ICM7555ESA+T

Programmable Timers And Oscillators Overview

The ICM7555ESA+T is a single general-purpose CMOS timer in an 8-SOIC surface-mount package. It operates on a supply voltage of 2V to 16.5V with a typical supply current of 30µA at 5V. The device supports a maximum oscillation frequency of 500kHz and provides a 10mA output drive capability. It functions as a monostable or astable timer, featuring TTL compatibility and low input currents for the TRIGGER, THRESHOLD, and RESET pins.

Programmable Timers And Oscillators Feature Summary

• Low-power CMOS design with supply current as low as 30µA
• Wide operating voltage range from 2V to 16.5V
• Guaranteed maximum oscillation frequency of 500kHz
• TTL compatible with 10mA output drive capability

Programmable Timers And Oscillators Applications

• Precision timing circuits
• Time delay generation
• Pulse-width modulation (PWM)
• Sequential timing systems

Programmable Timers And Oscillators Procurement Notes

Verify that the 'T' suffix indicates tape-and-reel packaging, distinct from tube packaging. Confirm the specific temperature grade (-40°C to +85°C) matches the ESA variant requirements. Ensure the component meets RoHS standards as indicated by the '+' suffix.

Programmable Timers And Oscillators Selection Notes

Select this part for battery-powered applications due to its ultra-low quiescent current. Use when high-impedance timing components are required to minimize system power consumption. Ensure the load does not exceed the 10mA output drive limit without external buffering.

Programmable Timers And Oscillators Part Context

This component belongs to the ICM7555 family, which serves as a low-power CMOS alternative to standard bipolar 555 timers. It eliminates the need for supply decoupling capacitors typically required by bipolar counterparts due to minimal crowbar currents during output transitions.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other ICM7555 variants such as ICM7555ESA or ICM7555ISA, provided the temperature range and packaging format are compatible. Bipolar 555 timers require additional decoupling circuitry for direct substitution.

Programmable Timers And Oscillators FAQ

Does the ICM7555ESA+T require supply decoupling capacitors?

No, supply decoupling is typically not needed because the CMOS design produces negligible current spikes during output transitions compared to bipolar timers.

What is the maximum oscillation frequency?

The guaranteed maximum oscillation frequency in astable operation is 500kHz.

How does the reset function differ from bipolar 555s?

The reset controls only the internal flip-flop, simultaneously setting the Output and Discharge states, which avoids threshold issues associated with slow-falling edges in bipolar devices.