Sony BVW-55 Maintenance Manual page 557

[|IC|]
74ACT244SJ (NS)
74ACT244SJX
SN74HC244APW-E05 (TI)
SN74HCT244APW-E05 (TI)
TC74VHC244FT(EL) (TOSHIBA)
TC74VHCT244AFT(EL) (TOSHIBA)
BUS BUFFER WITH 3-STATE OUTPUTS
—TOP VIEW—
V G2
DD
20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8
G1
2
4
6
8
2 18
G
4 16
6 14 1
8 12
11 9
OR
13 7
15 5
17 3
11
G1 G2
13
15
1 19
17
G
19
74LCX125MTCX (NS)
SN74HC125APW-E05 (TI)
TC74VHC125FT(EL) (TOSHIBA)
C-MOS BUS BUFFER GATES WITH 3-STATE OUTPUT
—TOP VIEW—
14 13 12 11 10 9 8
V
DD
GND
1 2 3 4 5 6 7
BVW-55
12 11
A Y = A Y
G G
G A Y
0 0 0
0 1 1
1 x HI-Z
9 10
0 : LOW LEVEL
GND
1 : HIGH LEVEL
x : DON'T CARE
18
HI-Z : HIGH IMPEDANCE
16
14
12
9
7
5
3
G
A Y
G A Y
0 0 0
0 1 1
1 x HI-Z
0 : LOW LEVEL
1 : HIGH LEVEL
x : DON'T CARE
HI-Z : HIGH IMPEDANCE
74LCX245MTCX (NS)
SN74HCT245APW-E05 (TI)
TC74VHC245FT(EL) (TOSHIBA)
TC74VHCT245AFT(EL) (TOSHIBA)
OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
—TOP VIEW—
2
DIR 1 20
IN V
DD 3
4
G
A1 2 19
IN
5
6
A2 3 18 B1
7
8
A3 4 17 B2
9
DIR
A4 5 16 B3
1
G
A5 6 15 B4
0
0
A6 7 14 B5
1
A7 8 13 B6
0 : LOW LEVEL
1 : HIGH LEVEL
A8 9 12 B7
x : DON'T CARE
HI-Z : HIGH IMPEDANCE
10 GND 11 B8
B1 B2 B3
18 17 16
19
G
1
DIR
2 3 4
A1 A2 A3
74LVX3245QSCX (NS)
74LVX4245QSCX (NS)
C-MOS 8-BIT DUAL SUPPLY VOLTAGE TRANSLATING TRANSCEIVER
—TOP VIEW—
3
1 V A V B 24
DD DD 4
5
DIR 2 V B 23
DD
6
7
EN
A1 3 22
8
9
A2 4 21 B1
10
DIR
A3 5 20 B2
2
A4 6 19 B3
EN DIR
A5 7 18 B4 0 0
0 1
A6 8 17 B5 1 x
0 : LOW LEVEL
A7 9 16 B6
1 : HIGH LEVEL
HI-Z : HIGH IMPEDANCE
A8 10 15 B7
x : DON'T CARE
11 GND 14 B8
12 GND GND 13
B1 B2 B3
21 20 19
22
EN
2
DIR
3 4 5
A1 A2 A3
18
DIR
17
16
15
A B
14
13
DIR
12
11
G
19
DIR OPERATION
0 B to A
1 A to B
x HI-Z
B4 B5 B6 B7 B8
15 14 13 12 11
5 6 7 8 9
A4 A5 A6 A7 A8
21
20
19
18
17
16
15
14
EN
22
OUTPUT
B TO A
A TO B
HI-Z
B4 B5 B6 B7 B8
18 17 16 15 14
6 7 8 9 10
A4 A5 A6 A7 A8
IC
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