74ABT646A Philips Semiconductors, 74ABT646A Datasheet - Page 3

• Manufacturer Part Number: 74ABT646A
• Description: Octal bus transceiver/register 3-State
• Manufacturer: Philips Semiconductors

Philips Semiconductors
LOGIC SYMBOL
1998 Feb 17
Octal bus transceiver/register (3-State)
OE
L
A
REAL TIME BUS TRANSFER
DIR CPAB CPBA SAB SBA
L
21
23
22
BUS B TO BUS A
1
2
3
X
DIR
CPBA
SBA
OE
X
CPAB
SAB
A0
B0
20
4
A1
B1
19
5
X
A2
B2
18
6
B
L
A3
B3
17
7
A4
B4
16
8
OE
L
A5
B5
15
A
9
REAL TIME BUS TRANSFER
DIR CPAB CPBA SAB SBA
A6
B6
10
14
SA00083
H
BUS A TO BUS B
A7
B7
13
11
X
X
L
B
X
3
LOGIC SYMBOL (IEEE/IEC)
OE
L
L
H
A
DIR CPAB CPBA SAB SBA
H
L
X
A, B, OR A AND B
STORAGE FROM
X
23
10
21
22
11
X
2
1
4
5
6
7
8
9
3
X
X
X
B
X
X
X
5D
1
G3
3EN1 [BA]
3EN2 [AB]
G6
G7
w1
1
C4
C5
7
7
OE
L
L
w1
6
6 1
A
TRANSFER STORED DATA
2
DIR CPAB CPBA SAB SBA
4D
H
L
74ABT646A
H or L
TO A OR B
X
SA00084
Product specification
H or L
X
19
18
17
16
15
14
13
20
X
H
SA00085
B
H
X