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74ABT16652 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
74ABT16652 Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Function Table
Inputs
Inputs/Outputs (Note 1)
Operating Mode
OEAB1 OEBA1 CPAB1 CPBA1 SAB1 SBA1 A0 thru A7 B0 thru B7
L
L
X
H
L
L
H
H
H
H
X
L
H or L
H or L
H or L
H or L
X
X
X
X
X
X
X Input
Input
Isolation
X
Store A and B Data
X Input
Not Specified Store A, Hold B
X Input
Output
Store A in Both Registers
X Not Specified Input
Hold A, Store B
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 H or L X
H
Store B Data to A Bus
H
H
X
X
L
X
Input
H
H H or L X
H
X
Output
Real-Time A Data to B Bus
Stored A Data to B Bus
H
L
H or L H or L H
H Output
Output
Stored A Data to B Bus and
Stored B Data to A Bus
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW to HIGH Clock Transition
Note 1: The data output functions may be enabled or disabled by various signals at OEAB or OEBA inputs. Data input functions are always enabled, i.e.,
data at the bus pins will be stored on every LOW to HIGH transition on the clock inputs. This also applies to data I/O (A and B: 8–15) and #2 control pins.
Logic Diagrams
Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays.
3
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