LM555 Timer: Datasheet, Application and Pinout

The LM555 is a highly stable device for generating accurate time delays or oscillation. It operates in 2 modes: monastable mode and astable mode. In monastable mode, 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.

Symbol

Footprint

3D Model

• 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

• Available in 8-pin MSOP package

Timer is the most commonly used for Precision timing and Pulse generation applications, so does LM555 Timer. It can adapt itself to various applications due to its different operating modes. We can see the monastable and astable operations as shown below.

Texas Instruments focus on developing analog chips and embedded processors, which account for more than 80% of its revenue, Texas Instruments emerged in 1951 after a reorganization of Geophysical Service Incorporated, a company founded in 1930 that manufactured equipment for use in the seismic industry, as well as defense electronics.

Download datasheets and manufacturer documentation for Texas Instruments LM555CM.