74ABT652AD Philips Semiconductors, 74ABT652AD Datasheet - Page 2

• Manufacturer Part Number: 74ABT652AD
• Description: Octal transceiver/register/ non-inverting 3-State
• Manufacturer: Philips Semiconductors

Philips Semiconductors
LOGIC SYMBOL
FUNCTION TABLE
H = High voltage level
L = Low voltage level
X = Don’t care
*
**
1995 Apr 19
OEAB
Octal transceiver/register, non-inverting (3-State)
= Low-to-High clock transition
H
H
H
H
L
L
X
L
L
L
L
The data output function may be enabled or disabled by various signals at the OEBA and OEAB inputs. Data input functions are always
enabled, i.e., data at the bus pins will be stored on every Low-to-High transition of the clock.
If both Select controls (SAB and SBA) are Low, then clocks can occur simultaneously. If either Select control is High, the clocks must be
staggered in order to load both registers.
23
22
2
1
OEBA
H
H
H
H
X
H
H
L
L
L
L
CPBA
SBA
SAB
CPAB
A0
B0
20
4
A1
B1
19
CPAB
H or L
H or L
H or L
H or L
5
INPUTS
X
X
X
A2
B2
18
6
A3
B3
17
7
A4
B4
CPBA
16
H or L
H or L
H or L
H or L
8
X
X
X
A5
B5
15
9
A6
B6
10
14
OEAB
OEBA
SAB
11
A7
B7
13
**
H
H
X
X
X
X
X
X
X
L
SBA
**
21
X
X
X
X
X
H
X
X
H
L
SA00095
3
Unspecified
output*
Output
Output
Input
Input
Input
An
2
DATA I/O
LOGIC SYMBOL (IEEE/IEC)
Unspecified
output*
Output
Output
Input
Input
Input
Bn
10
22
21
23
11
1
2
4
5
6
7
8
9
3
6D
1
EN1 [BA]
EN2 [AB]
G5
G7
1
C4
C6
1
Real time B data to A bus
Real time A data to B bus
Store A in both registers
Store B in both registers
7
7
Stored B data to A bus
Stored A data to B bus
Stored B data to A bus
Store A data to B bus
OPERATING MODE
OPERATING MODE
Store A and B data
Store A, Hold B
Hold A, Store B
5
5 1
1
Isolation
2
4D
74ABT652A
Product specification
19
18
17
16
15
14
13
20
SA00096