XL339 – Quad Voltage Comparator – Xinluda

The Xinluda XL339 is a quad differential voltage comparator (an LM339-class device) with four independent comparators, open-collector outputs, and a wide single-supply operating range up to 36V in an SOP-14 package.

The XL339 from Xinluda Information Technology is a quad differential voltage comparator that integrates four independent precision comparators in a single package. It is a functional equivalent of the industry-standard LM339 and belongs to Xinluda’s XL239 / XL339 / XL2901 quad-comparator family. The device is designed to operate from a single power supply over a wide voltage range, with a common-mode input range that includes ground, making it well suited to single-supply systems where the input signal can swing down to the negative rail.

Each of the four comparators features an open-collector output that is compatible with TTL, MOS, and CMOS logic, allowing wired-AND connections and flexible level translation with an external pull-up resistor. Low input offset voltage and low input bias current support accurate threshold detection across a broad supply range.

Key Features

• Four independent voltage comparators in one package
• Wide single-supply operating range, maximum rating up to 36V
• Output compatible with TTL, MOS, and CMOS logic (open-collector output stage)
• Low input offset voltage: 2 mV (typical)
• Low input bias current: 25 nA (typical)
• Low supply current: approximately 0.4 mA per comparator (typical)
• Common-mode input voltage range includes ground
• Functional equivalent to the LM339 / 239 / 2901 quad comparator family
• SOP-14 surface-mount package

Applications

• Single-supply analog threshold and level detection
• Zero-crossing and window comparators
• Analog-to-digital signal conditioning and waveform squaring
• Oscillators, timers, and pulse generation
• Battery and voltage monitoring / supervisory circuits
• Industrial, consumer, and general-purpose control electronics

Why Source XL339 from Pacific Component Xchange

The XL339 is a Xinluda-branded part with limited authorized-distributor coverage outside of Asia, which can make it difficult to source reliably for production builds, EOL replacements, and cross-references to the LM339. Pacific Component Xchange is an independent distributor specializing in hard-to-find and obsolete power-management ICs, comparators, and optocouplers. We help engineers and buyers secure stock of scarce parts like the XL339 with authenticity verification, global shipping, and responsive support.

Pricing on this part is quote-based. Request an RFQ from Pacific Component Xchange for current availability, lead time, and volume pricing on the XL339 and equivalent LM339-family comparators.