Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LM555CM/NOPB Datasheet(PDF) 12 Page - Texas Instruments

Click here to check the latest version.
Part # LM555CM/NOPB
Description  Timer
Download  25 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM555CM/NOPB Datasheet(HTML) 12 Page - Texas Instruments

Back Button LM555CM/NOPB Datasheet HTML 8Page - Texas Instruments LM555CM/NOPB Datasheet HTML 9Page - Texas Instruments LM555CM/NOPB Datasheet HTML 10Page - Texas Instruments LM555CM/NOPB Datasheet HTML 11Page - Texas Instruments LM555CM/NOPB Datasheet HTML 12Page - Texas Instruments LM555CM/NOPB Datasheet HTML 13Page - Texas Instruments LM555CM/NOPB Datasheet HTML 14Page - Texas Instruments LM555CM/NOPB Datasheet HTML 15Page - Texas Instruments LM555CM/NOPB Datasheet HTML 16Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 12 / 25 page
background image
LM555
SNAS548D – FEBRUARY 2000 – REVISED JANUARY 2015
www.ti.com
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LM555 timer can be used a various configurations, but the most commonly used configuration is in
monostable mode. A typical application for the LM555 timer in monostable mode is to turn on an LED for a
specific time duration. A pushbutton is used as the trigger to output a high pulse when trigger pin is pulsed low.
This simple application can be modified to fit any application requirement.
8.2 Typical Application
Figure 17 shows the schematic of the LM555 that flashes an LED in monostable mode.
Figure 17. Schematic of Monostable Mode to Flash an LED
8.2.1 Design Requirements
The main design requirement for this application requires calculating the duration of time for which the output
stays high. The duration of time is dependent on the R and C values (as shown in Figure 17) and can be
calculated by:
t = 1.1 × R × C seconds
(6)
8.2.2 Detailed Design Procedure
To allow the LED to flash on for a noticeable amount of time, a 5 second time delay was chosen for this
application. By using Equation 6, RC equals 4.545. If R is selected as 100 k
Ω, C = 45.4 µF. The values of R =
100 k
Ω and C = 47 µF was selected based on standard values of resistors and capacitors. A momentary push
button switch connected to ground is connected to the trigger input with a 10-K current limiting resistor pullup to
the supply voltage. When the push button is pressed, the trigger pin goes to GND. An LED is connected to the
output pin with a current limiting resistor in series from the output of the LM555 to GND. The reset pin is not used
and was connected to the supply voltage.
8.2.2.1 Frequency Divider
The monostable circuit of Figure 11 can be used as a frequency divider by adjusting the length of the timing
cycle. Figure 18 shows the waveforms generated in a divide by three circuit.
12
Submit Documentation Feedback
Copyright © 2000–2015, Texas Instruments Incorporated
Product Folder Links: LM555


Similar Part No. - LM555CM/NOPB

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
LM555CM/NOPB TI-LM555CM/NOPB Datasheet
1Mb / 21P
[Old version datasheet]   Timing from Microseconds through Hours
More results

Similar Description - LM555CM/NOPB

ManufacturerPart #DatasheetDescription
logo
FOTEK CONTROLS CO., LTD...
TDVN-M3 FOTEK-TDVN-M3 Datasheet
196Kb / 1P
   TWIN TIMER & DEFROSTING TIMER
logo
Festo Corporation.
PZVT-120-SEC FESTO-PZVT-120-SEC Datasheet
83Kb / 1P
   Timer
PZVT-99999-MIN-B FESTO-PZVT-99999-MIN-B Datasheet
84Kb / 1P
   Timer
PZVT-3-SEC FESTO-PZVT-3-SEC Datasheet
83Kb / 1P
   Timer
PZVT-30-SEC FESTO-PZVT-30-SEC Datasheet
83Kb / 1P
   Timer
PZVT-999-SEC-B FESTO-PZVT-999-SEC-B Datasheet
84Kb / 1P
   Timer
logo
Microsemi Corporation
TSC355 MICROSEMI-TSC355 Datasheet
489Kb / 4P
   Timer
logo
National Semiconductor ...
LM555 NSC-LM555 Datasheet
822Kb / 12P
   Timer
logo
Festo Corporation.
PZVT-300-SEC FESTO-PZVT-300-SEC Datasheet
83Kb / 1P
   Timer
logo
NXP Semiconductors
NE555 PHILIPS-NE555 Datasheet
120Kb / 7P
   Timer
August 31, 1994
More results


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


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
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com