74vcx32245 Fairchild Semiconductor, 74vcx32245 Datasheet - Page 2

• Manufacturer Part Number: 74vcx32245
• Description: Voltage 32-bit Bidirectional Transceiver
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Connection Diagram
Truth Tables
H
L
X
Z
L
L
H
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial (HIGH or LOW, inputs and I/O’s may not float)
OE
OE
OE
OE
H
H
H
L
L
L
L
L
L
1
2
3
4
Inputs
Inputs
Inputs
Inputs
L
H
X
T/R
T/R
T/R
T/R
H
X
H
X
H
X
L
L
L
1
2
3
4
(Top Thru View)
Bus B
Bus A
HIGH Z State on A
Bus B
Bus A
HIGH Z State on A
Bus B
Bus A
HIGH Z State on A
Bus B
Bus A
HIGH Z State on A
0
0
8
8
16
16
24
24
–B
–A
–B
–A
–B
–A
–B
–A
7
7
15
15
23
23
31
31
Data to Bus A
Data to Bus B
Data to Bus A
Data to Bus B
Data to Bus A
Data to Bus B
Data to Bus A
Data to Bus B
Outputs
Outputs
Outputs
Outputs
0
8
16
24
–A
–A
–A
–A
7
15
, B
23
31
, B
0
0
, B
, B
–A
–B
0
8
8
–B
–A
–B
8
16
16
24
24
–B
16
24
7
7
–A
–B
–A
–B
7
15
15
–B
–B
15
23
23
31
31
23
31
2
Pin Descriptions
FBGA Pin Assignments
Logic Diagram
OE
T/R
A
B
Pin Names
0
0
–A
–B
A
B
C
D
G
H
K
M
N
R
E
F
J
L
P
T
n
n
31
31
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
1
11
13
14
17
19
21
23
25
27
29
30
1
3
5
7
9
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
2
10
12
15
16
18
20
22
24
26
28
31
0
2
4
6
8
GND
GND
GND
GND
GND
GND
GND
GND
T/R
T/R
T/R
T/R
V
V
V
V
3
CC
CC
CC
CC
Description
1
2
3
4
GND
GND
GND
GND
GND
GND
GND
GND
OE
V
V
OE
OE
V
V
OE
4
CC
CC
CC
CC
1
2
3
4
Preliminary
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
5
10
12
15
16
18
20
22
24
26
28
31
0
2
4
6
8
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
6
11
13
14
17
19
21
23
25
27
29
30
1
3
5
7
9