ICM7555IN/01,112

Programmable Timers And Oscillators Overview

The ICM7555IN/01,112 is a general-purpose CMOS timer manufactured by NXP Semiconductors. It serves as a direct replacement for standard NE/SE555 timers with significantly improved performance parameters. The device operates within a supply voltage range of 3 V to 16 V and features a typical supply current of 80 µA. It guarantees high-speed operation up to 500 kHz and exhibits extremely low trigger, threshold, and reset currents of 20 pA (typical). The component provides rail-to-rail outputs capable of driving TTL or CMOS loads without requiring decoupling capacitors on the control voltage terminal.

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
• Rail-to-rail outputs with high source/sink drive capability

Programmable Timers And Oscillators Applications

• Precision timing circuits
• Pulse generation and modulation
• Sequential timing and time delay generation
• Missing pulse detection

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix '/01,112' against the manufacturer's current catalog to confirm package type and tape/reel specifications. Ensure compatibility with the required temperature range (-40°C to +85°C for the 'IN' variant) and check for any recent product change notices that may affect pinout or electrical characteristics.

Programmable Timers And Oscillators Selection Notes

Select this component when replacing bipolar 555 timers in battery-powered applications due to its low static current. Use the DIP-8 package for through-hole mounting requirements. Consider the high input impedance of the CMOS comparators, which allows for the use of higher-impedance timing elements compared to bipolar counterparts, potentially reducing external component count.

Programmable Timers And Oscillators Part Context

The ICM7555 series represents the CMOS evolution of the classic 555 timer architecture. Unlike the bipolar NE555, the ICM7555 eliminates crowbar currents during output transitions, simplifying power supply design. The 'IN' designation indicates an industrial temperature grade (-40°C to +85°C), while the 'DIP8' package provides a dual in-line form factor suitable for prototyping and legacy board designs.

Programmable Timers And Oscillators Replacement Considerations

Direct functional equivalent to NE555 and SE555 in most applications. Verify that the load does not exceed the 100 mA absolute maximum output current rating. Note that the CONTROL_VOLTAGE pin does not require decoupling, unlike the bipolar version.