MIC1557YM5 TR

MICREL SEMICONDUCTOR  MIC1557YM5 TR  芯片, RC定时器/振荡器, ITTYBITTY, SMD

The is an Itty-bitty® RC Timer or Oscillator designed to provide rail-to-rail pulses for precise time delay or frequency generation. The device is similar in function to the industry standard 555 without a frequency control FC pin or an open collector discharge D pin. The threshold pin TH has precedence over the trigger TR input, ensuring that the BiCMOS output is off when TR is high. The oscillator may be used as an a stable oscillator or monostable one-shot with separate threshold and trigger inputs. In the one-shot mode, the output pulse width is precisely controlled by an external resistor and a capacitor. Time delays may be accurately controlled from microseconds to hours. In the oscillator mode, the output is used to provide precise feedback with a minimum of one resistor and one capacitor producing a 50% duty cycle square wave.

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Timing from microseconds to hours

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Threshold input precedence over trigger input

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No output cross-conduction current spikes