Timer. LM555 Datasheet

LM555 Timer. Datasheet pdf. Equivalent

Part LM555
Description Timer
Feature LM555 Timer July 2006 LM555 Timer General Description The LM555 is a highly stable device for gene.
Manufacture National Semiconductor
Datasheet
Download LM555 Datasheet




LM555
July 2006
LM555
Timer
General Description
The LM555 is a highly stable device for generating accurate
time delays or oscillation. Additional terminals are provided
for triggering or resetting if desired. In the time delay mode of
operation, the time is precisely controlled by one external
resistor and capacitor. For astable operation as an oscillator,
the free running frequency and duty cycle are accurately
controlled with two external resistors and one capacitor. The
circuit may be triggered and reset on falling waveforms, and
the output circuit can source or sink up to 200mA or drive
TTL circuits.
Features
n Direct replacement for SE555/NE555
n Timing from microseconds through hours
n Operates in both astable and monostable modes
n Adjustable duty cycle
n Output can source or sink 200 mA
n Output and supply TTL compatible
n Temperature stability better than 0.005% per ˚C
n Normally on and normally off output
n Available in 8-pin MSOP package
Applications
n Precision timing
n Pulse generation
n Sequential timing
n Time delay generation
n Pulse width modulation
n Pulse position modulation
n Linear ramp generator
Schematic Diagram
© 2006 National Semiconductor Corporation DS007851
00785101
www.national.com



LM555
Connection Diagram
Dual-In-Line, Small Outline
and Molded Mini Small Outline Packages
Ordering Information
Package
8-Pin SOIC
8-Pin MSOP
8-Pin MDIP
Part Number
LM555CM
LM555CMX
LM555CMM
LM555CMMX
LM555CN
Top View
00785103
Package Marking
LM555CM
LM555CM
Z55
Z55
LM555CN
Media Transport
Rails
2.5k Units Tape and Reel
1k Units Tape and Reel
3.5k Units Tape and Reel
Rails
NSC Drawing
M08A
MUA08A
N08E
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