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HEF4047BP,652

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
Nexperia
HEF4047B
Monostable/astable multivibrator
HEF4047B All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved.
Product data sheet Rev. 6 — 17 March 2017
10 / 22
11 Application information
Table 9. Functional connections
[1]
Pins connected toFunction
V
DD
V
SS
input pulse
Output pulse
from pins
Output period or pulse width
Astable multivibrator
Free running 4, 5, 6, 14 7, 8, 9, 12 - 10, 11, 13
True gating 4, 6, 14 7, 8, 9, 12 5 10, 11, 13
Complement gating 6, 14 5, 7, 8, 9, 12 4 10, 11, 13
at pins 10, 11; t
A
= 4.40 R
t
C
t
at pin 13; t
A
= 2.20 R
t
C
t
Monostable multivibrator
Positive edge-
triggering
4, 14 5, 6, 7, 9, 12 8 10, 11
Negative edge-
triggering
4, 8, 14 5, 7, 9, 12 6 10, 11
Retriggerable 4, 14 5, 6, 7, 9 8, 12 10, 11
External countdown
[2]
14 5, 6, 7,
8, 9, 12
- 10, 11
at pins 10, 11; t
M
= 2.48 R
t
C
t
[1] In all cases, external resistor between pins 2 and 3, external capacitor between pins 1 and 3.
[2] Input pulse to RESET of external counting chip: external counting chip output to pin 4.
Nexperia
HEF4047B
Monostable/astable multivibrator
HEF4047B All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved.
Product data sheet Rev. 6 — 17 March 2017
11 / 22
11.1 Astable mode design information
11.1.1 Unit-to-unit transfer voltage variations
The following analysis presents worst case variations from unit-to-unit as a function of
transfer voltage (V
TR
) shift for free running (astable) operation.
aaa-013285
OSCILLATOR
OUTPUT (pin 13)
O OUTPUT
(pin 10)
t
1
t
2
t
2
t
A
t
A
t
1
1
2
t
A
1
2
Figure 6. Astable mode waveforms
(1)
(2)
(3)
, where t
A
= astable mode pulse width; see Table 10.
Table 10. Values for astable mode pulse width (t
A
)
V
TR
t
A
Min Typ Max Min Typ
[1]
Max
V
DD
= 5 V or 10 V 0.3 × V
DD
0.5 × V
DD
0.7 × V
DD
4.71 R
t
C
t
4.40 R
t
C
t
4.71 R
t
C
t
V
DD
= 15 V 4 V 0.5 × V
DD
11 V 4.84 R
t
C
t
4.40 R
t
C
t
4.84 R
t
C
t
[1] Therefore if t
A
= 4.40 R
t
C
t
is used, the maximum variation is (+7.0%; -0.0%) at 10 V.
Nexperia
HEF4047B
Monostable/astable multivibrator
HEF4047B All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2017. All rights reserved.
Product data sheet Rev. 6 — 17 March 2017
12 / 22
11.1.2 Variations due to changes in V
DD
In addition to variations from unit-to-unit, the astable period may vary as a function of
frequency with respect to V
DD
. Typical variations are presented graphically in Figure 7
and Figure 8 with 10 V as a reference.
(1)T
amb
= 25 °C; f
o
= 10 kHz; C
t
= 100 pF; R
t
= 220 kΩ.
(2)T
amb
= 25 °C; f
o
= 5 kHz; C
t
= 100 pF; R
t
= 470 kΩ.
(3)T
amb
= 25 °C; f
o
= 1 kHz; C
t
= 1000 pF; R
t
= 220 kΩ.
Figure 7. Typical O and O period accuracy as a function of supply voltage; astable mode.
(1)T
amb
= 25 °C; f
o
= 500 kHz; C
t
= 10 pF; R
t
= 47 kΩ.
(2)T
amb
= 25 °C; f
o
= 225 kHz; C
t
= 100 pF; R
t
= 10 kΩ.
(3)T
amb
= 25 °C; f
o
= 100 kHz; C
t
= 100 pF; R
t
= 22 kΩ.
(4)T
amb
= 25 °C; f
o
= 50 kHz; C
t
= 100 pF; R
t
= 47 kΩ.
Figure 8. Typical O and O period accuracy as a function of supply voltage; astable mode.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

HEF4047BP,652

Mfr. #:
Buy HEF4047BP,652
Manufacturer:
NXP Semiconductors
Description:
Monostable Multivibrator MONO/ASTBL MLTVIBRTR
Lifecycle:
New from this manufacturer.
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