HCF4047 [ETC]
LOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR ; 低功耗单稳态/非稳态多谐振荡器
| 型号： | HCF4047 |
| 厂家： | 
ETC |
| 描述： | LOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR
|
| 文件： | 总12页 (文件大小：791K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HCF4047B
LOW POWER MONOSTABLE/ASTABLE MULTIVIBRATOR
■
■
■
LOW POWER CONSUMPTION : SPECIAL
CMOS OSCILLATOR CONFIGURATION
MONOSTABLE (one - shot) OR ASTABLE
(free-running) OPERATION
TRUE AND COMPLEMENTED BUFFERED
OUTPUTS
DIP
SOP
■
■
■
ONLY ONE EXTERNAL R AND C REQUIRED
BUFFERED INPUTS
QUIESCENT CURRENT SPECIFIED UP TO
20V
STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERISTICS
5V, 10V AND 15V PARAMETRIC RATINGS
INPUT LEAKAGE CURRENT
ORDER CODES
PACKAGE
TUBE
T & R
■
DIP
HCF4047BEY
HCF4047BM1
■
■
SOP
HCF4047M013TR
I = 100nA (MAX) AT V = 18V T = 25°C
100% TESTED FOR QUIESCENT CURRENT
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
I
DD
A
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
■
■
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
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
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
1
2
C
R
External Capacitor
External Resistor
RC COM- External Connection to (1)
3
4
MON
and (2)
Complement Astable
Pulse
ASTABLE
5
6
8
9
ASTABLE True Astable Pulse
-TRIGGER Negative Trigger Pulse
+TRIGGER Positive Trigger Pulse
EXT. RESET External Reset
RETRIG-
12
Retrigger Mode Pulse
GER
13
10,11
7
OSC. OUT Oscillator Output
Q, Q
Q Outputs
V
Negative Supply Voltage
Positive Supply Voltage
SS
V
14
DD
BLOCK DIAGRAM
2/12
HCF4047B
FUNCTIONAL TERMINAL CONNECTIONS
TERMINAL CONNECTIONS
OUTPUT
PULSE
FROM
OUTPUT PERIOD OR
PULSE WIDTH
FUNCTION*
Input Pulse
to
to V
to V
SS
DD
Astable Multivibrator
Free Running
4, 5, 6, 14
7, 8, 9, 12
-
10, 11, 13
t (10,11) = 4.40RC
A
True Gating
4, 6, 14
6, 14
7, 8, 9, 12
5
4
10, 11, 13
10, 11, 13
Complement Gating
5, 7, 8, 9, 12
t (13) = 2.20RC
A
Monostable Multivibrator
Positive - Edge Trigger
Negative - Edge Trigger
Retriggerable
4, 14
4, 8, 14
4, 14
5, 6, 7, 9, 12
5, 7, 9, 12
5, 6, 7, 9
8
6
10, 11
10, 11
10, 11
8, 12
t (10,11) = 2.48RC
M
External Countdown**
14
5, 6, 7, 8, 9,
12
-
10, 11
* In all cases external capacitor and resistor between pins, 1, 2 and 3 (see logic diagrams).
** Input pulse to Reset of External Counting Chip.
External Counting Chip Output to pin 4.
LOGIC DIAGRAM
3/12
HCF4047B
DETAIL FOR FLIP-FLOPS FF1 AND FF3 (a) AND FOR FLIP-FLOPS FF2 AND FF4 (b)
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
Supply Voltage
DC Input Voltage
DC Input Current
-0.5 to +22
V
V
DD
V
-0.5 to V + 0.5
I
DD
I
± 10
200
mA
mW
mW
°C
I
P
Power Dissipation per Package
Power Dissipation per Output Transistor
Operating Temperature
D
100
T
-55 to +125
op
T
Storage Temperature
-65 to +150
°C
stg
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to V pin voltage.
SS
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
Supply Voltage
3 to 20
0 to V
V
V
DD
V
Input Voltage
I
DD
T
Operating Temperature
-55 to 125
°C
op
4/12
HCF4047B
DC SPECIFICATIONS
Test Condition
|I | V
DD
Value
-40 to 85°C -55 to 125°C Unit
T
= 25°C
Symbol
Parameter
A
V
V
I
O
O
(V)
(V)
(µA) (V)
Min. Typ. Max. Min. Max. Min. Max.
