LM555

LM555 — Single Timer January 2013 LM555 Single Timer Features High-Current Drive Capability: 200 mA Adjustable Duty Cycle Temperature Stability of 0.005%/°C Timing From μs to Hours Turn off Time Less Than 2 μs Applications Precision Timing Pulse Generation Delay Generation Sequential Timing Description The LM555 is a highly stable controller capable of producing accurate timing pulses. With a monostable operation, the delay is controlled by one external resistor and one capacitor. With astable operation, the frequency and duty cycle are accurately controlled by two external resistors and one capacitor. 8-DIP 1 8-SOIC 1 Ordering Information Part Number LM555CN LM555CM LM555CMX Operating Temperature Range 0 ~ +70°C Top Mark LM555CN LM555CM LM555CM Package DIP 8L SOIC 8L SOIC 8L Packing Method Rail Rail Tape & Reel © 2002 Fairchild Semiconductor Corporation LM555 Rev. 1.1.0 1 www.fairchildsemi.com LM555 — Single Timer Block Diagram GGND 1 R TTriiggger 2 Comp. RR 8 VVcCcC DiDscishcahrgairngginTgraTnsri.stor 7 DDiisscchhaarrggee OOuuttppuutt 3 OutPut Stage F/F RReeseett 4 VVrReEfF 6 TThresshhoolldd Comp. 5 CTCohonrnettrsroohllold VVoltagee 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 ex...