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555 - Precision Timer

Datasheet Summary

Description

These devices are precision timing circuits capable of producing accurate time delays or oscillation.

In the timedelay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network.

Features

  • Timing from microseconds to hours.
  • Astable or monostable operation.
  • Adjustable duty cycle.
  • TTL compatible output can source or sink up to 200mA.
  • “Green” Molding Compound (No Br, Sb).
  • Lead Free Finish/ RoHS Compliant (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www. diodes. com/products/lead_free. html. VCC DISCH THRES CONT NE555/SA555/NA555 Document number: DS35.

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Datasheet preview – 555

Datasheet Details

Part number 555
Manufacturer DIODES
File Size 723.22 KB
Description Precision Timer
Datasheet download datasheet 555 Datasheet
Additional preview pages of the 555 datasheet.

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    Full PDF Text Transcription

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    NEW PRODUCT NE555/SA555/NA555 PRECISION TIMERS Description These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the timedelay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high.
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