I
Quiescent Current
0/5
0/10
0/15
0/20
0/5
5
0.01
0.01
0.01
0.02
1
2
30
60
30
60
L
10
15
20
µA
4
120
600
120
600
20
V
High Level Output
Voltage
<1
<1
<1
<1
<1
<1
<1
<1
5
4.95
9.95
4.95
9.95
4.95
9.95
OH
0/10
0/15
5/0
10
V
V
V
V
15 14.95
14.95
14.95
V
Low Level Output
Voltage
5
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
OL
10/0
15/0
10
15
V
High Level Input
Voltage
0.5/4.5
1/9
5
3.5
7
3.5
7
3.5
7
IH
10
15
5
1.5/13.5 <1
11
11
11
V
Low Level Input
Voltage
4.5/0.5
9/1
<1
<1
1.5
3
1.5
3
1.5
3
IL
10
15
5
13.5/1.5 <1
4
4
4
I
Output Drive
Current
0/5
0/5
2.5
4.6
9.5
13.5
0.4
0.5
1.5
<1
<1
<1
<1
<1
<1
<1
-1.36 -3.2
-1.15
-0.36
-0.9
-2.4
0.36
0.9
-1.1
-0.36
-0.9
-2.4
0.36
0.9
OH
5
-0.44
-1.1
-3.0
0.44
1.1
-1
-2.6
-6.8
1
mA
mA
0/10
0/15
0/5
10
15
5
I
Output Sink
Current
OL
0/10
0/15
10
15
2.6
6.8
3.0
2.4
2.4
I
Input Leakage
Current
I
-5
0/18
Any Input
Any Input
18
±0.1
±1
±1
µA
±10
C
Input Capacitance
5
7.5
pF
I
The Noise Margin for both "1" and "0" level is: 1V min. with V =5V, 2V min. with V =10V, 2.5V min. with V =15V
DD
DD
DD
5/12
HCF4047B
DYNAMIC ELECTRICAL CHARACTERISTICS (T
= 25°C, C = 50pF, R = 200KΩ, t = t = 20 ns)
amb
L
L
r
f
Test Condition
Value (*)
Unit
Symbol
Parameter
V
(V)
Min. Typ. Max.
DD
t
t
Propagation Delay Astable, Astable
5
200
100
80
400
200
160
700
350
250
PLH PHL
Time
to Osc. Out
10
15
5
Astable, Astable
to Q, Q
350
175
125
10
15
5
+ or - Trigger to
Q, Q
500 1000
10
15
5
225
150
300
150
100
250
100
70
450
300
600
300
200
500
200
140
200
100
80
ns
Retrigger to Q, Q
10
15
5
External Reset
to Q, Q
10
15
5
t
t
Transition Time Osc. Out Q, Q
100
50
THL TLH
10
15
5
ns
ns
40
t
Input Pulse Width + Trigger
- Trigger
200
80
400
160
100
200
100
60
W
10
15
5
50
Reset
Retrigger
100
50
10
15
5
30
300
115
75
600
230
150
10
15
5
t , t
Input Rise and Fall Time All Inputs
r
f
10
15
5
Unlimited
µs
Q or Q Deviation from 50% Duty
Factor
±0.5
±0.5
±1
±1
10
15
%
±0.1 ±0.5
(*) Typical temperature coefficient for all V value is 0.3 %/°C.
DD
APPLICATION INFORMATION
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
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
6/12
HCF4047B
coupling "Q" to an external "N" counter and
resetting the counter with the trigger pulse. The
counter output pulse is fed back to the ASTABLE
input and has a duration equal to N times the
period of the multivibrator. A high level on the
EXTERNAL RESET input assures no output pulse
during an "ON" power condition. This input can
also be activated to terminate the output pulse at
any time. In the monostable mode, a high-level or
power-on reset pulse, must be applied to the
EXTERNAL RESET whenever V is applied.
DD
2 - ASTABLE MODE
The following analysis presents worst-case
variations from unit-to-unit as a function of
transfer-voltage (VTR) shift (33% - 67% V ) for
DD
free-running (astable) operation.
ASTABLE MODE WAVEFORMS
V
TR
+ V
t = -RC In —————
1
V
DD
TR
V
- V
DD
TR
t = -RC In —————
2
2V - V
DD
TR
(V )(V - V )
TR
TR
DD
t = 2(t +t )= -2RC In ———————————
3
1
2
(V + V )(2V - V )
DD
TR
DD
TR
Typ : V = 0.5 V t = 4.40 RC
3 - MONOSTABLE MODE
TR
DD A
Min : V = 0.33 V t = 4.62 RC
The following analysis presents worst-case
variations from unit-to-unit as a function of
transfer-voltage (V ) shift (33% - 67% V ) for
TR
DD A
Max : V = 0.67 V t = 4.62 RC
TR
DD A
thus if t = 4.40 RC is used, the maximum
TR
DD
A
one-shot (monostable) operation.
variation will be (+ 5.0%, -0.0%)
In addition to variations from unit-to-unit, the
astable period may vary as a function of frequency
with respect to V and temperature.
