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SN54LS569A Datasheet(PDF) 2 Page - Motorola, Inc

Part No. SN54LS569A
Description  FOUR-BIT UP/DOWN COUNTER WITH THREE-STATE OUTPUTS
Download  8 Pages
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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SN54LS569A Datasheet(HTML) 2 Page - Motorola, Inc

   
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5-574
FAST AND LS TTL DATA
SN54/74LS569A
FUNCTION TABLE
INPUTS
OUTPUTS
CP
D
C
B
A
LOAD
CET
CEP
U/D
ACLR
SCLR
OE
RCO
CCO
YD
YC
YB
YA
X
X
X
X
H
L
L
H
H
H
L
A/R
A/R
(QT – CP) + 1
Count Up
X
X
X
X
H
L
L
L
H
H
L
A/R
A/R
(QT – CP) – 1
Count Down
X
X
X
X
H
H
X
X
H
H
L
H
H
NC
NC
NC
NC
Count Inhibit
X
X
X
X
H
L
H
X
H
H
L
A/R
H
NC
NC
NC
NC
Count Inhibit
X
X
X
X
X
L
L
H
H
H
L
L
H
H
H
H
Overflow
X
X
X
X
X
L
H
H
H
H
L
L
H
H
H
H
H
Overflow
X
X
X
X
X
H
X
H
H
H
L
H
H
H
H
H
H
Overflow Inhibit
X
X
X
X
X
L
L
L
H
H
L
L
L
L
L
L
Underflow
X
X
X
X
X
L
H
L
H
H
L
L
H
L
L
L
L
Underflow
X
X
X
X
X
H
X
L
H
H
L
H
H
L
L
L
L
Underflow Inhibit
L
H
L
H
L
X
X
X
H
H
L
H
H
L
H
L
H
Load Example
X
X
X
X
X
H
X
H
H
L
L
H
H
L
L
L
L
Clear (Synchronous)
X
X
X
X
X
L
L
L
H
L
L
L
L
L
L
L
Clear (Synchronous)
X
X
X
X
X
L
H
L
H
L
L
L
H
L
L
L
L
Clear (Synchronous)
X
X
X
X
X
H
X
L
H
L
L
H
H
L
L
L
L
Clear (Synchronous)
X
X
X
X
X
X
X
X
H
L
X
L
H
H
L
L
L
L
Asynchronous Clear
X
X
X
X
X
L
L
L
L
X
L
L
L
L
L
L
Asynchronous Clear
X
X
X
X
X
X
L
H
L
L
X
L
L
H
L
L
L
L
Asynchronous Clear
X
X
X
X
X
X
H
X
L
L
X
L
H
H
L
L
L
L
Asynchronous Clear
X
X
X
X
X
X
X
X
X
X
X
H
X
X
Hi-Z
Output Disabled
(QT — CP) = Output state prior to clock edge
A/R = Assumes required output state;
X = Don’t care
NC = No change
High except during Overflow and Underflow
LOGIC DIAGRAM
OE
ACLR
A
B
C
SCLR
LOAD
CEP
CET
CP
U/D
YA
YB
YC
YD
RCO
CCO
*
*
*
*
D
D
R
CP
Q
Q
*


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