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LM556/NE556
Dual Timer
Features
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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 capaci-
tor for each timing function. The two timers operate inde-
pendently of each other, sharing only V
CC
and ground. The
circuits may be triggered and reset on falling waveforms.
The output structures may sink or source 200mA.
Applications
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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
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Internal Block Diagram
Rev. 1.0.0
©2001 Fairchild Semiconductor Corporation
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
