XD4538 – Dual Monostable Multivibrator – Xinluda

The Xinluda XD4538 is a dual, precision monostable (one-shot) multivibrator in a DIP-16 package, featuring independent trigger and reset controls with a wide 3.0V to 15V supply range.

The XD4538 from Xinluda is a dual, precision monostable multivibrator (one-shot) implemented in CMOS and pin-compatible with the industry-standard 4538 / CD4538 family. Each of the two independent monostable sections offers retriggerable, resettable operation with internally latched control inputs, making the XD4538 a versatile timing element for pulse generation, debouncing, and delay applications. Output pulse width and accuracy are set by external timing components (R_X and C_X), and the device does not allow the timing capacitor to discharge through the timing pin on power-down, so no external protection resistor is needed in series with the timing pin.

Key Features

• Dual, precision monostable multivibrator (two independent one-shot sections)
• Wide supply voltage range: 3.0V to 15V
• Retriggerable and resettable operation with internally latched control inputs
• Two trigger inputs allow either rising-edge or falling-edge triggering
• Active-LOW reset inputs prevent triggering while active
• High noise immunity: 0.45 V_CC (typ.)
• Low-power TTL compatibility (fan-out of 2 driving 74L or 1 driving 74LS)
• Pulse width set by external R_X and C_X; no external timing-pin protection resistor required
• Input protection from static discharge on all pins
• Operating temperature range: -55°C to +125°C
• 16-pin DIP package (V_DD = pin 16, V_SS = pin 8)

Applications

• Precision pulse-width / one-shot pulse generation
• Timing delays and monostable timing circuits
• Switch and contact debouncing
• Frequency dividers and pulse shaping
• Missing-pulse detection and watchdog timing
• General-purpose CMOS logic and industrial control timing

Why Source XD4538 from Pacific Component Xchange

The Xinluda XD4538 is a hard-to-find part with little to no authorized-distributor stock, which can stall production runs and legacy-board repairs. Pacific Component Xchange specializes in sourcing scarce and obsolete power-management ICs and logic components like the XD4538. We support buyers who need reliable access to allocated, end-of-life, and low-availability parts, with a focus on authenticity verification, careful inspection, and global shipping. Whether you need a small quantity for a repair or volume for a production build, our team can locate genuine inventory and provide a fast quote.

Request a quote (RFQ) today and let Pacific Component Xchange handle the hard-to-find sourcing for your XD4538 requirements.