MIC1555BM5

Programmable Timers And Oscillators Overview

The MIC1555BM5 is a CMOS RC timer and oscillator from the IttyBitty series, manufactured by Micrel. It operates within a voltage range of +2.7V to +18V and features low current consumption, including a typical shutdown mode current of less than 1µA. The device provides rail-to-rail pulses for precise time delay or frequency generation, with timing capabilities spanning microseconds to hours. Key electrical characteristics include threshold input precedence over trigger input, an output on-resistance of less than 15Ω, and high stability metrics: temperature stability under 0.005%/°C and supply stability under 0.055%/V. It is housed in a small SOT-23-5 surface-mount package.

Programmable Timers And Oscillators Feature Summary

• Operates on +2.7V to +18V supply with <1µA typical shutdown current
• Generates rail-to-rail pulses for time delays or frequency generation
• Features threshold input precedence over trigger input
• Low output on-resistance (<15Ω) with no output cross-conduction spikes

Programmable Timers And Oscillators Applications

• Precise time delay circuits
• Frequency generation oscillators
• Battery-powered devices requiring low standby current

Programmable Timers And Oscillators Part Context

The MIC1555BM5 belongs to the MIC1555 family of IttyBitty CMOS RC timers and oscillators. This series is designed to provide compact solutions for timing applications, utilizing external resistors and capacitors to set timing intervals. The BM5 suffix typically denotes a specific temperature grade or packaging variant within the Micrel product line, distinct from other suffixes like YD5 or YM5 which may indicate different packages or grades.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements should be sought from the MIC1555 family, such as the MIC1555YD5 or MIC1555YM5, ensuring compatibility with the required package type (SOT-23-5) and operating voltage range. Verify that the substitute component maintains the same pinout and electrical specifications, particularly the shutdown current and output drive capability.