CDP1851E HARRIS INTEGRATED CIRCUIT DIP-28 CDP1851

The CDP1851E, manufactured by Harris, is a versatile and historically significant integrated circuit housed in a DIP-28 package. This CMOS programmable I/O device was a key component in many early microprocessor-based systems, providing essential interface capabilities between the CPU and peripheral devices. Its robust design and flexible configuration options made it a popular choice for a wide range of applications, from industrial control systems to consumer electronics. The CDP1851E is known for its reliability and ease of use, making it a valuable asset for both hobbyists and professional engineers working with legacy systems.

At its core, the CDP1851E functions as a programmable input/output port, allowing the microprocessor to communicate with external devices such as sensors, actuators, and displays. It features multiple I/O lines that can be individually configured as either inputs or outputs, providing a high degree of flexibility in system design. The device is controlled by a set of internal registers that are accessed through the microprocessor's address and data buses. This allows the CPU to dynamically configure the I/O ports to meet the specific needs of the application. The CDP1851E also includes interrupt handling capabilities, enabling it to signal the CPU when an external event occurs.

The CDP1851E found widespread use in early computer systems, industrial automation equipment, and consumer electronics devices. In industrial settings, it was often used to interface with sensors and actuators, allowing the control system to monitor and control various processes. In consumer electronics, it was employed in devices such as printers, keyboards, and displays, providing the necessary interface between the CPU and the peripheral devices. Its versatility and ease of use made it a popular choice for hobbyists and experimenters, who used it to build custom electronic projects. The CDP1851E's historical significance lies in its contribution to the development of early microprocessor-based systems.

Key specifications of the CDP1851E include a wide operating voltage range, typically from 4 to 12 volts, making it compatible with a variety of power supplies. It features a low power consumption, which is essential for battery-powered applications. The device also offers a high degree of noise immunity, ensuring reliable operation in noisy environments. Its DIP-28 package facilitates easy integration into existing circuit designs. The CDP1851E is designed to meet stringent industry standards for reliability and performance, providing peace of mind for designers and end-users alike. Its long-term availability and consistent performance make it a valuable asset in any application requiring flexible I/O capabilities.

In summary, the CDP1851E Harris integrated circuit in a DIP-28 package is a versatile and historically significant I/O device designed for a wide range of applications. Its flexible configuration options, robust design, and ease of use make it an ideal choice for both legacy systems and new designs. Whether you are working with an early computer system, an industrial automation project, or a custom electronic device, the CDP1851E offers the reliability and performance you need. Invest in the CDP1851E today and experience the peace of mind that comes with knowing your system is supported by a proven I/O solution. Order now to enhance the flexibility and functionality of your electronic designs.