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NE556 数据表(PDF) 5 Page - STMicroelectronics

部件名 NE556
功能描述  GENERAL PURPOSE DUAL BIPOLAR TIMERS
PDF  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

NE556 数据表(HTML) 5 Page - STMicroelectronics

  NE556 Datasheet HTML 1Page - STMicroelectronics NE556 Datasheet HTML 2Page - STMicroelectronics NE556 Datasheet HTML 3Page - STMicroelectronics NE556 Datasheet HTML 4Page - STMicroelectronics NE556 Datasheet HTML 5Page - STMicroelectronics NE556 Datasheet HTML 6Page - STMicroelectronics NE556 Datasheet HTML 7Page - STMicroelectronics NE556 Datasheet HTML 8Page - STMicroelectronics  
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background image
NE556-SA556-SE556
5/8
Figure 7 : High Output Voltage Drop versus
Output
Figure 8 : Delay Time versus Supply Voltage
Figure 9 : Propagation Delay versus Voltage
Level of Trigger Value
TYPICAL APPLICATION
50% DUTY CYCLE OSCILLATOR
t1 = 0.693 RA.C
PULSE WIDTH MODULATOR
Output
R
C
1/2
NE556
SE556
6
4
5
7
3
2
1
14
A
(8)
(10)
(9)
(11)
(12)
VCC
51kW
(13)
22kW
Rs
0.01nF
t2 = [(RARB)/(RA+RB)]CLn
RB
2
RA
–
2
RB
RA
–
---------------------------
f =
t1
t1
t2
+
-----------------
RB <
1
2
--- RA ti
t2
t1
Output
R
C
1/2
NE556
SE556
6
4
5
7
3
2
1
14
A
(8)
(10)
(9)
(11)
(12)
VCC
(13)
Trigger
MODULATION
INPUT



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