LM555QML Timer Datasheet

LM555QML Datasheet, PDF, Equivalent


Part Number

LM555QML

Description

Timer

Manufacture

etcTI

Total Page 19 Pages
Datasheet
Download LM555QML Datasheet


LM555QML
LM555QML
www.ti.com
SNOSAP2C – AUGUST 2005 – REVISED APRIL 2013
LM555QML Timer
Check for Samples: LM555QML
FEATURES
1
2 Direct Replacement for SE555/NE555
• Timing from Microseconds through Hours
• Operates in Both Astable and Monostable
Modes
• Adjustable Duty Cycle
• Output can Source or Sink 200 mA
• Output and Supply TTL Compatible
• Temperature Stability Better than 0.005% per
°C
• Normally On and Normally Off Output
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.
APPLICATIONS
• Precision Timing
• Pulse Generation
• Sequential Timing
• Time Delay Generation
• Pulse Width Modulation
• Pulse Position Modulation
• Linear Ramp Generator
CONNECTION DIAGRAM
Figure 1. Dual-In-Line Package
Figure 2. Metal Can Package
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2013, Texas Instruments Incorporated

LM555QML
LM555QML
SNOSAP2C – AUGUST 2005 – REVISED APRIL 2013
SCHEMATIC DIAGRAM
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage
Power Dissipation (2)
Metal Can
CDIP
Operating Temperature Range
Maximum Junction Temperature (TJmax)
Storage Temperature Range
Soldering Information (Soldering 10 Seconds)
Thermal Resistance
θJA
ESD Tolerance (3)
θJC
CDIP Still Air
CDIP 500LF / Min Air Flow
Metal Can Still Air
Metal Can 500LF / Min Air Flow
CDIP
Metal Can
+18V
760 mW
1180 mW
55°C TA +125°C
+150°C
65°C TA +150°C
260°C
125°C/W
71°C/W
176°C/W
96°C/W
20°C/W
42°C/W
500V
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not ensure specific performance limits. For ensured specifications and test conditions, see the
Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance characteristics may
degrade when the device is not operated under the listed test conditions.
(2) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature),
θJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any
temperature is PDmax = (TJmax - TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower.
(3) Human body model, 1.5Kin series with 100pF.
2 Submit Documentation Feedback
Product Folder Links: LM555QML
Copyright © 2005–2013, Texas Instruments Incorporated


Features LM555QML www.ti.com SNOSAP2C – AUGUS T 2005 – REVISED APRIL 2013 LM555QML Timer Check for Samples: LM555QML FEA TURES 1 •2 Direct Replacement for SE5 55/NE555 • Timing from Microseconds t hrough Hours • Operates in Both Astab le and Monostable Modes • Adjustable Duty Cycle • Output can Source or Sin k 200 mA • Output and Supply TTL Comp atible • Temperature Stability Better than 0.005% per °C • Normally On an d Normally Off Output DESCRIPTION The LM555 is a highly stable device for gen erating accurate time delays or oscilla tion. 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 a stable operation as an oscillator, the free running frequency and duty cycle a re accurately controlled with two exter nal resistors and one capacitor. The ci rcuit may be triggered and reset on fal ling waveforms, and the output circuit can source or sink up to 200mA or drive TTL c.
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