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HCF4047B Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer HCF4047B
Beschreibung LOW POWER MONOSTABLE/ASTABLE MULTIVIBRATOR
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 12 Seiten
HCF4047B Datasheet, Funktion
HCF4047B
LOW POWER MONOSTABLE/ASTABLE MULTIVIBRATOR
s LOW POWER CONSUMPTION : SPECIAL
CMOS OSCILLATOR CONFIGURATION
s MONOSTABLE (one - shot) OR ASTABLE
(free-running) OPERATION
s TRUE AND COMPLEMENTED BUFFERED
OUTPUTS
s ONLY ONE EXTERNAL R AND C REQUIRED
s BUFFERED INPUTS
s QUIESCENT CURRENT SPECIFIED UP TO
20V
s STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERISTICS
s 5V, 10V AND 15V PARAMETRIC RATINGS
s INPUT LEAKAGE CURRENT
II = 100nA (MAX) AT VDD = 18V TA = 25°C
s 100% TESTED FOR QUIESCENT CURRENT
s MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTION
The HCF4047B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
The HCF4047B consist of a gatable astable
multivibrator with logic techniques incorporated to
DIP SOP
ORDER CODES
PACKAGE
TUBE
DIP
SOP
HCF4047BEY
HCF4047BM1
T&R
HCF4047M013TR
permit positive or negative edge-triggered
monostable multivibrator action with retriggering
and external counting options. Inputs include
+TRIGGER -TRIGGER, ASTABLE, ASTABLE,
RETRIGGER, and EXTERNAL RESET. Buffered
outputs are Q, Q and OSCILLATOR. In all modes
of operation, an external capacitor must be
connected between C-Timing and RC-Common
terminals, and an external resistor must be
connected between the R-Timing and
RC-Common terminals.
For operating modes see functional terminal
connections and application notes.
PIN CONNECTION
September 2001
1/12






HCF4047B Datasheet, Funktion
HCF4047B
DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb = 25°C, CL = 50pF, RL = 200K, tr = tf = 20 ns)
Symbol
Parameter
Test Condition
VDD (V)
Value (*)
Unit
Min. Typ. Max.
tPLH tPHL Propagation Delay Astable, Astable
Time
to Osc. Out
5
10
200 400
100 200
15 80 160
Astable, Astable
to Q, Q
5
10
350 700
175 350
15 125 250
+ or - Trigger to
Q, Q
5
10
500 1000
225 450 ns
15 150 300
Retrigger to Q, Q
5
300 600
10 150 300
15 100 200
External Reset
to Q, Q
5
10
250 500
100 200
15 70 140
tTHL tTLH Transition Time Osc. Out Q, Q
5
10
100 200
50 100 ns
15 40 80
tW Input Pulse Width + Trigger
- Trigger
5
10
200 400
80 160
15 50 100
Reset
5
100 200
10 50 100 ns
15 30 60
Retrigger
5
300 600
10 115 230
15 75 150
tr, tf Input Rise and Fall Time All Inputs
Q or Q Deviation from 50% Duty
Factor
5
10
15
5
10
15
Unlimited
µs
±0.5
±0.5
±0.1
±1
±1
±0.5
%
(*) Typical temperature coefficient for all VDD value is 0.3 %/°C.
APPLICATION INFORMATION
1 - CIRCUIT DESCRIPTION
Astable operation is enabled by a high level on the
ASTABLE input. The period of the square wave at
the Q and Q Outputs in this mode of operation is a
function of the external components employed.
"True" input pulses on the ASTABLE input or
"Complement" pulses on the ASTABLE input
allow the circuit to be used as a gatable
multivibrator. The OSCILLATOR output period will
be half of the Q terminal output in the astable
mode. However, a 50% duty cycle is not
guaranteed at this output. In the monostable
mode, positive-edge triggering is accomplished by
application of a leading-edge pulse to the
+TRIGGER input and a low level to the -TRIGGER
input. For negative-edge triggering, a trailing-edge
pulse is applied to the -TRIGGER and a high level
is applied to the +TRIGGER. Input pulses may be
of any duration relative to the output pulse. The
multivibrator can be retriggered (on the leading
edge only) by applying a common pulse to both
the RETRIGGER and +TRIGGER inputs. In this
mode the output pulse remains high as long as the
input pulse period is shorter than the period
determined by the RC components. An external
countdown option can be implemented by
6/12

6 Page









HCF4047B pdf, datenblatt
HCF4047B
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
© The ST logo is a registered trademark of STMicroelectronics
12/12
© 2001 STMicroelectronics - Printed in Italy - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
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© http://www.st.com

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