ICM7555CN/01,112

Programmable Timers And Oscillators Overview

The ICM7555CN/01,112 is a CMOS general-purpose 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 features low supply current (typical 80 µA) and extremely low input currents (typical 20 pA). It supports high-speed operation up to 500 kHz and provides rail-to-rail outputs capable of driving TTL or CMOS loads. The component is housed in an 8-lead plastic dual in-line package (DIP8) and is rated for an ambient temperature range of 0 °C to +70 °C.

Programmable Timers And Oscillators Feature Summary

• Low supply current: 80 µA typical
• Extremely low trigger, threshold, and reset currents: 20 pA typical
• High-speed operation: 500 kHz guaranteed
• Wide operating supply voltage range: 3 V to 16 V
• Rail-to-rail outputs

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 ordering suffix against the manufacturer's latest documentation to confirm package type and temperature rating. The CN designation indicates a DIP8 package with a commercial temperature range. Ensure compatibility with existing PCB footprints for through-hole mounting. Check for any recent product change notifications regarding manufacturing updates.

Programmable Timers And Oscillators Selection Notes

Select this component when a CMOS-based timer is required to replace bipolar 555 timers for lower power consumption. It is suitable for applications requiring precise timing from microseconds to hours using external RC components. Consider the 0 °C to +70 °C operating range for environmental constraints. The DIP8 package is appropriate for prototyping or applications utilizing through-hole technology.

Programmable Timers And Oscillators Part Context

The ICM7555 series represents a CMOS evolution of the classic 555 timer architecture. Unlike bipolar versions, it eliminates crowbar currents during output transitions and does not require decoupling capacitors on the control voltage pin for stable operation. This allows for simplified circuit designs with fewer external components while maintaining accurate time delays and frequencies.

Programmable Timers And Oscillators Replacement Considerations

The ICM7555CN is functionally equivalent to the NE555 and SE555 in most applications. Direct replacements include other CMOS variants such as the ICM7555CD (SO8 package) or ICM7555IN (extended temperature range). Verify that the replacement part matches the required package style and operating temperature specifications.