Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

NE555 Datasheet(PDF) 10 Page - Texas Instruments

Click here to check the latest version.
Part No. NE555
Description  xx555 Precision Timers
Download  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

NE555 Datasheet(HTML) 10 Page - Texas Instruments

Back Button NE555 Datasheet HTML 6Page - Texas Instruments NE555 Datasheet HTML 7Page - Texas Instruments NE555 Datasheet HTML 8Page - Texas Instruments NE555 Datasheet HTML 9Page - Texas Instruments NE555 Datasheet HTML 10Page - Texas Instruments NE555 Datasheet HTML 11Page - Texas Instruments NE555 Datasheet HTML 12Page - Texas Instruments NE555 Datasheet HTML 13Page - Texas Instruments NE555 Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 36 page
background image
Time − 0.1 ms/div
Capacitor Voltage
Output Voltage
Input Voltage
RA = 9.1 kΩ
CL = 0.01 µF
RL = 1 kΩ
See Figure 9
C − Capacitance −
µF
10
1
10−1
10−2
10−3
10−4
100
10
1
0.1
0.01
10−5
0.001
RA = 10 MΩ
RA = 10 kΩ
RA = 1 kΩ
RA = 100 kΩ
RA = 1 MΩ
VCC
(5 V to 15 V)
RA
RL
Output
GND
OUT
VCC
CONT
RESET
DISCH
THRES
TRIG
Input
5
8
4
7
6
2
3
1
Pin numbers shown are for the D, JG, P, PS, and PW packages.
NA555, NE555, SA555, SE555
SLFS022I – SEPTEMBER 1973 – REVISED SEPTEMBER 2014
www.ti.com
Feature Description (continued)
Figure 9. Circuit for Monostable Operation
Monostable operation is initiated when TRIG voltage falls below the trigger threshold. Once initiated, the
sequence ends only if TRIG is high for at least 10 µs before the end of the timing interval. When the trigger is
grounded, the comparator storage time can be as long as 10 µs, which limits the minimum monostable pulse
width to 10 µs. Because of the threshold level and saturation voltage of Q1, the output pulse duration is
approximately tw = 1.1RAC. Figure 11 is a plot of the time constant for various values of RA and C. The threshold
levels and charge rates both are directly proportional to the supply voltage, VCC. The timing interval is, therefore,
independent of the supply voltage, so long as the supply voltage is constant during the time interval.
Applying a negative-going trigger pulse simultaneously to RESET and TRIG during the timing interval discharges
C and reinitiates the cycle, commencing on the positive edge of the reset pulse. The output is held low as long
as the reset pulse is low. To prevent false triggering, when RESET is not used, it should be connected to VCC.
Figure 10. Typical Monostable Waveforms
Figure 11. Output Pulse Duration vs Capacitance
10
Submit Documentation Feedback
Copyright © 1973–2014, Texas Instruments Incorporated
Product Folder Links: NA555 NE555 SA555 SE555


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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