XD14518 – Dual BCD Up Counter – Xinluda

The Xinluda XD14518 is a CMOS dual synchronous BCD (decade) up counter in a 16-pin DIP package, functionally equivalent to the industry-standard CD4518 / MC14518. Available for quote at Pacific Component Xchange.

The Xinluda XD14518 is a CMOS dual BCD up counter from the popular 4000-series logic family, supplied in a through-hole 16-pin DIP package. It is a pin-for-pin and functional equivalent of the industry-standard CD4518 / MC14518 dual decade counter, making it a convenient drop-in option for legacy and cost-sensitive digital designs. Each device integrates two identical, independent, and internally synchronous 4-stage counters built from D-type flip-flops.

Each counter offers interchangeable CLOCK and ENABLE lines, allowing the stage to increment on either a positive-going or negative-going transition. For single-unit operation the ENABLE input is held high and the counter advances on each rising edge of the CLOCK. A master RESET input clears all four stages of a counter to zero independently. The wide CMOS supply range and diode-protected inputs make the XD14518 well suited to timers, frequency dividers, and general-purpose counting applications.

Key Features

• Dual BCD (decade) up counter — two independent 4-stage synchronous counters per package
• CMOS 4000-series logic; functional/pin equivalent of CD4518 / MC14518
• Wide operating supply voltage range of 3 V to 18 V (per Xinluda datasheet)
• Interchangeable CLOCK and ENABLE inputs for positive- or negative-edge triggering
• Independent active-high master RESET on each counter
• Diode-protected inputs; suited to synchronous or ripple counting
• 16-pin DIP (through-hole) package
• RoHS compliant

Applications

• Decade and BCD counting circuits
• Frequency division and clock dividers
• Digital timers and time-base generators
• Event and pulse counters
• General-purpose digital logic and instrumentation

Why Source XD14518 from Pacific Component Xchange

The Xinluda XD14518 sees little to no authorized-distributor stock, which makes it difficult to source through mainstream channels. Pacific Component Xchange specializes in hard-to-find and obsolete logic and power-management ICs, giving engineers and buyers a reliable path to the parts they need. Every order is backed by our authenticity and quality assurance process, with worldwide shipping to keep your production line moving.

Need the XD14518 or a CD4518 / MC14518 equivalent? Request a quote (RFQ) from Pacific Component Xchange and our sourcing team will respond with availability, lead time, and pricing for your required quantity.