PL2523 USB 2.0 to 2-port Full UART Controller

Single-chip upgrade solution for Legacy RS232 devices to USB interface

USB to RS232/RS422/RS485 interface converters/cables/dongles/adapters

MCU-based devices to USB host interface

Point-of-Sale (POS) Terminals/Printers/Pole Displays

USB Barcode/Smart Card Readers

PC I/O Docking Station/Port Replicators

Healthcare/Medical USB Interface Data Transfer Cable

Serial-over-IP Wireless Solution  Cellular/PDA USB Interface Data Transfer Cable

GPS/Navigation USB Interface  Industrial / Instrumentation / Automation Control USB Interface

USB Modem / Wireless / Zigbee USB Interface

Set-Top Box (STB) / Home Gateway USB Interface

Battery Charger Detection for high-current and quick charging of batterie


UART Interface

Support 2-port full UART interface

Individual 2-port full UART interface

RS232, RS422, RS485

Up to 24Mbps flexible baud rate

5, 6, 7, or 8 data bits

Odd, Even, Mark, Space, None parity mode

One, one and half, or two stop bits

Hardware flow control (CTS/RTS and/or DSR/DTR)

Software flow control (XON/XOFF)

Configurable remote wakeup pin

PL2523 Data Sheet


PL2523 Data Sheet

Driver for Windows

Download Download 2023/05/15 v3.1.0.0 11326.73KB
Windows Driver Installer Setup Program ( Win7 / Win8.1 / Win10 / Win11)
Installer version & Build date: v3.1.0.0 (2023-05--05)
Windows 11 ( 64-bit ) WDF WHQL Driver: v7.1.3.0 (12/22/2022) / v4.1.4.0 (03/23/2023)
(For PL2543 / PL2523 / PL2565 / PL2502 / PL2503 versions)
- Windows 11 Certified WHQL Driver ( 22H2 versions)
- Auto-download driver via Windows Update (Windows 11)
Windows 7/8.1/10 (32 & 64-bit) WDF WHQL Driver: v7.0.2.0 (12/15/2022) / v4.0.4.0 (03/15/2023)
(For PL2543 / PL2523 / PL2565 / PL2502 / PL2503 versions)
- Windows 10 Certified WHQL Driver (TH1 1507, TH2 1511, RS1 1607, RS2 1703, RS3 1709, RS4 1803,RS5 1809,19H1 1903, 19H2 1909, 20H1 VB, 21H1,versions)
- Windows 7, 8.1 Certified WHQL Driver
- Compatible with Windows Server 2008, 2008R2, 2012, 2012R2, 2016, 2019 , 2022
- Auto-download driver via Windows Update (Windows 7, 8.1, 10)
- Installer Language Support: English (default),
- For Prolific USB VID_067B&PID_2343, PID_2565,PID_2502,PID_2503
- Includes Certification Report, Driver Release Notes
- Installer supports silent install (add "/s" parameter when running program)

Driver for Linux

Download 2023/05/12 v1.0.0 366.98KB
You can update CDC-ACM patch file to support hardware flow

Driver for MAC

Download Download

PL25x3_Mac 2024/01/11 v1.2.1 534.73KB
Mac OS X Universal Binary Driver v1.2.1 (PKG file format)
For Mac OS Ventura (version 13)
For Mac OS Monterey (version 12.4)
For Mac OS Big Sur (version 11) -
For Mac OS Catalina (version 10.15) .
For Mac OS Mojave (version 10.14)
For Mac OS High Sierra (version 10.13)
For Mac OS X Sierra (version 10.12)
For Mac OS X El Capitan (version 10.11)
For Mac OS X Yosemite (version 10.10)
For Mac OS X Mavericks (version 10.9)

SDK for 7GPIO Windows

Download Download Download

PL2523_7GPIO_Win 2023/01/04 v1.0.0.1 2035.01KB
PL2523 7-GPIO LED Indicator Application Note Includes GPIO Test Sample Program and Source Code

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