USB (Universal Serial Bus), Cypress Semiconductor

USB is a cable bus supporting data exchange between a host computer and a wide range of simultaneously accessible peripherals. There is a differential signal data interface for transmit and receive communication path. The bus includes power at 5 Volts.

USB Controllers, Hi-Speed USB Peripherals, EZ-USB, Cypress Semiconductor

EZ-USB AT2LP implements a bridge function between a USB port and one or two ATA- or ATAPI-based mass storage device ports.
EZ-USB FX2LP is low-power, highly integrated USB 2.0 microcontroller.
EZ-USB NX2LP-Flex is a fixed-function, low-power programmable USB to NAND controller.

FT245B, FT245R, USB to FIFO Converters, FTDI Chip

The FT245B and FT245R are USB to parallel FIFO converter interfaces.

Single chip USB to parallel FIFO bidirectional data transfer interface
Entire USB protocol handled on the chip – No USB-specific firmware programming required
FT245B USB compatible
FT245R USB 2.0 Full Speed compatible
FT245R with the FTDIChip-ID security dongle feature

I/O Peripherals – Microchip

Serial I/O Peripherals, Microchip

Serial I/O Peripherals, FTDI Chip