ICM7556ISD-T

Programmable Timers And Oscillators Overview

The ICM7556ISD-T is a dual general-purpose CMOS timer in a 14-pin SOIC package. It integrates two independent RC timers capable of generating accurate time delays or frequencies. The device operates on a supply voltage range of 2V to 18V, with a typical supply current of 60µA at 2V and 240µA at 18V. It supports a guaranteed maximum oscillation frequency of 500kHz. The component features low input currents for threshold, trigger, and reset pins, ensuring minimal power consumption. It is designed for battery-powered systems and offers TTL compatibility without requiring external decoupling capacitors on the control voltage pin.

Programmable Timers And Oscillators Feature Summary

• Dual monolithic low-power CMOS design integrating two independent timers
• Wide operating supply voltage range from 2V to 18V
• Low supply current: typically 60µA at 2V and 240µA at 18V
• Guaranteed maximum oscillation frequency of 500kHz

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the obsolete status of the ICM7556ISD-T before procurement. Confirm that the 'T' suffix indicates tape-and-reel packaging. Ensure the replacement part number matches the required 14-SOIC package and electrical specifications. Check for RoHS compliance documentation if required by the manufacturing process.

Programmable Timers And Oscillators Selection Notes

Select this component when a dual-timer solution is required with ultra-low power consumption. It serves as a direct pin-compatible replacement for bipolar NE556 timers but requires attention to output drive capabilities. The CMOS architecture allows for higher impedance timing components, reducing system current. Verify that the load requirements do not exceed the CMOS output source/sink limits compared to bipolar alternatives.

Programmable Timers And Oscillators Part Context

The ICM7556 is the dual-channel version of the ICM7555 single-channel timer. Both belong to the Maxim Integrated CMOS 555 family, offering significant power advantages over standard bipolar 555/556 devices. The ICM7556ISD-T variant specifically denotes the surface-mount SOIC package with tape-and-reel shipping. This series is widely used in applications where battery life and low quiescent current are critical design constraints.

Programmable Timers And Oscillators Replacement Considerations

Direct replacement: ICM7556ISD+T. Similar alternative: TLC556IDR.