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558

Quad Timer

Fairchild Semiconductor 

NE558

Quad Timer

Features

• Wide Supply Voltage Range: 4.5V To 16V

• 100 mA Output Current Per Section

• Edge Triggered Without Coupling Capacitor

• Time Period Equals RC

• Output independent Of Trigger Conditions

Applications

• Quad One-Shot

• Sequential Timing

• Precision Timing

• Time Delay Generation

Internal Block Diagram

www.fairchildsemi.com

Description

The NE558 series are monolithic Quad Timers which can

be used to produce four entirely independent timing func-

tions. These highly stable, general purpose controllers can be

used in a monostable mode to produce accurate time delays,

from microseconds to hours. The time is precisely con-

trolled by one external resistor and one capacitor in the time

delay mode. A stable mode can be operated using two of

four time sections.

16-DIP

1

16-SOP

1

©2001 Fairchild Semiconductor Corporation

Rev. 1.0.1

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