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XR-555 - Timing Circuit

Description

The XR-555 monolithic timing circuit is a highly stable controller capable of producing accurate timing pulses.

It is a direct, pin-for-pin replacement for the SEINE 555 timer.

The circuit contains independent control terminals for triggering or resetting if desired.

Features

  • Direct Replacement for SEINE 555 Timing from Microseconds Thru Hours Operates in Both Monostable and Astable Modes High Current Drive Capability (200 mA) TIL and DTL Compatible Outputs Adjustable Duty Cycle Temperature Stability of 0.005%/OC.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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XR-555 Timing Circuit GENERAL DESCRIPTION The XR-555 monolithic timing circuit is a highly stable controller capable of producing accurate timing pulses. It is a direct, pin-for-pin replacement for the SEINE 555 timer. The circuit contains independent control terminals for triggering or resetting if desired. In the monostable mode of operation, the time delay is controlled by one external resistor and one capacitor. For astable operation as an oscillator, the free-running frequency and the duty cycle are accurately controlled with two external resistors and one capacitor (as shown in Figure 2). The XR-555 may be triggered or reset on falling waveforms. Its output can source or sink up to 200 mA or drive TIL circuits.
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