FT240XQ-R

Controllers Overview

The FT240XQ-R is a USB to parallel FIFO interface chip manufactured by Future Technology Devices International Ltd. It integrates the complete USB protocol and provides a high-speed, easy-to-use parallel interface for data transfer between a host computer and external devices. The device features a 128-byte receive buffer and a 128-byte transmit buffer, supporting data rates up to 3 Mbaud equivalent throughput depending on system configuration. It operates with a single 3.3V power supply and includes fully integrated clock generation without requiring an external crystal. The chip supports configurable C-BUS I/O pins for control signals and LED driving, eliminating the need for external glue logic in most applications.

Controllers Feature Summary

• Glue-less parallel FIFO interface simplifies design integration
• Integrated USB protocol handling removes firmware programming requirements
• Configurable C-BUS I/O pins allow flexible control signal management
• Internal clock generation eliminates need for external crystals

Controllers Applications

• High-speed data acquisition systems
• Industrial automation control interfaces
• Embedded system debugging and programming ports
• Test and measurement equipment communication links

Controllers Procurement Notes

Verify the exact suffix 'Q-R' against official FTDI documentation to confirm package type and tape/reel specifications. Ensure compatibility with required voltage levels and interface standards before procurement. Check for recent revisions in the datasheet that may affect pinout or electrical characteristics.

Controllers Selection Notes

Select this component when a simple parallel FIFO interface is needed instead of UART or RS232. Consider the FT245X variant if higher buffer depths are required. Verify that the target application can accommodate the specific package options available for the Q-R suffix.

Controllers Part Context

The FT240X series belongs to FTDI's family of USB to parallel FIFO chips. It serves as a bridge between USB hosts and parallel peripheral devices, offering a drop-in replacement for legacy parallel port solutions with enhanced speed and ease of implementation.

Controllers Replacement Considerations

FT245R and FT245X are functionally similar parallel FIFO controllers. Verify buffer sizes and package compatibility when substituting. The FT240XQ-R specifically denotes a particular package and reel configuration.