaterial
↑ = Transition from LOW to HIGH level
Z = HIGH impedance
NC = No change
IEC Logic Symbol
CD74FCT821A
CD74FCT822A
1
EN
13
>C1
2
1D
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
1
EN
13
>C1
2
1D
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
8-2