LM555QML
www.ti.com SNOSAP2C – AUGUST 2005 – REVISED APRIL 2013 LM555QML Timer
Check for Samples: LM555QML FEATURES 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. 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
В°C
Normally On and Normally Off Output APPLICATIONS Precision Timing
Pulse Generation …
