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74HC193 Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. 74HC193
Description  Presettable synchronous 4-bit binary up/down counter
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74HC193 Datasheet(HTML) 5 Page - NXP Semiconductors

 
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December 1990
5
Philips Semiconductors
Product specification
Presettable synchronous 4-bit binary
up/down counter
74HC/HCT193
FUNCTION TABLE
Notes
1. H
= HIGH voltage level
L
= LOW voltage level
X
= don’t care
= LOW-to-HIGH clock transition
2. TCU =CPU at terminal count up (HHHH)
3. TCD =CPD at terminal count down (LLLL)
OPERATING MODE
INPUTS
OUTPUTS
MR
PL
CPU CPD D0
D1
D2
D3
Q0
Q1
Q2
Q3 TCU
TCD
reset (clear)
H
H
X
X
X
X
L
H
X
X
X
X
X
X
X
X
L
L
L
L
L
L
L
L
H
H
L
H
parallel load
L
L
L
L
L
L
L
L
X
X
L
H
L
H
X
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
H
H
L
H
L
H
H
H
count up
L
H
H
X
X
X
X
count up
H(2)
H
count down
L
H
H
X
X
X
X
count down
H
H(3)
Fig.4 Functional diagram.


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