D2732A 2732A / UVPROM, 4KX8, 200ns, MOS, CDIP24 memory IC

The D2732A UV-Erasable Programmable Read-Only Memory (EPROM) is a classic and highly reliable semiconductor device that remains a staple for vintage computing enthusiasts and industrial maintenance professionals. Featuring a storage capacity of 32,768 bits, organized as 4,096 words by 8 bits, this memory IC provides the essential firmware storage required for a vast array of legacy systems. The D2732A is built using high-performance MOS technology, ensuring stable data retention and reliable read operations over decades of use. Its 200ns access time was groundbreaking at its release and remains perfectly compatible with the timing requirements of classic 8-bit and 16-bit microprocessors like the Z80, 6502, and 8085. For those involved in the restoration of arcade machines, early home computers, or vintage industrial controllers, the D2732A is an indispensable component.

One of the most distinctive features of the D2732A is its CDIP24 ceramic package, which includes a transparent quartz window. This window is not merely decorative; it allows the internal memory cells to be exposed to high-intensity ultraviolet light, which erases the stored data and permits the chip to be reprogrammed. This erasability makes the D2732A an incredibly versatile tool for developers who need to iterate on firmware or for technicians who need to update legacy code in the field. The ceramic dual-in-line package (CDIP) also offers superior thermal properties and environmental protection compared to standard plastic packages, ensuring that the chip can withstand harsh operating conditions. This level of physical durability is one of the reasons why so many of these chips are still functional in equipment that is over thirty years old.

The D2732A is designed for ease of use in both programming and read modes. It operates on a standard single +5V power supply for read operations, making it compatible with most logic circuits of its era. During the programming phase, a higher voltage is applied to the Vpp pin, allowing data to be permanently burned into the memory cells until the next UV erasure cycle. The 4K x 8 architecture is ideal for storing small operating systems, BIOS code, or lookup tables for industrial automation. Because it is a non-volatile memory, it retains its data even when power is completely removed, ensuring that your critical system code is always ready the moment the device is switched on. This reliability is why the 2732A series became an industry standard for firmware storage across multiple sectors.

In the modern era, the D2732A has found a second life in the retro-gaming and maker communities. It is the primary memory chip used in many classic arcade game boards and early console cartridges, where it holds the game logic and graphical data. Hobbyists frequently use these chips to create custom ROMs or to repair damaged boards that have suffered from bit-rot or physical failure. The 200ns speed rating of the D2732A variant ensures that it can keep up with the bus speeds of most vintage hardware without needing wait states, providing a smooth and authentic user experience. Furthermore, its standard 24-pin footprint makes it a direct drop-in replacement for other 2732 series chips, simplifying the repair process for technicians and hobbyists who are working to preserve technological history.

When sourcing a D2732A, it is vital to select high-quality, reliable units that have been properly handled and stored. Our D2732A memory ICs are carefully inspected to ensure that the quartz window is clear and the pins are intact, ready for insertion into a programmer or a vintage PCB. As these components are no longer in mass production, they represent a finite resource for the preservation of legacy electronics. By maintaining a stock of these essential EPROMs, we support the community of engineers and restorers who keep classic technology alive. Whether you are patching a 1980s-era CNC machine or restoring a beloved arcade cabinet, this memory IC provides the authentic performance and reliability you need to get the job done right. Its proven track record and robust design make it a trustworthy choice for any project.

Don't let your classic hardware sit idle due to a failed memory chip. Purchase the D2732A UV-Erasable EPROM today and restore your systems to their former glory. With its 32K capacity and 200ns speed, it is the perfect solution for firmware replacement and custom programming tasks. Our commitment to providing high-quality vintage semiconductors ensures that you receive a component that meets the original manufacturer's specifications. Stocks of these classic CDIP24 chips are limited, so act now to secure the parts you need for your upcoming restoration projects. Experience the satisfaction of working with genuine legacy hardware and keep the spirit of early computing alive. Order your D2732A EPROMs now and benefit from our specialized knowledge and fast shipping on all electronic components. Your legacy projects deserve the very best in memory technology.