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NE555. PRECISION TIMER. Description. These devices are precision timing circuits capable of producing accurate time delays or oscillation. Design of an Astable multivibrator using 555 timer IC, generating non-sinusoidal waveform in the form of Rectangular waveform as well as capacitor voltageThe 555 timer IC was first introduced around 1971 by the Signetics Corporation as the SE555/NE555 and was called "The IC Time Machine" and was also the very 555 IC, 8 Pin Pinout Diagrams. Page 4. Explanation of Terminals for 8 pin 555. Pin 1: Grounded Terminal: All the Output of the timer is available. Data for temperatures below –40°C and above 105°C are applicable for SE555 circuits only. Figure 1. Low-Level Output Voltage. Figure 2. Low-Level Output Voltage. a standard 555 IC to perform two of its most common functions - as a timer in monostable mode and as a square wave oscillator in astable mode. LM555 Timer. 1 Features. 3 Description. The LM555 is a highly stable device for generating. 1• Direct Replacement for SE555/NE555. The 555 timer IC was first introduced around 1971 by the. Signetics Corporation as the SE555/NE555. • Initially it was called "The IC Time Machine".