NJM555M

Programmable Timers And Oscillators Overview

The NJM555M is a monolithic timing circuit manufactured by Nisshinbo Micro Devices Inc. in the DMP-8 surface-mount package. It operates within a supply voltage range of 4.5V to 16V and supports an operating temperature range from -40°C to +85°C. The device utilizes bipolar technology to provide accurate time delays or oscillation with minimal external components. Key electrical characteristics include an operating current of up to 15mA at 15V, a threshold voltage of two-thirds of the supply voltage, and an output capable of sourcing or sinking up to 200mA. The component is designated as a discontinued product for existing customers.

Programmable Timers And Oscillators Feature Summary

• Monolithic timer producing accurate time delays or oscillation
• Output current capability of up to 200mA for TTL drive
• Bipolar technology construction
• DMP-8 surface-mount package

Programmable Timers And Oscillators Applications

• Time delay generation
• Pulse generation
• Oscillator circuits
• PWM applications

Programmable Timers And Oscillators Procurement Notes

This component is officially discontinued by the manufacturer. Availability is restricted to existing customers currently utilizing the part, subject to a limited time frame. New project designs should not incorporate this item. Verification of specific stock status requires direct contact with regional sales offices, as standard distribution channels do not list active inventory.

Programmable Timers And Oscillators Selection Notes

Select the NJM555M only for maintenance or replacement of legacy systems where the DMP-8 package is mandatory. For new designs, alternative timers must be chosen due to discontinuation. Ensure the application operates within the 4.5V to 16V supply range and -40°C to +85°C temperature limits. Verify that the required output current does not exceed the 200mA sink/source rating.

Programmable Timers And Oscillators Part Context

The NJM555M belongs to the NJM555 series of timers, which are equivalents to the industry-standard 555 timer. The 'M' suffix specifically denotes the DMP-8 surface-mount package variant. Other variants in the series include DIP8, SSOP8, and SIP8 packages. The series is characterized by low power consumption and high stability using bipolar technology.

Programmable Timers And Oscillators Replacement Considerations

No public substitute part numbers are provided in the documentation. Designers must identify compatible 555-timer equivalents independently. Ensure any replacement matches the DMP-8 footprint if board space is constrained, or verify pin compatibility for other packages.