NXP PCA9665D Parallel Bus to I2C-Bus Protocol Converter

The PCA9665D is a versatile and robust protocol converter designed by NXP Semiconductors, aimed at bridging parallel bus interfaces to the widely adopted I2C-bus interface. This integrated circuit (IC) is particularly well-suited for applications where an I2C-bus needs to be driven over long cables or when multiple I2C devices need to be connected. The PCA9665D is engineered to enhance the capabilities of the I2C-bus by providing higher data rates, extended communication distances, and improved noise immunity.

Key Features:

• Compatibility: The PCA9665D is fully compliant with the I2C-bus specification and supports I2C-bus modes such as Fast-mode Plus (Fm+), with speeds up to 1 Mbit/s, and Standard-mode (Sm), with speeds up to 100 kbit/s.
• Extended Range: Thanks to its advanced design, the PCA9665D can drive I2C communication over longer distances than standard I2C devices, making it ideal for complex industrial environments or extended systems.
• Parallel Interface: The device features a parallel-bus interface that can be easily connected to a microcontroller or other parallel-bus host, enabling seamless integration into existing designs.
• Buffered Operation: It includes internal oscillator and voltage level shifters, which allow for buffered operation and ensure signal integrity over extended distances.
• Multi-master Capability: The PCA9665D supports multi-master systems and provides arbitration and collision detection features to ensure data integrity in a multi-master environment.
• Versatility: It is suitable for a variety of applications, including industrial control, automotive networks, and complex consumer electronics systems.

Package and Supply Voltage:

The PCA9665D comes in a small SO8 package, which is optimal for space-constrained applications. It operates over a supply voltage range of 2.3 V to 5.5 V, accommodating a broad spectrum of logic levels and making it adaptable to various system requirements.

Conclusion:

With its robust feature set and flexible design, the NXP PCA9665D is an excellent choice for designers looking to implement I2C communications in their systems, particularly where distance and noise are concerns. Its ease of integration and support for high-speed operation make it a valuable component in the development of efficient and reliable industrial and consumer electronics.