FT232R version recommended for new designs
The FT232B is the 2nd generation of FTDI's popular USB UART device and the FT232BL is a lead free version of the FT232BM. The FT232BQ provides the same functionality as the FT232BL in a QFN-32 lead free package.
This device not only adds extra functionality to its predecessor (FT8U232AM) and reduces external component count, but also maintains a high degree of pin compatibility with the original making it easy to upgrade or cost reduce existing designs as well as increasing the potential for using this device in new application areas.
Single chip USB <=> asynchronous serial data transfer
Full handshaking & modem interface signals
UART interface supports 7/8 data bits, 1/2 stop bits and Odd/Even/Mark/Space/No Parity
Data transfer rate of 300 Baud => 3M Baud (TTL)
Data transfer rate of 300 Baud => 1M Baud (RS232)
Data transfer rate of 300 Baud => 3M Baud (RS422/RS485)
384 Byte Rx buffer/128 Byte Tx buffer for high data throughput
Adjustable Rx buffer timeout
Fully assisted hardware or X-On/X-Off handshaking
Available in standard 32 pin LQFP (FT232BM) and lead(Pb)-free LQFP package (FT232BL).
FT232BL ( Lead free )