Electronic Components Datasheet Search
Selected language     English  ▼
Part Name
         Description


NE555P Datasheet(PDF) 11 Page - Texas Instruments

Click here to check the latest version.
Part No. NE555P
Description  PRECISION TIMERS
Download  27 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo 

 11 page
background image
www.ti.com
t
H +
0.693 (R
A )
R
B)
C
t
L +
0.693 (R
B)
C
Other useful relationships are shown below.
period + tH ) tL + 0.693 (RA ) 2RB) C
frequency [
1.44
(R
A )
2R
B
) C
Output driver duty cycle +
t
L
t
H )
t
L
+
R
B
R
A )
2R
B
Output waveform duty cycle
+
t
L
t
H
+
R
B
R
A )
R
B
Low-to-high ratio
+
t
H
t
H )
t
L
+ 1–
R
B
R
A )
2R
B
C − Capacitance −
µF
100 k
10 k
1 k
100
10
1
100
10
1
0.1
0.01
0.1
0.001
RA + 2 RB = 10 MΩ
RA + 2 RB = 1 MΩ
RA + 2 RB = 100 kΩ
RA + 2 RB = 10 kΩ
RA + 2 RB = 1 kΩ
Missing-Pulse Detector
Time − 0.1 ms/div
VCC = 5 V
RA = 1 kΩ
C = 0.1
µF
See Figure 15
Capacitor Voltage
Output Voltage
Input Voltage
VCC (5 V to 15 V)
DISCH
OUT
VCC
RESET
RL
RA
A5T3644
C
THRES
GND
CONT
TRIG
Input
0.01
µF
Output
4
8
3
7
6
2
5
1
Pin numbers shown are shown for the D, JG, P, PS, and PW packages.
NA555, NE555, SA555, SE555
PRECISION TIMERS
SLFS022G – SEPTEMBER 1973 – REVISED MARCH 2008
Figure 12 shows typical waveforms generated during astable operation. The output high-level duration tH and
low-level duration tL can be calculated as follows:
Figure 14. Free-Running Frequency
The circuit shown in Figure 15 can be used to detect a missing pulse or abnormally long spacing between
consecutive pulses in a train of pulses. The timing interval of the monostable circuit is retriggered continuously by
the input pulse train as long as the pulse spacing is less than the timing interval. A longer pulse spacing, missing
pulse, or terminated pulse train permits the timing interval to be completed, thereby generating an output pulse
as shown in Figure 16.
Figure 15. Circuit for Missing-Pulse Detector
Figure 16. Completed Timing Waveforms for
Missing-Pulse Detector
Copyright © 1973–2008, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Link(s): 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 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
NE555PRECISION TIMERS SE555C FROM TI IS NOT RECOMMENDED FOR NEW DESIGNS 1 2 3 4 5 MoreTexas Instruments
NA555_07PRECISION TIMERS 1 2 3 4 5 MoreTexas Instruments
AD8224Precision Dual-Channel JFET Input Rail-to-Rail Instrumentation Amplifier 1 2 3 4 5 MoreAnalog Devices
LT1055Precision High Speed JFET Input Operational Amplifiers 1 2 3 4 5 MoreLinear Technology
AD517Low Cost Laser Trimmed Precision IC Op Amp 1 2 3 4 5 MoreAnalog Devices
TLVH432_07LOW-VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATORS 1 2 3 4 5 MoreTexas Instruments
SY58040U_07ULTRA PRECISION 4 4 CML SWITCH WITH INTERNAL I/O TERMINATION 1 2 3 4 5 MoreMicrel Semiconductor
SY89465UPrecision LVDS 1:10 Fanout with 2:1 Runt Pulse Eliminator MUX and Internal Termination 1 2 3 4 5 MoreMicrel Semiconductor

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , 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