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555 Datasheet Timer

Manufacturer: Philips Semiconductors (now NXP Semiconductors)

General Description

The 555 monolithic timing circuit is a highly stable controller capable of producing accurate time delays, or oscillation.

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 the duty cycle are both accurately controlled with two external resistors and one capacitor.

Overview

INTEGRATED CIRCUITS NE/SA/SE555/SE555C Timer Product data Supersedes data of 1994 Aug 31 Philips Semiconductors 2003 Feb 14 Philips Semiconductors Timer Product.

Key Features

  • Turn-off time less than 2 µs.
  • Max. operating frequency greater than 500 kHz.
  • Timing from microseconds to hours.
  • Operates in both astable and monostable modes.
  • High output current.
  • Adjustable duty cycle.
  • TTL compatible.
  • Temperature stability of 0.005% per °C.