MIC1555YD5-TR

MIC1555YD5-TR is an IttyBitty® RC timer/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 pin or an open collector discharge pin. The threshold pin has precedence over the trigger input, ensuring that the BiCMOS output is off when TRG is high. It can be used as an astable or monostable 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. The application includes a precision timer, pulse generation, sequential timing, time-delay generation, missing pulse detector, micropower oscillator to 5MHz, charge-pump driver, LED blinker, voltage converter, linear sweep generator, variable frequency, and duty cycle oscillator.

• Timing from microseconds to hours, “Zero” leakage trigger and threshold inputs
• 50% square wave with one resistor, one capacitor, threshold input precedence over trigger input
• No output cross-conduction current spikes
• Supply voltage range from 2.7 to 18V (functional operation)
• Supply current is 240µA typ (VS = 5V, TA = 25°C)
• Monostable timing accuracy range from 858 to 1161µs (RA = 10kΩ, C =0.1µF, VS = 5V, TA = 25°C)
• Monostable drift overtemperature is 100ppm/°C typ (VS = 5V, –55°C ≤ TA ≤ +125°C)
• Monostable drift over supply is 0.5%/V typ (VS = 5V to 15V, TA = 25°C)
• Output voltage drop is 0.3V typ (VS = 15V, ISINK = 20mA, TA = 25°C)
• 5pin thin SOT-23 package, temperature range from -40 to 85°C