Single Timer
www.fairchildsemi.com
KA555
Single Timer
Features
• • • • • High Current Drive Capability (200mA) Adjustable Duty Cycl...
Description
www.fairchildsemi.com
KA555
Single Timer
Features
High Current Drive Capability (200mA) Adjustable Duty Cycle Temperature Stability of 0.005%/°C Timing From Msec to Hours Turn Off Time Less Than 2Msec
Description
The KA555 is a highly stable controller capable of producing accurate timing pulses. With monos table operation, the time delay is controlled by one external resistor and one capacitor. With astable operation, the frequency and duty cycle are accurately controlled with 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. 1.0.2
©2002 Fairchild Semiconductor Corporation
KA555
Absolute Maximum Ratings (TA = 25°C)
Parameter Supply Voltage Lead Temperature (Soldering 10sec) Power Dissipation Operating Temperature Range KA555/KA555I 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
KA555
Electrical Characteristics
(TA = 25°C, VCC = 5 ~ 15V, unless otherwise specified) Parameter Supply Voltage Supply Current *1(Low Stable) Timing Error *2 (Monos Table) Initial Accuracy Drift with Temperature Drift with Supply Voltage Timing Error *2(Astable) Initial Accuracy Drift with Temperature Drift with Sup...
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