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NE555 Datasheet(PDF) 1 Page - STMicroelectronics |
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1 page ![]() July 1998 ® N DIP8 (Plastic Package) D SO8 (Plastic Micropackage) 1 2 3 45 6 7 8 1 - GND 2 - Trigger 3 - Output 4 - Reset 5 - Control voltage 6 - Threshold 7 - Discharge 8- VCC PIN CONNECTIONS (top view) . LOW TURN OFF TIME . MAXIMUM OPERATING FREQUENCY GREATER THAN 500kHz . TIMING FROM MICROSECONDS TO HOURS . OPERATES IN BOTH ASTABLE AND MONOSTABLE MODES . HIGH OUTPUT CURRENT CAN SOURCE OR SINK 200mA . ADJUSTABLE DUTY CYCLE . TTL COMPATIBLE . TEMPERATURE STABILITY OF 0.005% PER oC ORDER CODES Part Number Temperature Range Package ND NE555 0 oC, 70oC •• SA555 –40 oC, 105oC •• SE555 –55 oC, 125oC •• DESCRIPTION The NE555 monolithic timing circuit is a highly stable controller capableof producing accuratetime delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external re- sistor and capacitor.For a stableoperation as an os- cillator, the free running frequency and the duty cy- cle are both accurately controlled with two external resistors and one capacitor. The circuit may be trig- gered and reset on falling waveforms, and the out- put structure can source or sink up to 200mA. The NE555 is available in plastic and ceramic minidip package and in a 8-lead micropackage and in metal can package version. NE555 SA555 - SE555 GENERAL PURPOSE SINGLE BIPOLAR TIMERS 1/10 |