công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

LM555CN bảng dữ liệu(PDF) 5 Page - Fairchild Semiconductor

tên linh kiện LM555CN
Giải thích chi tiết về linh kiện  Single Timer
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  FAIRCHILD [Fairchild Semiconductor]
Trang chủ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

LM555CN bảng dữ liệu(HTML) 5 Page - Fairchild Semiconductor

  LM555CN Datasheet HTML 1Page - Fairchild Semiconductor LM555CN Datasheet HTML 2Page - Fairchild Semiconductor LM555CN Datasheet HTML 3Page - Fairchild Semiconductor LM555CN Datasheet HTML 4Page - Fairchild Semiconductor LM555CN Datasheet HTML 5Page - Fairchild Semiconductor LM555CN Datasheet HTML 6Page - Fairchild Semiconductor LM555CN Datasheet HTML 7Page - Fairchild Semiconductor LM555CN Datasheet HTML 8Page - Fairchild Semiconductor LM555CN Datasheet HTML 9Page - Fairchild Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 14 page
background image
LM555/NE555/SA555
5
5
5
5
Figure 1 illustrates a monostable circuit. In this mode, the timer generates a fixed pulse whenever the trigger voltage falls
below Vcc/3. When the trigger pulse voltage applied to the #2 pin falls below Vcc/3 while the timer output is low, the timer's
internal flip-flop turns the discharging Tr. off and causes the timer output to become high by charging the external capacitor C1
and setting the flip-flop output at the same time.
The voltage across the external capacitor C1, VC1 increases exponentially with the time constant t=RA*C and reaches 2Vcc/3
at td=1.1RA*C. Hence, capacitor C1 is charged through resistor RA. The greater the time constant RAC, the longer it takes
for the VC1 to reach 2Vcc/3. In other words, the time constant RAC controls the output pulse width.
When the applied voltage to the capacitor C1 reaches 2Vcc/3, the comparator on the trigger terminal resets the flip-flop,
turning the discharging Tr. on. At this time, C1 begins to discharge and the timer output converts to low.
In this way, the timer operating in the monostable repeats the above process. Figure 2 shows the time constant relationship
based on RA and C. Figure 3 shows the general waveforms during the monostable operation.
It must be noted that, for a normal operation, the trigger pulse voltage needs to maintain a minimum of Vcc/3 before the timer
output turns low. That is, although the output remains unaffected even if a different trigger pulse is applied while the output is
high, it may be affected and the waveform does not operate properly if the trigger pulse voltage at the end of the output pulse
remains at below Vcc/3. Figure 4 shows such a timer output abnormality.
2. Astable Operation
2. Astable Operation
2. Astable Operation
2. Astable Operation
Figure 4. Waveforms of Monostable Operation (abnormal)
Figure 4. Waveforms of Monostable Operation (abnormal)
Figure 4. Waveforms of Monostable Operation (abnormal)
Figure 4. Waveforms of Monostable Operation (abnormal)
100m
100m
100m
100m
1
11
110
10
10
10
100
100
100
100
1k
1k
1k
1k
10k
10k
10k
10k
100k
100k
100k
100k
1E-3
1E-3
1E-3
1E-3
0.01
0.01
0.01
0.01
0.1
0.1
0.1
0.1
1
11
1
10
10
10
10
100
100
100
100
(R
(R
(R
(R
A
A
A
A +2R
+2R
+2R
+2R
B
B
B
B)
)))
Fr equency(Hz)
Fr equency(Hz)
Fr equency(Hz)
Fr equency(Hz)
Figure 5. Astable Circuit
Figure 5. Astable Circuit
Figure 5. Astable Circuit
Figure 5. Astable Circuit
Figure 6. Capacitance and Resistance vs. Frequency
Figure 6. Capacitance and Resistance vs. Frequency
Figure 6. Capacitance and Resistance vs. Frequency
Figure 6. Capacitance and Resistance vs. Frequency
1
5
6
7
8
4
2
3
RESET
Vcc
DISCH
THRES
CONT
GND
OUT
TRIG
+Vcc
RA
C1
C2
RL
RB


Số phần tương tự - LM555CN

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
LM555CN NSC-LM555CN Datasheet
822Kb / 12P
   Timer
logo
Intersil Corporation
LM555CN INTERSIL-LM555CN Datasheet
84Kb / 6P
   Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment
December 1999
logo
Harris Corporation
LM555CN HARRIS-LM555CN Datasheet
79Kb / 6P
   Timers for Timing Delays and Oscillator Application in Commercial, Industrial and Military Equipment
LM555CN HARRIS-LM555CN Datasheet
65Kb / 6P
   Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment
logo
Texas Instruments
LM555CN TI-LM555CN Datasheet
1Mb / 21P
[Old version datasheet]   Timing from Microseconds through Hours
More results

Mô tả tương tự - LM555CN

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Unisonic Technologies
NE555 UTC-NE555_15 Datasheet
205Kb / 8P
   SINGLE TIMER
logo
GTM CORPORATION
GPNE555 GTM-GPNE555 Datasheet
499Kb / 5P
   SINGLE TIMER
GSCNE555 GTM-GSCNE555 Datasheet
519Kb / 5P
   SINGLE TIMER
logo
Fairchild Semiconductor
KA555IDTF FAIRCHILD-KA555IDTF Datasheet
156Kb / 14P
   Single Timer
KA555I FAIRCHILD-KA555I Datasheet
156Kb / 14P
   Single Timer
LM555 FAIRCHILD-LM555_12 Datasheet
194Kb / 13P
   Single Timer
KA555 FAIRCHILD-KA555 Datasheet
148Kb / 14P
   Single Timer
KA555DTF FAIRCHILD-KA555DTF Datasheet
156Kb / 14P
   Single Timer
logo
SeCoS Halbleitertechnol...
SSCNE555 SECOS-SSCNE555 Datasheet
777Kb / 5P
   Single Timer
logo
Unisonic Technologies
C555 UTC-C555_18 Datasheet
208Kb / 4P
   SINGLE TIMER
C555 UTC-C555 Datasheet
167Kb / 4P
   SINGLE TIMER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com