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LM556/I
DUAL TIMER
The LM556/I series dual monolithic timing circuits are a highly stable
controller capable of producing accurate time delays or oscillation.
The LM556 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 wave forms. The
output structures may sink or source 200mA.
FEATURES
Replaces Two LM555C 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
ORDERING INFORMATION
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
BLOCK DIAGRAM
Device
Package
Operating Temperature
LM556CN
14 DIP
0 ~ + 70
°C
LM556ICN
14 DIP
-40 ~ + 85
°C
14 DIP
1999 Fairchild Semiconductor Corporation
Rev. B
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