器件名称:
LM556
功能描述:
Dual Timer
文件大小:
44.69KB 共8页
简 介:
www.fairchildsemi.com LM556/NE556 Dual Timer Features Replaces Two LM555/NE556 Timers Operates in Both Astable And Monostable Modes High Output Current TTL Compatible Timing From Microsecond To Hours Adjustable Duty Cycle Temperature Stability Of 0.005% Per °C Description The LM556/NE556 series dual monolithic timing circuits are a highly stable controller capable of producing accurate time delays or oscillation. The LM556/NE556 is a dual LM555. Timing is provided an external resistor and capacitor for each timing function. The two timers operate independently of each other, sharing only VCC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA. Applications Precision Timing Pulse Shaping Pulse Width Modulation Frequency Division Traffic Light Control Sequential Timing Pulse Generator Time Delay Generator Touch Tone Encoder Tone Burst Generator 14-DIP 14-SOP 1 1 Internal Block Diagram Rev. 1.0.0 2001 Fairchild Semiconductor Corporation LM556/NE556 Absolute Maximum Ratings (TA = 25°C) Parameter Supply Voltage Lead Temperature (soldering 10sec) Power Dissipation Operating Temperature Range LM556/NE556 Storage Temperature Range Symbol VCC TLEAD PD TOPR TSTG Value 16 300 600 0 ~ + 70 - 65 ~ + 150 Unit V °C mW °C °C 2 LM556/NE556 Electrical Characteristics (TA = 25°C, VCC = 5 ~ 15V, unless otherwise specified) Parameter Supply Voltage Supply Current *1(two timers) (low state) Timing E……
