器件名称: NE555
功能描述: Single Timer
文件大小: 150.3KB 共14页
简 介:www.fairchildsemi.com
LM555/NE555/SA555
Single Timer
Features
High Current Drive Capability (200mA) Adjustable Duty Cycle Temperature Stability of 0.005%/°C Timing From Sec to Hours Turn off Time Less Than 2Sec
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
Applications
Precision Timing Pulse Generation Time Delay Generation Sequential Timing
1
8-SOP
1
Internal Block Diagram
R
R
R 8
GND
1
Vcc
Comp.
Trigger
Discharging Tr. 7
2
Discharge
Output
3
OutPut Stage
F/F
6 Comp.
Threshold Control Voltage
Reset
4
5
Vref
Rev. 1.0.3
2002 Fairchild Semiconductor Corporation
LM555/NE555/SA555
Absolute Maximum Ratings (TA = 25°C)
Parameter Supply Voltage Lead Temperature (Soldering 10sec) Power Dissipation Operating Temperature Range LM555/NE555 SA555 Storage Temperature Range Symbol VCC TLEAD PD TOPR TSTG Value 16 300 600 0 ~ +70 -40 ~ +85 -65 ~ +150 Unit V °C mW °C °C
2
LM555/NE555/SA555
Electrical Characteristics
(TA = 25°C, VCC = 5 ~ 15V, unless otherwise specified) Parameter Supply Voltage Supply Current (Low Stable) (Note1) Timing Error (Monostable) Initial Accuracy (Note2) Drift with Temperature (Note4) Drift with Supply Voltage (Note4) Timing Error……
