NE555DE4

Overview

The NE555DE4 is a single precision timer integrated circuit manufactured by Texas Instruments, belonging to the NE555 family. It operates within a supply voltage range of 4.5V to 16V and supports a maximum frequency of 100kHz. The device draws 10mA of supply current and functions reliably across an operating temperature range of 0°C to 70°C. Packaged in an 8-SOIC surface-mount format with a width of 3.90mm, this component is classified as obsolete and no longer in production.

Feature Summary

• Single-channel 555-type timer/oscillator IC
• 8-SOIC surface-mount package (3.90mm width)
• Supply voltage range: 4.5V to 16V
• Operating temperature: 0°C to 70°C

Applications

• Precision timing circuits
• Pulse generation
• Time delay generation
• Frequency division
• Waveform generation

Procurement Notes

The NE555DE4 is officially marked as obsolete and discontinued by Texas Instruments. Procurement must rely on third-party distributors for remaining stock or alternative sources. Verification of part authenticity and storage conditions is critical due to the component's end-of-life status. Buyers should confirm the specific manufacturing date code and ensure compliance with RoHS3 standards before acquisition.

Selection Notes

Designers requiring active components should consider the LM555CM/NOPB or LM555CMX/NOPB from Texas Instruments as direct replacements within the same product family. These alternatives offer similar electrical characteristics and pin compatibility while maintaining current manufacturing support. For low-power applications, CMOS variants such as the LMC555 series may be evaluated based on specific power consumption requirements.

Part Context

The NE555DE4 is a variant of the widely used NE555 timer series, distinguished by its DE4 suffix indicating specific packaging and environmental compliance attributes. As a bipolar timer, it provides robust performance for general-purpose timing tasks. The component represents a legacy surface-mount option for designs originally developed during the era when SOIC packages were standard for this class of analog timers.

Replacement Considerations

Public confirmed substitutes include LM555CM/NOPB, LM555CMX/NOPB, and LMC555CMX/NOPB from Texas Instruments. These parts are listed as similar replacements in distributor databases.