Shenzhen Xinluda Information Technology Co., Ltd. Electronic Parts
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The Xinluda XD82C55-5 is a CMOS Programmable Peripheral Interface (PPI) that is functionally compatible with the long-running, industry-standard 82C55A / 8255A family. It is a general-purpose, software-programmable parallel I/O device originally designed for 8080/8085-class microprocessor buses and widely reused today in legacy system maintenance, industrial controllers, instrumentation, and retro-computing designs. The “-5” suffix denotes the 5 MHz speed grade, matching the classic 8255A-5 / 82C55-5 timing rating.
The device organizes 24 programmable I/O pins into three 8-bit ports—Port A, Port B, and Port C—which may be individually programmed in two groups of 12. Each group is independently configurable in software, allowing the part to be tailored to a wide range of TTL-compatible interfacing tasks without external glue logic.
The XD82C55-5 and other 82C55A-class PPI devices are increasingly hard to find through authorized distribution, making them a common pain point for engineers maintaining or refurbishing legacy hardware. Pacific Component Xchange is an independent distributor that specializes in sourcing scarce, end-of-life, and hard-to-find interface devices and peripheral controllers like the XD82C55-5.
When you source the XD82C55-5 through Pacific Component Xchange, you gain access to our global supply network for obsolete and allocation-constrained parts, authenticity and quality verification, and worldwide shipping. Because this is a Request-For-Quote (RFQ) item, pricing and current stock are confirmed per inquiry. Submit an RFQ today and our sourcing team will respond with availability, lead time, and a competitive quote for your required quantity.
The XD82C55-5 is Xinluda's CMOS Programmable Peripheral Interface (PPI), functionally compatible with the industry-standard 82C55A/8255A. It provides 24 programmable parallel I/O lines arranged in three 8-bit ports and operates from a single 5 V supply in a DIP-40 package.
The '-5' suffix denotes the 5 MHz speed grade, matching the timing rating of the classic 8255A-5 / 82C55-5 devices. It indicates the part is rated for operation at a 5 MHz bus speed, supporting no-wait-state operation with 80C86/80C88-class processors.
Yes. The XD82C55-5 is a Xinluda variant designed to be functionally and pin compatible with the 82C55A/8255A Programmable Peripheral Interface, including the three 8-bit ports and the three programmable operating modes (Mode 0, Mode 1, and Mode 2).
It is supplied in a 40-pin dual in-line package (DIP-40), consistent with the standard 8255A pinout.
The device supports three modes: Mode 0 for basic input/output, Mode 1 for strobed input/output with handshaking, and Mode 2 for strobed bidirectional bus operation using Port A with Port C providing control and status signals. Port C also supports direct bit set/reset.
The XD82C55-5 is a Request-For-Quote (RFQ) item because it has limited authorized-distributor availability. Submit an RFQ to Pacific Component Xchange and our sourcing team will respond with current availability, lead time, and pricing for your required quantity.
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