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CD4047BC Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # CD4047BC
Description  Low Power Monostable/Astable Multivibrator
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

CD4047BC Datasheet(HTML) 1 Page - National Semiconductor (TI)

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TLF5969
October 1993
CD4047BMCD4047BC Low Power
MonostableAstable Multivibrator
General Description
CD4047B is capable of operating in either the monostable
or astable mode It requires an external capacitor (between
pins 1 and 3) and an external resistor (between pins 2 and
3) to determine the output pulse width in the monostable
mode and the output frequency in the astable mode
Astable operation is enabled by a high level on the astable
input or low level on the astable input The output frequency
(at 50% duty cycle) at Q and Q outputs is determined by the
timing components A frequency twice that of Q is available
at the Oscillator Output a 50% duty cycle is not guaranteed
Monostable operation is obtained when the device is trig-
gered by low-to-high transition at a trigger input or high-to-
low transition at b trigger input The device can be retrig-
gered by applying a simultaneous low-to-high transition to
both the a trigger and retrigger inputs
A high level on Reset input resets the outputs Q to low Q to
high
Features
Y
Wide supply voltage range
30V to 15V
Y
High noise immunity
045 VDD (typ)
Y
Low power TTL
Fan out of 2 driving 74L
compatibility
or 1 driving 74LS
SPECIAL FEATURES
Y
Low power consumption special CMOS oscillator con-
figuration
Y
Monostable (one-shot) or astable (free-running) opera-
tion
Y
True and complemented buffered outputs
Y
Only one external R and C required
MONOSTABLE MULTIVIBRATOR FEATURES
Y
Positive- or negative-edge trigger
Y
Output pulse width independent of trigger pulse dura-
tion
Y
Retriggerable option for pulse width expansion
Y
Long pulse widths possible using small RC components
by means of external counter provision
Y
Fast recovery time essentially independent of pulse
width
Y
Pulse-width accuracy maintained at duty cycles ap-
proaching 100%
ASTABLE MULTIVIBRATOR FEATURES
Y
Free-running or gatable operating modes
Y
50% duty cycle
Y
Oscillator output available
Y
Good astable frequency stability
typical
e
g
2% a 003% C
100 kHz
frequency
e
g
05% a 0015% C
10 kHz
deviation
(circuits trimmed to frequency
VDD e 10V g10%)
Applications
Y
Frequency discriminators
Y
Timing circuits
Y
Time-delay applications
Y
Envelope detection
Y
Frequency multiplication
Y
Frequency division
Block and Connection Diagrams
TLF5969 – 1
Dual-In-Line Package
TLF5969 – 2
Top View
Order Number CD4047B
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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