FT2232H and FT4232H USB interfaces

How it works

The FT2232H provides two configurable interfaces; the FT4232H provides four. Such devices can connect a USB host to serial interfaces and, on supported channels, to synchronous protocols through an MPSSE engine.

For the FT4232H, two channels support MPSSE and the other two provide UART or bit-bang operation. The presence of four interfaces does not mean that all four offer identical protocol capabilities.

The original page linked to externally hosted illustrations. Those files are absent from the backup; the text has been restored without substitute images.

On the bench

USB bus speed is not the application’s guaranteed throughput. Check the current manufacturer datasheet for channel modes, electrical levels, driver support, and timing before designing a board.

Resources & provenance

Rewritten from the original articles/new/d3mn6sf_new003.php page. Component values and historical performance claims have not been independently bench-tested.