ICM7556I/D

Programmable Timers And Oscillators Overview

The ICM7556I/D is a dual CMOS timer integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It contains two independent 555-type timers within a single package, supporting frequencies up to 500 kHz. The device operates on a supply voltage range of 2 V to 18 V and draws a typical supply current of 60 µA. It features both CMOS and TTL-compatible outputs and is available in a 14-pin PDIP package with a maximum power dissipation of 300 mW. The component functions reliably across an operating temperature range from -20°C to +85°C.

Programmable Timers And Oscillators Feature Summary

• Dual 555-type timer configuration in a single 14-pin package
• Low-power CMOS technology with 60 µA supply current
• Wide supply voltage operation from 2 V to 18 V
• CMOS and TTL output compatibility

Programmable Timers And Oscillators Applications

• General-purpose timing circuits
• Pulse generation and waveform shaping
• Sequential timing events
• DC frequency shifting

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix (IPD+ or ISD+) for the exact package type required, as the base model covers multiple variants. Confirm RoHS compliance status through official datasheets. Check manufacturer lifecycle notices for obsolescence warnings, particularly regarding tape-and-reel versus tube packaging options.

Programmable Timers And Oscillators Selection Notes

Select the ICM7556I/D when two independent timers are needed in a compact form factor. Ensure the application voltage stays within the 2 V to 18 V range. Consider the 14-pin PDIP package for through-hole mounting or SOIC for surface mount if using the ISD variant. Verify thermal requirements against the 300 mW power dissipation limit.

Programmable Timers And Oscillators Part Context

This component belongs to the ICM7555/56 series, which are CMOS versions of the standard 555/556 timers. The ICM7556 specifically provides dual timers, whereas the ICM7555 offers a single timer. Both share similar electrical characteristics but differ in pin count and internal structure.

Programmable Timers And Oscillators Replacement Considerations

TLC556CD and TLC556IDR from Texas Instruments are listed as similar alternatives. These parts offer comparable dual-timer functionality and may serve as direct replacements depending on package and voltage requirements.