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IC NE555, SMD, original
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IC NE555, SMD type, original, with 8 pins. This is a monolithic integrated timing circuit, very stable and reliable, designed to provide precise time delays or oscillations, being a versatile component in countless electronic applications. Due to its ease of use and its adaptability in several operating modes, the NE555 is one of the most famous integrated circuits in the world.
In monostable (timer) mode, the time interval is precisely controlled by a resistor and an external capacitor. In stable mode, used as an oscillator, the NE555 allows precise control of frequency and duty cycle with the help of two resistors and a capacitor. The NE555 also supports bistable operation, functioning as a flip-flop for various switching applications.
This circuit can be triggered and reset by falling signals, and the output stage can supply or absorb up to 200mA, providing flexibility for powering loads such as LEDs, motors and other components.
Main operating modes:
Monostable Mode: The NE555 works as a single pulse generator, producing a single output of the set duration. Common applications include timers, missing pulse detection and debounce-free switches.
Astable Mode: In this mode, the NE555 works as an oscillator, generating a continuous square signal. Applications include flashers for LEDs and lamps, pulse generators, logic clocks, tone generators, security alarms and Pulse Width Modulation (PWM).
Bistable Mode: Operating as a flip-flop, the NE555 switches between two stable states, ideal for reverberation-free latching switches and switching circuits.
Specifications:
Supply voltage: 5 - 15VDC
Maximum operating frequency: Over 500kHz
Time interval: From microseconds to hours, depending on the external components used
Operating modes: Supports astable, monostable and bistable configurations
Output current: Can supply or absorb up to 200mA
Adjustable duty cycle: Provides flexibility in adjusting the pulse duration
TTL Compatible: Ensures compatibility with standard logic circuits
Pinout (Pin configuration):
Pin 1: Ground (GND)
Pin 2: Trigger (input to start time interval)
Pin 3: Output (output signal)
Pin 4: Reset (resets the timing function)
Pin 5: Control Voltage (used to adjust the threshold voltage)
Pin 6: Threshold (input for time interval completion)
Pin 7: Discharge (connected to external timing capacitor)
Pin 8: Supply voltage (VCC, usually between 5V and 15V)
