NE555D datasheet, pdf & pinout onsemi

How a 555 Timer IC Works

NE555D Pinout

ne555d Picture

NE555D is a classic multi-function timer chip with single precision characteristics, widely used in a variety of electronic circuit design, such as timers, pulse generators, oscillators, etc. (In summary, it can be used in circuits related to time and generating various waveforms). Its peripheral circuit design is very simple (plus resistance capacitance can be) and very cheap, almost become the electronic engineer “universal tool”. The specific parameters are as follows: the normal operating voltage range is 4.5V to 16V; The output current can reach 200mA, which is enough to drive common loads such as leds and relays. The core function of the NE555D is to achieve precise timing or oscillation through the selection of external resistors and capacitors, with very high flexibility. NE555D is available in two packages, DIP-8 or SOIC-8, the main advantages are small size, easy to weld, and small footprint. However, because the chip is single precision, it cannot be used in circuits with high precision requirements.

The pinout definitions are shown below: