XD556 – Timer / Oscillator IC – Xinluda

The Xinluda XD556 is a 556-type dual timer IC in a DIP-14 package, integrating two independent timing circuits for monostable and astable oscillator applications. Now end-of-life and hard to source.

The Xinluda XD556 is a dual timer integrated circuit built to the industry-standard 556 architecture. It combines two independent timing circuits (functionally equivalent to two 555 timers) in a single DIP-14 package, sharing only the supply and ground pins. Each timer can be configured for either monostable (one-shot) operation to generate time delays, or astable operation as a free-running oscillator, making the XD556 a versatile building block for timing, pulse generation, and clock applications.

This part is supplied by Xinluda Information Technology Co., Ltd. and carries an End-of-Life (EOL) status, with little to no authorized-distributor stock remaining. Pacific Component Xchange supports buyers who need this obsolete component for legacy production, maintenance, and repair programs.

Key Features

• 556-type dual timer architecture: two independent timing circuits in one package
• Suitable for both monostable (one-shot) and astable (oscillator) configurations
• DIP-14 through-hole package for legacy board designs and easy hand assembly
• Operating temperature range: 0°C to +70°C (commercial)
• RoHS compliant
• Pin-compatible with the standard 556 / NE556 / LM556 dual-timer family

Applications

• Time-delay and one-shot timing circuits
• Free-running pulse and clock oscillators
• Pulse-width and pulse-position modulation
• Sequential timing and delay chains
• Industrial control, test equipment, and legacy electronics maintenance

Why Source XD556 from Pacific Component Xchange

The XD556 is an obsolete, hard-to-find part with minimal authorized-distributor availability. As an independent distributor specializing in hard-to-find power-management ICs, timers, and optocouplers, Pacific Component Xchange helps engineers and procurement teams secure the components their designs depend on. We focus on authenticity and quality, supported by inspection and traceability processes, and we ship worldwide to keep production and service programs running.

Pricing on the XD556 is by quote. Submit an RFQ to Pacific Component Xchange with your required quantity and target date, and our sourcing team will respond with current availability and lead time for this dual timer IC.