Revised Date:

March 20, 2012

ds_pl2303HXD_v1.4.4

PL-2303HX (Rev D) Product Datasheet

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Document Version 1.4.4

1.0 Features

 Single-chip USB to Serial (RS232/RS422/RS485) asynchronous serial data transfer interface

 Fully Compliant with USB Specification v2.0 (Full-Speed)

 USB-IF Logo Compliant with TID 40000100

 UHCI/OHCI (USB1.1), EHCI (USB 2.0), xHCI (USB 3.0) Host Controller Compatible

 Integrated USB 1.1 Transceiver and 5V to 3.3V Regulator

 Integrated 96MHz clock generator (No external crystal required)

 Integrated OTPROM (One-Time Programming ROM)

– no external EEPROM required.

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For writing and storing customer USB VID/PID, Serial Number, Product String, and

other device startup configurations. (uses default settings if OTPROM is empty)

 Supports USB to RS232 Serial UART Interface

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Full-duplex transmitter and receiver (TXD and RXD)

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Six MODEM control pins (RTS, CTS, DTR, DSR, DCD, and RI)

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5, 6, 7 or 8 data bits

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Odd, Even, Mark, Space, or None parity mode

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One, one and a half, or two stop bits

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Parity error, frame error, and serial break detection

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Programmable baud rate from 75 bps to 12M bps

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External RS232 driver power down control

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Independent power source for serial interface

 Supports RS-422/RS-485 like serial interface (TXD, DTR_N, and RTS_N pins should be

externally pulled-up to 5V)

 Extensive Flow Control Mechanism

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Adjustable high/low watermark level

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Automatic hardware flow control with CTS/RTS or DSR/DTR

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Automatic software flow control with XON/XOFF

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Inbound data buffer overflow detection

 Configurable 512-byte bi-directional data buffer

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256-byte outbound buffer and 256-byte inbound buffer; or

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128-byte outbound buffer and 384-byte inbound buffer

 Supports Remote Wake-up from RS232 input pin signals (RI, RXD, DSR, DCD, CTS)

 Four (4) General Purpose I/O (GP0, GP1, GP2, & GP3) pins and Four (4) Auxiliary General

Purpose I/O (RI_N, DSR_N, DCD_N, & CTS_N) pins.

 Supports Windows Selective Suspend by OTPROM configuration (Enable Remote Wakeup)

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Suspends power of chip when idle (COM port is closed)

 Provides royalty-free USB to Virtual COM Port drivers for Windows, Mac, Linux, Android

 -40

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C to 85

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C Operating Temperature

 Small footprint 28-pin SSOP or 32-pin QFN IC packages (RoHS compliant and Pb-free Green

Compound