|
|
PDF HEF4047B Data sheet ( Hoja de datos )
| Número de pieza | HEF4047B | |
| Descripción | Monostable/astable multivibrator | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HEF4047B (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
HEF4047B
Monostable/astable multivibrator
Rev. 4 — 15 September 2014
Product data sheet
1. General description
The HEF4047B consists of a gatable astable multivibrator incorporating logic techniques
to permit positive or negative edge-triggered monostable multivibrator action with
retriggering and external counting options.
Inputs include +TRIGGER, TRIGGER, ASTABLE, ASTABLE, RETRIGGER and MR
(master reset). Buffered outputs are O, O and OSCILLATOR OUTPUT. In all modes of
operation an external capacitor (Ct) must be connected between CTC and RCTC, and an
external resistor (Rt) must be connected between RTC and RCTC.
A HIGH level on the ASTABLE input enables astable operation. The period of the square
wave at O and O outputs is a function of the external components employed. ‘True’ input
pulses on the ASTABLE or ‘complement’ pulses on the ASTABLE input, allow the circuit to
be used as a gatable multivibrator. The OSCILLATOR OUTPUT period is half of the O
output in the astable mode. However, a 50% duty factor is not guaranteed at this output.
In the monostable mode, positive edge-triggering is accomplished by applying 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 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 count down option implements coupling O 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 MR 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 MR, whenever VDD is
applied.
2. Features and benefits
2.1 General
Monostable (one-shot) or astable (free-running) operation
True and complemented buffered outputs
Only one external resistor and capacitor required
1 page  
NXP Semiconductors
HEF4047B
Monostable/astable multivibrator
7. Recommended operating conditions
Table 4.
Symbol
VDD
VI
Tamb
t/V
Operating conditions
Parameter
supply voltage
input voltage
ambient temperature
input transition rise and fall
rate
Conditions
in free air
VDD = 5 V
VDD = 10 V
VDD = 15 V
8. Static characteristics
Min Max Unit
3 15 V
0
VDD
V
40 +85 C
- 3.75 s/V
- 0.5 s/V
- 0.08 s/V
Table 5. Static characteristics
VSS = 0 V; VI = VSS or VDD unless otherwise specified.
Symbol Parameter
Conditions
VDD
VIH HIGH-level input voltage IO < 1 A
5V
10 V
15 V
VIL LOW-level input voltage IO < 1 A
5V
10 V
15 V
VOH HIGH-level output voltage IO < 1 A
5V
10 V
15 V
VOL LOW-level output voltage IO < 1 A
5V
10 V
15 V
IOH HIGH-level output current VO = 2.5 V
5V
VO = 4.6 V
5V
VO = 9.5 V
10 V
VO = 13.5 V
15 V
IOL LOW-level output current VO = 0.4 V
5V
VO = 0.5 V
10 V
VO = 1.5 V
15 V
II input leakage current
15 V
output transistor
15 V
OFF; pin 3 at VDD or
VSS
IDD supply current
IO = 0 A
5V
10 V
15 V
CI input capacitance
-
Tamb = 40 C Tamb = 25 C Tamb = 85 C Unit
Min Max Min Max Min Max
3.5 - 3.5 - 3.5 - V
7.0 - 7.0 - 7.0 - V
11.0 - 11.0 - 11.0 - V
- 1.5 - 1.5 - 1.5 V
- 3.0 - 3.0 - 3.0 V
- 4.0 - 4.0 - 4.0 V
4.95 - 4.95 - 4.95 - V
9.95 - 9.95 - 9.95 - V
14.95 - 14.95 - 14.95 - V
- 0.05 - 0.05 - 0.05 V
- 0.05 - 0.05 - 0.05 V
- 0.05 - 0.05 - 0.05 V
- 1.7 - 1.4 - 1.1 mA
- 0.52 - 0.44 - 0.36 mA
- 1.3 - 1.1 - 0.9 mA
- 3.6 - 3.0 - 2.4 mA
0.52 - 0.44 - 0.36 - mA
1.3 - 1.1 - 0.9 - mA
3.6 - 3.0 - 2.4 - mA
- 0.3 - 0.3 - 1.0 A
- 0.3 - 0.3 - 1.0 A
- 20 - 20 - 150 A
- 40 - 40 - 300 A
- 80 - 80 - 600 A
- - - 7.5 - - pF
HEF4047B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
5 of 21
5 Page 
NXP Semiconductors
HEF4047B
Monostable/astable multivibrator
11.2 Monostable mode design information
The following analysis presents worst case variations from unit-to-unit as a function of
transfer voltage (VTR) shift for one-shot (monostable) operation.
75,**(5
SLQ
26&,//$725
287387 SLQ
2287387
SLQ
W
W
W0
Fig 9. Monostable waveforms.
W
W
W0
DDD
t1'
=
–RtCt
In ---V----T---R---
2VDD
tM = t1' + t2
tM
=
–RtCt
In -------V----T--R--------V----D----D-----–----V----T---R-------
2VDD – VTR2VDD
(4)
(5)
(6)
, where tM = monostable mode pulse width; see table Table 11.
Table 11.
Values for monostable mode pulse width (tM)
VTR
Min Typ Max
Min
tM
Typ[1]
Max
VDD = 5 V or 10 V
VDD = 15 V
0.3 VDD 0.5 VDD 0.7 VDD
4 V 0.5 VDD
11 V
2.78 RtCt
2.88 RtCt
2.48 RtCt
2.48 RtCt
2.52 RtCt
2.56 RtCt
[1] In the astable mode, the first positive half cycle has a duration of tM: succeeding durations are 1⁄2 tA.
Therefore if tM = 2.48 RtCt is used, the maximum variation is (+12%; 0.0%) at 10 V.
HEF4047B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 15 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
11 of 21
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet HEF4047B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HEF4047B | Monostable/astable multivibrator | NXP Semiconductors |
| HEF4047B | Monostable/astable multivibrator |  Philips |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |