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CD4029BC Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. CD4029BC
Description  Presettable Binary/Decade Up/Down Counter
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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CD4029BC Datasheet(HTML) 1 Page - National Semiconductor (TI)

   
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TLF5960
February 1988
CD4029BMCD4029BC Presettable
BinaryDecade UpDown Counter
General Description
The CD4029BMCD4029BC is a presettable updown
counter which counts in either binary or decade mode de-
pending on the voltage level applied at binarydecade input
When binarydecade is at logical ‘‘1’’ the counter counts in
binary otherwise it counts in decade Similarly the counter
counts up when the updown input is at logical ‘‘1’’ and vice
versa
A logical ‘‘1’’ preset enable signal allows information at the
‘‘jam’’ inputs to preset the counter to any state asynchro-
nously with the clock The counter is advanced one count at
the positive-going edge of the clock if the carry in and pre-
set enable inputs are at logical ‘‘0’’ Advancement is inhibit-
ed when either or both of these two inputs is at logical ‘‘1’’
The carry out signal is normally at logical ‘‘1’’ state and goes
to logical ‘‘0’’ state when the counter reaches its maximum
count in the ‘‘up’’ mode or the minimum count in the ‘‘down’’
mode provided the carry input is at logical ‘‘0’’ state
All inputs are protected against static discharge by diode
clamps to both VDD and VSS
Features
Y
Wide supply voltage range
3V to 15V
Y
High noise immunity
045 VDD (typ)
Y
Low power
fan out of 2
TTL compatibility
driving 74L
or 1 driving 74LS
Y
Parallel jam inputs
Y
Binary or BCD decade updown counting
Logic Diagram
TLF5960 – 1
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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