74AC11652_11 Datasheet, PDF (3/11 Pages) Texas Instruments – OCTAL BUS TRANSCEIVER AND REGISTERS WITH 3-STATE OUTPUTS

74AC11652
OCTAL BUS TRANSCEIVER AND REGISTERS
WITH 3-STATE OUTPUTS
SCAS088A - DECEMBER 1989 - REVISED APRIL 1996
FUNCTION TABLE
OEAB
OEBA
INPUTS
CLKAB CLKBA
SAB SBA
DATA I/O^†
A1 THRU A8
B1 THRU B8
OPERATION OR FUNCTION
L
H
L
L
X
X
Input
Input
Isolation
L
H
↑
↑
X
X
Input
Input
Store A and B data
X
H
↑
H
H
↑
L
X
L
L
X
X
Input
Unspecified^‡
↑
X^‡
X
Input
Output
↑
X
X
Unspecified^‡
Input
Store A, hold B
Store A in both registers
Hold A, store B
L
L
↑
↑
X
X^‡
Output
Input
Store B in both registers
L
L
X
X
X
L
Output
Input
Real-time B data to A bus
L
L
X
L
X
H
Output
Input
Stored B data to A bus
H
H
X
X
L
X
Input
Output
Real-time A data to B bus
H
H
L
X
H
X
Input
Output
Stored A data to B bus
H
L
L
L
H
H
Output
Output
Stored A data to B bus and
stored B data to A bus
† _{The data output functions may be enabled or disabled by a variety of level combinations at the OEAB or OEBA inputs. Data input functions are}
always enabled; i.e., data at the bus pins is stored on every low-to-high transition on the clock inputs.
‡ _{Select control = L; clocks can occur simultaneously.}
Select control = H; clocks must be staggered to load both registers.
logic symbol^§
14
OEBA
1
OEAB
16
CLKBA
15
SBA
28
CLKAB
27
SAB
EN1 [BA]
EN2 [AB]
C4
G5
C6
G7
2
A1
3
A2
4
A3
5
A4
10
A5
11
A6
12
A7
13
A8
≥1
1
6D 7
17
5 4D
51
≥1
2
26
B1
25
B2
24
B3
23
B4
20
B5
19
B6
18
B7
17
B8
§ _{This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.}
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