© 2002 Fairchild Semiconductor Corporation

www.fairchildsemi.com

LM555 Rev. 1.1.0

2

Block Diagram

Figure 1. Block Diagram

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-

ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-

tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The

Symbol

Parameter

Value

Unit

Supply Voltage

16

V

Lead Temperature (Soldering 10s)

300

°C

Power Dissipation

600

mW

Operating Temperature Range

0 ~ +70

°C

Storage Temperature Range

-65 ~ +150

°C

F/F

OutPut

Stage

1

7

5

2

3

4

6

8

RR

R

Comp.

Comp.

Discharging Tr.

Vref

Vcc

Discharge

Threshold

Control

Voltage

GND

Trigger

Output

Reset

GND

Trigger

Output

Reset

Discharge

Threshold

Control

Voltage

Threshold

Discharging Transistor