74ABT657D Philips Semiconductors, 74ABT657D Datasheet - Page 3

• Manufacturer Part Number: 74ABT657D
• Description: Octal transceiver with parity generator/checker 3-State
• Manufacturer: Philips Semiconductors

Philips Semiconductors
LOGIC SYMBOL
FUNCTION TABLE
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance ”off” state
1995 Dec 11
Octal transceiver with parity generator/checker
(3-State)
24
11
1
NUMBER OF HIGH INPUTS
T/R
OE
ODD/EVEN
A0 A1 A2 A3 A4 A5 A6 A7
B0 B1 B2 B3
23 22 21 20 17 16 15 14
2
0, 2, 4, 6, 8
Don’t care
1, 3, 5, 7
3
4
5
B4 B5 B6 B7
6
8
9
ERROR
PARITY
10
13
12
SA00182
OE
H
L
L
L
L
L
L
L
L
L
L
L
L
3
INPUTS
T/R
H
H
H
H
X
L
L
L
L
L
L
L
L
LOGIC SYMBOL (IEEE/IEC)
ODD/EVEN
H
H
H
H
H
H
X
L
L
L
L
L
L
24
11
10
1
2
3
4
5
6
8
9
OUTPUT
0
1
G3[EVEN]
G4[ODD]
PARITY
INPUT/
0
H
H
H
H
H
H
M
L
L
L
L
L
L
Z
2K
0
2
0 BUS B TO A
1 BUS A TO B
2 HIGH Z
ERROR
1,3[EVEN]
0,3[EVEN
1,4[ODD]
Z
Z
H
H
Z
Z
H
H
Z
0,4]ODD
L
L
L
L
=
2
OUTPUTS
74ABT657
OUTPUTS MODE
Product specification
13
12
23
22
21
20
17
16
15
14
Transmit
Transmit
Transmit
Transmit
Receive
Receive
Receive
Receive
Receive
Receive
Receive
Receive
3-State
SA00194