ICM7556ISD+T

Programmable Timers And Oscillators Overview

The ICM7556ISD+T is a dual general-purpose RC timer manufactured by Analog Devices Inc./Maxim Integrated. It integrates two CMOS timers in a 14-SOIC package with tape-and-reel packaging. The device operates within a supply voltage range of 2V to 18V and supports an operating temperature range of -20°C to +85°C. Key electrical parameters include a maximum oscillation frequency of 500kHz, a typical supply current of 120µA at 2V, and a power dissipation limit of 300mW. The output stage provides 100mA drive capability and is compatible with both CMOS and TTL logic families.

Programmable Timers And Oscillators Feature Summary

• Dual monolithic low-power CMOS design for accurate time delays or frequencies
• Wide operating supply voltage range from 2V to 18V
• Low supply current (typical 120µA at 2V) ideal for battery-powered systems
• TTL compatible outputs with 100mA drive capability

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm that the manufacturer designation matches Analog Devices Inc./Maxim Integrated to ensure authenticity. Check for RoHS compliance status associated with the '+' suffix in the part number during procurement processes.

Programmable Timers And Oscillators Selection Notes

Select the ICM7556ISD+T when dual independent timers are required in a surface-mount application. Ensure the design accommodates the -20°C to +85°C industrial temperature range. Verify that external timing components support the desired frequency up to the 500kHz maximum limit while maintaining the specified accuracy drift characteristics.

Programmable Timers And Oscillators Part Context

This component belongs to the ICM7556 series, which serves as a dual-timer variant of the single-timer ICM7555. Both devices offer significant performance advantages over standard bipolar 555/556 timers, including lower power consumption and negligible current spikes during output transitions. The SOIC-14 package allows for compact PCB layouts compared to through-hole alternatives.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include the ICM7556ISD+ (tube packaging) and ICM7556ISD-T (obsolete). Similar functional substitutes from other manufacturers include the TLC556CD and TLC556IDR from Texas Instruments.