MIC1557YD5-TR

MIC1557YD5-TR is an IttyBitty RC timer/oscillator. It is designed to provide rail-to-rail pulses for precise time delay or frequency generation. This 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 (THR) has precedence over the trigger (TRG) input, ensuring that the BiCMOS output is off when TRG is high. It can be used as an astable (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. Application includes 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
• Low current, no output cross-conduction current spikes
• <lt/>1μA typical shutdown mode, 200μA typical (TRG and THR low) at 3V supply
• 255μA supply current typical (VS = 5V, TA = +25°C)
• 858 to 1161μs monostable timing accuracy (TA = +25°C, RA = 10kohm, C =0.1μF, VS = 5V)
• 61 to 72%/VS threshold voltage range (VS = 15V, TA = +25°C)
• Supply Voltage range from 2.7 to 18V (TA = +25°C)
• 15ns output rise time typical (RL = 10Mohm, CL = 10pF, VS = 5V, TA = +25°C)
• 5 lead TSOT-23 package, operating temperature range from -40°C to +85°C