DD
MONOSTABLE WAVEFORMS
V
2V
TR
t = -RC In ———
1
DD
V
- V
TR
DD
t = -RC In —————
2
2V - V
DD
TR
(V )(V - V )
TR
TR
DD
t = (t +t )= -RC In —————————
M
1
2
(2V - V )(2V )
DD
DD
TR
7/12
HCF4047B
Where tM = monostable mode pulse width. Values
for tM are as follows :
to extend the output-pulse duration, or to compare
the frequency of an input signal with that of the
internal oscillator. In the retrigger mode the input
pulse is applied to terminals 8 and 12, and the
output is taken from terminal 10 or 11. As shown in
fig.A normal monostable action is obtained when
one retrigger pulse is applied. Extended pulse
duration is obtained when more than one pulse is
Typ : V = 0.5 V
t
= 2.48 RC
t = 2.71 RC
TR
DD M
Min : V = 0.33 V
TR
DD M
Max : V = 0.67 V t = 2.48 RC
TR
DD M
Thus if t = 2.48 RC is used, the maximum
M
variation will be (+ 9.3%, - 0.0%).
Note : In the astable mode, the first positive half
cycle has a duration of T ; succeeding durations
M
applied. For two input pulses, t = t ’ + t + 2t .
RE
1
1
2
are t /2.
A
For more than two pulses, t
(Q OUTPUT)
RE
In addition to variations from unit to unit, the
monostable pulse width may vary as a function of
terminates at some variable time t after the
D
termination of the last retrigger pulse. t is variable
frequency with respect to V and temperature.
D
DD
because t
(Q OUTPUT) terminates after the
RE
second positive edge of the oscillator output
appears at flip-flop 4 (see logic diagram).
4 - RETRIGGER MODE
The HCF4047B can be used in the retrigger mode
FIGURE A : Retrigger-mode waveforms
5 - EXTERNAL COUNTER OPTION
A typical implementation is shown in fig. B. The
pulse duration at the output is
text = (N - 1) (t ) + (t + t /2)
Time t can be extended by any amount with the
A
M
A
M
use of external counting circuitry. Advantages
include digitally controlled pulse duration, small
timing capacitors for long time periods, and
extremely fast recovery time.
Where text = pulse duration of the circuitry, and N
is the number of counts used.
FIGURE B : Implementation of external counter option
8/12
HCF4047B
6 - POWER CONSUMPTION
The capacitor used in the circuit should be
non-polarized and have low leakage (i.e. the
parallel resistance of the capacitor should be an
order of magnitude greater than the external
resistor used). Three is no upper or lower limit for
either R or C value to maintain oscillation.
However, in consideration of accuracy, C must be
much larger than the inherent stray capacitance in
the system (unless this capacitance can be
measured and taken into account). R must be
much larger than the COS/MOS "ON" resistance
in series with it, which typically is hundreds of
ohms. In addition, with very large values of R,
some short-term instability with respect to time
may be noted.
In the standby mode (Monostable or Astable),
power dissipation will be a function of leakage
current in the circuit, as shown in the static
electrical characteristics. For dynamic operation,
the power needed to charge the external timing
capacitor C is given by the following formula :
Astable Mode :
2
P = 2CV f. (Output at Pin 13)
2
P = 4CV f. (Output at Pin 10 and 11)
2
(2.9CV ) (Duty Cycle)
Monostable Mode : P = ——————————
T
(Output at Pin 10 and 11)
The circuit is designed so that most of the total
power is consumed in the external components. In
practice, the lower the values of frequency and
voltage used, the closer the actual power
dissipation will be to the calculated value.
Because the power dissipation does not depend
on R, a design for minimum power dissipation
would be a small value of C. The value of R would
depend on the desired period (within the
limitations discussed above).
The recommended values for these components
to maintain agreement with previously calculated
formulas without trimming should be :
C > 100pF, up to any practical value, for astable
modes ;
C > 1000pF, up to any practical value, for
monostable modes.
7 - TIMING-COMPONENT LIMITATIONS
10KΩ< R < 1MΩ.
TEST CIRCUIT
C
R
R
= 50pF or equivalent (includes jig and probe capacitance)
L
L
T
= 200KΩ
= Z
of pulse generator (typically 50Ω)
OUT
9/12
HCF4047B
Plastic DIP-14 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
0.51
1.39
TYP
MAX.
MIN.
0.020
0.055
MAX.
a1
B
b
1.65
0.065
0.5
0.020
0.010
b1
D
E
e
0.25
20
0.787
8.5
2.54
15.24
0.335
0.100
0.600
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
2.54
0.050
0.100
P001A
10/12
HCF4047B
SO-14 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.75
0.2
MIN.
MAX.
0.068
0.007
0.064
0.018
0.010
A
a1
a2
b
0.1
0.003
1.65
0.46
0.25
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45° (typ.)
8.55
5.8
8.75
6.2
0.336
0.228
0.344
0.244
E
e
1.27
7.62
0.050
0.300
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.026
G
L
1.27
0.68
M
S
8° (max.)
PO13G
11/12
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.
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