KA555DTF Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – Single Timer

KA555
Single Timer
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
www.fairchildsemi.com
Description
The KA555 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