CD54FCT245 Datasheet, PDF (2/7 Pages) Texas Instruments – BiCMOS FCT Interface Logic, Octal-Bus Tranceivers, Three-State

Functional Diagram
CD54FCT245, CD74FCT245
A0
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
DIR
1
OE
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
19
GND = PIN 10
V_CC = PIN 20
TRUTH TABLE (NOTE 1)
CONTROL INPUTS
OE
DIR
OPERATION
L
L
B Data to A Bus
L
H
A Data to B Bus
H
X
Isolation
NOTES:
1. H = High Voltage Level
L = Low Voltage Level
X = Irrelevant
2. To prevent excess currents in the High-Z (isolation) modes, all I/O terminals should be terminated
with 10kΩ to 1 MΩ resistors.
IEC Logic Symbol
CD74FCT245, CD54FCT245
19
G3
3EN1
1
3EN1
1
2
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
2