PCA9665BS,118

Controllers Overview

The PCA9665BS,118 is an Fm+ parallel bus to I2C-bus controller manufactured by NXP Semiconductors. It serves as an interface between standard parallel-bus microcontrollers and the serial I2C-bus, supporting both master and slave functions. The device operates within a supply voltage range of 2.3 V to 3.6 V and features a 68-byte data buffer. It supports transmission speeds up to 1 Mbit/s with up to 25 mA drive capability on SCL/SDA lines. The component is housed in an HVQFN20 package (SOT662-1) and is rated for an operating temperature range from -40 °C to +85 °C.

Controllers Feature Summary

• Parallel-bus to I2C-bus protocol converter and interface
• Internal oscillator trimmed to 15% accuracy reduces external components
• Multi-master capability with software reset on parallel bus
• ESD protection exceeds 2000 V HBM per JESD22-A114

Controllers Applications

• Add I2C-bus port to controllers or processors that do not have one
• Add additional I2C-bus ports to controllers or processors requiring multiple I2C-bus ports
• Converts 8 bits of parallel data to serial data stream to prevent having to run a large number of traces across the entire printed-circuit board

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Ensure the procurement source provides valid RoHS compliance certificates and original manufacturer traceability. Cross-reference the part number with the latest datasheet revision to confirm pinout compatibility and electrical characteristics before finalizing orders.

Controllers Selection Notes

Select this component when interfacing standard parallel buses with I2C devices requiring high-speed communication up to 1 Mbit/s. The internal oscillator simplifies design by reducing external timing components. Consider the 25 mA drive capability for robust signal integrity on longer traces. Verify that the system voltage aligns with the 2.3 V to 3.6 V operating range and that the HVQFN20 package fits the PCB layout constraints.

Controllers Part Context

The PCA9665BS,118 belongs to the PCA9665 family of Fm+ parallel bus to I2C-bus controllers. It shares the same footprint as the PCA9564 but includes enhanced features such as higher transmission speeds and increased drive capability. This family is designed to bridge the gap between legacy parallel interfaces and modern serial I2C protocols, offering flexibility in system architecture.

Controllers Replacement Considerations

The PCA9665A series offers similar functionality with 'glitch-free' restart capabilities suitable for use with buffer drivers. Check if the PCA9564 is a viable alternative if the additional features of the PCA9665 are not required. Verify pin-to-pin compatibility and register mapping differences before substituting.