ICM7555ESA+

Programmable Timers And Oscillators Overview

The ICM7555ESA+ is a single general-purpose RC timer manufactured by Analog Devices Inc./Maxim Integrated. It utilizes monolithic low-power CMOS technology to generate accurate time delays or frequencies. The device operates within a supply voltage range of 2V to 18V and features an operating temperature range of -40°C to +85°C. Key electrical parameters include a maximum oscillation frequency of 500kHz, a typical supply current of 30µA at 2V, and output drive capabilities compatible with both TTL and CMOS logic families.

Programmable Timers And Oscillators Feature Summary

• Monolithic low-power CMOS design with extremely low supply current (30µA typ at 2V).
• Wide operating supply voltage range from 2V to 18V.
• TTL and CMOS compatible outputs with no crowbarring of supply during output transitions.
• Low THRESHOLD, TRIGGER, and RESET input currents.

Programmable Timers And Oscillators Applications

• Pulse generators
• Precision timing circuits
• Time delay generation
• Pulse-width modulation (PWM)
• Missing pulse detection

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'ESA+' against the manufacturer's ordering information to confirm the package type and RoHS compliance status. Ensure the required operating temperature range (-40°C to +85°C) matches the application environment. Cross-reference the datasheet revision history for any updates to electrical characteristics or absolute maximum ratings before finalizing procurement specifications.

Programmable Timers And Oscillators Selection Notes

Select this component when replacing standard bipolar 555 timers to reduce power consumption and eliminate the need for supply decoupling capacitors due to minimal current spikes. Consider the 8-SOIC package constraints for PCB layout. Verify that the external timing components support the high-impedance inputs to maintain low system supply current. Ensure the load requirements do not exceed the 100mA absolute maximum output current rating.

Programmable Timers And Oscillators Part Context

The ICM7555 is part of the ICM7555/ICM7556 family of general-purpose timers. The ICM7555 provides a single timer channel, whereas the ICM7556 offers dual channels in a 14-pin package. Both devices share the same CMOS architecture and core functionality, differing primarily in pin count and internal channel isolation. This series serves as a low-power alternative to traditional bipolar 555 timers.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other CMOS 555 variants such as the LMC555 or TLC555, provided they meet the 2V-18V supply range and SOIC-8 package requirements. Verify pin compatibility and ensure the substitute device supports the required 500kHz oscillation frequency and low input current specifications.