FT232HL 参数 Datasheet PDF下载

Document No.: FT_000288

FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 1.3

Clearance No.: FTDI #199

4.3.2 RS422 Configuration

Figure 4.2 Dual RS422 Configuration

In this case the FT232H is configured as UART operating at TTL levels and a level converter device (full

duplex RS485 transceiver) is used to convert the TTL level signals from the FT232H to RS422 levels. The

PWREN# signal is used to power down the level shifters such that they operate in a low quiescent current

when the USB interface is in suspend mode.

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