CDP6402D

Overview

The CDP6402D is a CMOS Universal Asynchronous Receiver/Transmitter (UART) manufactured by Harris Corporation. It facilitates serial data communication between parallel microprocessor buses and asynchronous serial channels. The device supports baud rates up to 500 Kbps with a maximum clock frequency of 8 MHz. It features an integrated receiver for decoding start, data, parity, and stop bits, and a transmitter for serializing parallel data. The component operates within a temperature range of -55°C to +125°C and utilizes a 28-pin Ceramic Dual In-Line Package (CDIP).

Feature Summary

• Asynchronous serial interface conversion between parallel processor data and serial bit streams.
• Integrated parity generation and checking logic supporting odd or even configurations.
• Configurable data word lengths ranging from 5 to 8 bits per character.

Applications

• Modem control interfaces
• Printer port connections
• Remote data acquisition systems

Procurement Notes

Verify the specific manufacturer origin, as Harris Corporation assets were acquired by Renesas Technology. Confirm that the component matches the original Intersil/Harris specifications regarding pinout and electrical characteristics. Ensure the package type corresponds to the required ceramic dual in-line form factor for the target application.

Selection Notes

Select this component when a dedicated UART is required for low-power asynchronous communication in industrial environments. The wide operating temperature range makes it suitable for harsh conditions. Verify compatibility with the system's voltage levels and clock requirements before integration into the design.

Part Context

This part belongs to the CDP64xx series of serial controllers produced by Harris Corporation. These components are designed to bridge the gap between high-speed parallel processing and slower serial transmission lines. The series includes variants optimized for different baud rate capabilities and interface requirements.

Replacement Considerations

Potential substitutes include the HD-6402 and CD1889. Verify functional equivalence regarding baud rate support and pin configuration. Ensure that any replacement maintains the same ceramic package dimensions and thermal performance ratings.