ICM7556MJD

Programmable Timers And Oscillators Overview

The ICM7556MJD is a dual CMOS timer and oscillator manufactured by Renesas Electronics Corporation. It provides two independent 555-type timing circuits within a single 14-CDIP package. The device operates on a supply voltage range of 2V to 18V with a typical supply current of 120 µA. It supports frequencies up to 1MHz and functions in both astable and monostable modes. The component is rated for an operating temperature range of -55°C to 125°C, suitable for industrial environments. This product is currently listed as obsolete.

Programmable Timers And Oscillators Feature Summary

• Dual 555-type timer configuration in a 14-pin ceramic dual in-line package (CDIP)
• Wide operating supply voltage range from 2V to 18V
• Low power consumption with typical supply current of 120 µA
• Extended industrial temperature rating from -55°C to 125°C

Programmable Timers And Oscillators Applications

• Precision timing circuits requiring dual channels
• Pulse generation and sequential timing systems
• Time delay generation modules
• Pulse width modulation (PWM) applications

Programmable Timers And Oscillators Procurement Notes

The ICM7556MJD is officially marked as obsolete by the manufacturer. Verification of availability requires checking distributor inventories for remaining stock or surplus channels. Buyers must confirm the specific manufacturing date code and physical condition of the units, as lead times are not applicable for discontinued items. Cross-referencing with equivalent active components is recommended for new designs.

Programmable Timers And Oscillators Selection Notes

Select this component when a dual-channel timing solution is required in a through-hole ceramic package. Ensure the design accommodates the 14-CDIP footprint and verifies compatibility with the 2V–18V supply range. Consider the 1MHz maximum frequency limit for high-speed applications. Verify that the extended temperature range meets the environmental requirements of the target system.

Programmable Timers And Oscillators Part Context

This part belongs to the ICM7556 family of CMOS timers, which serve as low-power replacements for standard bipolar 555 timers. The 'MJD' suffix specifically denotes the 14-CDIP package variant. The series offers improved performance over legacy devices, including lower supply current and higher input impedance, allowing for smaller timing capacitors.

Programmable Timers And Oscillators Replacement Considerations

As the ICM7556MJD is obsolete, verify pin-compatible alternatives such as the ICM7556ISD+ from Analog Devices/Maxim Integrated. Check if other manufacturers offer dual CMOS timers with matching 14-pin DIP packages and similar electrical specifications.