CD74FCT573 Datasheet, PDF (2/7 Pages) Texas Instruments – BiCMOS FCT Interface Logic, Octal Transparent Latches, Three-State

Functional Diagram
CD74FCT573, CD74FCT573AT
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
LE
11
OE
19
Q0
18
Q1
17
Q2
16
Q3
15
Q4
14
Q5
13
Q6
12
Q7
1
GND = PIN 10
V_CC = PIN 20
TRUTH TABLE (Note 1)
OUTPUT
ENABLE
LATCH
ENABLE
DATA
OUTPUT
L
H
H
H
L
H
L
L
L
L
l
L
L
L
h
H
H
X
X
Z
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
l = Low voltage level one set up time prior to the high to low latch enable transition.
h = High voltage level one set up time prior to the high to low latch enable transition.
X = Irrelevant
Z = High Impedance
IEC Logic Symbol
CD74FCT573, CD74FCT573AT
1
11
EN
C1
2
1D
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
8-2