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CD74HC652 Datasheet(PDF) 3 Page - Texas Instruments

Part No. CD74HC652
Description  High-Speed CMOS Logic Octal-Bus Transceiver/Registers, Three-State
Download  12 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC652 Datasheet(HTML) 3 Page - Texas Instruments

 
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Functional Diagram
FUNCTION TABLE
INPUTS
DATA I/O
OPERATION OR FUNCTION
OEAB
OEBA
CAB
CBA
SAB
SBA
A0 THRU A7
B0 THRU B7
651
652
L
H
H or L
H or L
X
X
Input
Input
Isolation (Note 3)
Isolation (Note 3)
LH
↑↑
X
X
Store A and B Data
Store A and B Data
XH
H or L
X
X
Input
Unspecified
(Note 4)
Store A, Hold B
Store A, Hold B
HH
↑↑
X
(Note 5)
X
Input
Output
Store A in Both
Registers
Store A in Both
Registers
L
X
H or L
X
X
Unspecified
(Note 4)
Input
Hold A, Store B
Hold A, Store B
LL
↑↑
XX
(Note 5)
Output
Input
Store B in Both
Registers
Store B in Both
Registers
L
L
X
X
X
L
Output
Input
Real-Time B Data to
A Bus
Real-Time B Data to
A Bus
L
L
X
H or L
X
H
Stored B Data to A
Bus
Stored B Data to A
Bus
20
19
18
17
15
13
14
16
4
B0
B1
B2
B3
B4
B5
B6
B7
OEBA
OEAB
21
3
6
11
5
7
8
9
10
A0
A1
A2
A3
A4
A5
A6
A7
1
23
2
22
CAB CLOCK
CBA CLOCK
SAB SOURCE
SBA SOURCE
GND = PIN 12
VCC = PIN 24
B
DATA
PORT
A
DATA
PORT
FLIP-FLOP
CLOCKS
DATA
SOURCE
SELECTION
INPUTS


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