XD14553 – 3-Digit BCD Counter – Xinluda

About this part

The XD14553 is a CMOS 3-digit BCD counter manufactured by Xinluda, functionally equivalent to the industry-standard CD4553 / MC14553B. It consists of three negative-edge-triggered BCD counters cascaded synchronously, each followed by a quad latch that allows storage of any given count. Built-in digit-multiplexing logic and an on-chip oscillator make the device well suited for compact, low-cost digital display and counting applications. The XD14553 is supplied in a through-hole DIP-16 package.

Key Features

• 3-digit BCD counter (CD4553 / MC14553B type) with three synchronously cascaded, negative-edge-triggered decade counters
• Quad latch at the output of each counter for storage of any given count
• On-chip oscillator for the multiplexing scan clock (external capacitor between pins 3 and 4 sets the frequency, or drive an external clock at pin 4)
• Multiplexed BCD outputs (active high) with active-low digit-select (DS1-DS3) lines for direct multi-digit display driving
• Overflow output providing one pulse per 1000 counts for cascading multiple devices
• Clock Disable (inhibit) input and Master Reset
• TTL-compatible outputs
• Pulse-shaping circuit at the clock input permits very slow input clock rise times
• On-chip protection circuitry against high static voltages and electric fields
• DIP-16 through-hole package

Applications

• Multi-digit LED / LCD counter displays
• Frequency counters and tachometers
• Digital panel meters and instrumentation
• Event and pulse counting systems
• Clock displays and general logic building-block applications

Why Source XD14553 from Pacific Component Xchange

The XD14553 is a Xinluda-branded part with limited authorized-distributor coverage, which can make it difficult to source through mainstream channels. Pacific Component Xchange specializes in hard-to-find and end-of-life logic, power-management, and optocoupler components, giving engineers and buyers a reliable path to parts that are otherwise scarce. Every order is backed by our authenticity and quality-assurance process, and we ship worldwide to support both prototype and production needs.

Need the XD14553 or a CD4553/MC14553B-compatible alternative? Request a quote (RFQ) from Pacific Component Xchange and our sourcing team will confirm availability, lead time, and pricing for your required quantity.