Datasheet

LM555 — Single Timer
© 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
absolute maximum ratings are stress ratings only. Values are at T
A
= 25°C unless otherwise noted.
Symbol Parameter Value Unit
V
CC
Supply Voltage 16 V
T
LEAD
Lead Temperature (Soldering 10s) 300 °C
P
D
Power Dissipation 600 mW
T
OPR
Operating Temperature Range 0 ~ +70 °C
T
STG
Storage Temperature Range -65 ~ +150 °C
F/F
OutPut
Stage
1
7
5
2
3
4
6
8
RRR
Comp.
Comp.
Discharging Tr.
Vref
Vcc
Discharge
Threshold
Control
Voltage
GND
Trigger
Output
Reset
GND
Trigger
Output
Reset
V
CC
Discharge
ThresholdControl
Voltage
Threshold
V
REF
Discharging Transistor