NE555 查看數據表（PDF） - Fairchild Semiconductor

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NE555

Single Timer

Fairchild Semiconductor 

LM555/NE555/SA555

Single Timer

www.fairchildsemi.com

Features

• High Current Drive Capability (200mA)

• Adjustable Duty Cycle

• Temperature Stability of 0.005%/°C

• Timing From µSec to Hours

• Turn off Time Less Than 2µSec

Applications

• Precision Timing

• Pulse Generation

• Time Delay Generation

• Sequential Timing

Description

The LM555/NE555/SA555 is a highly stable controller

capable of producing accurate timing pulses. With a

monostable operation, the time delay is controlled by one

external resistor and one capacitor. With an astable

operation, the frequency and duty cycle are accurately

controlled by two external resistors and one capacitor.

8-DIP

1

8-SOP

1

Internal Block Diagram

R

GND 1

Trigger 2

Comp.

R

R

8 Vcc

Discharging Tr.

7 Discharge

Output 3

OutPut

Stage

F/F

Reset 4

Vref

Comp.

6 Threshold

Control

5

Voltage

©2002 Fairchild Semiconductor Corporation

Rev. 1.0.3

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