ICM7555ID,623

Programmable Timers And Oscillators Overview

The ICM7555ID,623 is a general-purpose CMOS timer manufactured by NXP Semiconductors. It serves as a direct replacement for standard NE/SE555 timers with improved performance characteristics. The device operates within a supply voltage range of 3 V to 16 V and supports an ambient temperature range of -40 °C to +85 °C. Key electrical parameters include a typical supply current of 80 μA, extremely low trigger, threshold, and reset currents of 20 pA, and a guaranteed high-speed operation up to 500 kHz. It features rail-to-rail outputs capable of driving TTL or CMOS loads.

Programmable Timers And Oscillators Feature Summary

• Low supply current: 80 μA (typical)
• Extremely low input currents: 20 pA (typical) for TRIGGER, THRESHOLD, and RESET
• High-speed operation: 500 kHz guaranteed frequency
• Wide operating supply voltage range: 3 V to 16 V over full automotive temperatures

Programmable Timers And Oscillators Applications

• Precision timing
• Pulse generation
• Sequential timing
• Time delay generation
• Pulse width modulation

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix '623' against official NXP documentation to confirm packaging details such as tube quantity or reel specifications. Ensure the order matches the industrial temperature grade (-40 °C to +85 °C) required for the application. Cross-reference the manufacturer part number with distributor listings to confirm availability and authenticity before purchase.

Programmable Timers And Oscillators Selection Notes

Select the ICM7555ID variant when operation below 0 °C is required, as it covers the -40 °C to +85 °C range compared to the CD version's 0 °C to +70 °C range. The SO8 package is suitable for surface mount applications requiring a body width of 3.9 mm. Consider using higher-impedance timing elements to minimize total system supply current consumption during long time constants.

Programmable Timers And Oscillators Part Context

The ICM7555 series represents a CMOS improvement over the bipolar NE/SE555 timers. The ID designation specifically indicates the industrial temperature grade and SO8 package format. This component belongs to the broader family of general-purpose timers designed for accurate time delays and frequencies without the crowbar current issues associated with older bipolar designs.

Programmable Timers And Oscillators Replacement Considerations

The ICM7555 is documented as an exact equivalent in most applications for NE/SE555 devices. Designers should verify that external decoupling capacitors on the CONTROL_VOLTAGE terminal are no longer strictly necessary due to high input impedance.