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參數(shù)資料
| 型號： | HEF4047BP |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 振蕩器 |
| 英文描述： | Monostable-astable multivibrator |
| 封裝： | HEF4047BP<SOT27-1 (DIP14)|<<http://www.nxp.com/packages/SOT27-1.html<1<Always Pb-free,;HEF4047BT<SOT108-1 (SO14)|<<http://www.nxp.com/packages/SOT108-1.html<1<week |
| 文件頁數(shù)： | 13/15頁 |
| 文件大小： | 274K |
| 代理商： | HEF4047BP |
January 1995
13
Philips Semiconductors
Product specification
Monostable/astable multivibrator
HEF4047B
MSI
5. Timing component limitations
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).
There is no upper or lower limit for either R
t
or C
t
value to maintain oscillation.
However, in consideration of accuracy, C
t
must be much larger than the inherent stray capacitance in the system (unless
this capacitance can be measured and taken into account).
R
t
must be much larger than the LOCMOS ‘ON’ resistance in series with it, which typically is hundreds of ohms.
The recommended values for R
t
and C
t
to maintain agreement with previously calculated formulae without trimming
should be:
C
t
≥
100 pF, up to any practical value,
10 k
≤
R
t
≤
1 M
.
6. Power consumption
In the standby mode (monostable or astable), power dissipation will be a function of leakage current in the circuit.
For dynamic operation, the power needed to charge the external timing capacitor C
t
is given by the following formulae:
Because the power dissipation does not depend on R
t
, a design for minimum power dissipation would be a small value
of C
t
. The value of R would depend on the desired period (within the limitations discussed previously).
Typical power consumption in astable mode is shown in Figs 10, 11 and 12.
Astable mode:
P = 2 C
t
V
2
f (f at output pin 13)
P = 4 C
t
V
2
f (f at output pins 10 and 11)
Monostable mode:
P =
2 9 C
V
2
--------------------------------------------------------------------
duty cycle
(
)
T
f at output pins 10 and 11
(
)
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PDF描述 |
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| HEF4047BT | Monostable-astable multivibrator |
| HEF4049BP | Hex inverting buffers |
| HEF4049BT | Hex inverting buffers |
| HEF4050BT | Hex non-inverting buffers |
| HEF4050BP | Hex non-inverting buffers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HEF4047BP,652 | 功能描述:單穩(wěn)態(tài)多諧振蕩器 MONO/ASTBL MLTVIBRTR RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| HEF4047BP652 | 制造商:NXP Semiconductors 功能描述:IC MONOSTABLE / ASTABLE MULTIVIBRATOR |
| HEF4047BPN | 制造商:PHI 功能描述:4047 |
| HEF4047BT | 制造商:NXP Semiconductors 功能描述:HEF4000 Monostable/Astable Multivibrator Bulk 制造商:NXP Semiconductors 功能描述:IC 4000 LOCMOS SMD 4047 SOIC14 制造商:NXP Semiconductors 功能描述:IC, 4000 LOCMOS, SMD, 4047, SOIC14 制造商:NXP Semiconductors 功能描述:IC, 4000 LOCMOS, SMD, 4047, SOIC14; Multivibrator Type:Monostable / Astable; Output Current:2.4mA; Propagation Delay:50ns; Logic Case Style:SOIC; No. of Pins:14; Supply Voltage Min:4.5V; Supply Voltage Max:15.5V; Operating ;RoHS Compliant: Yes |
| HEF4047BT,652 | 功能描述:單穩(wěn)態(tài)多諧振蕩器 MONO/ASTBL MLTVIBRTR RoHS:否 制造商:Texas Instruments 每芯片元件:1 邏輯系列:LVC 邏輯類型:Monostable Multivibrator 封裝 / 箱體:SSOP-8 傳播延遲時間:18.6 ns 高電平輸出電流:- 32 mA 低電平輸出電流:32 mA 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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