PL2303TA Windows 11 Driver & USB to Serial

Explore comprehensive information about the PL2303TA chip, its compatibility, and driver support. Note that the PL2303TA does not support Windows 11 or later versions. Find details on the PL2303TA driver for Windows 10, pinout, and USB to serial functionality in the Reference Manual.

Marques : Technologie prolifique

Télécharger: -

Prix: enquête

En stock: 19444

Tension - Alimentation : -

Applications Fonction: USB to RS232

Protocole: -

Emballer: SSOP-28-208mil

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PL2303TA

The PL2303TA is a popular USB-to-serial converter chip commonly used to connect computers to serial devices like microcontrollers, GPS modules, or debugging boards. One of its greatest advantages is its ease of use—just plug it in, and you’re usually good to go without needing extra drivers. It offers stable and reliable data transmission, supporting all major operating systems such as Windows, Linux, and Mac. Additionally, it’s compact, energy-efficient, and affordable, making it perfect for electronics hobbyists or engineers working on DIY projects and industrial serial communication applications.

PL2303TA pinout and usb wiring

PL2303TA pinout

Pin #	Nom	Taper	Description
1	TXD	O	Serial port (Transmitted Data)
2	DTR_N	O	Serial port (Data Terminal Ready)
3	RTS_N	O	Serial port (Request To Send)
4	VDD_325	P	RS232 VDD. The power pins for the serial port signals. When the serial port is 3.3V, this should be 3.3V. When the serial port is 2.5V, this should be 2.5V.
5	RXD	je	Serial port (Received Data)
6	RI_N	E/S	Serial port (Ring Indicator)
7	GND	P	Sol
8	NC		No Connection
9	DSR_N	E/S	Serial port (Data Set Ready)
10	DCD_N	E/S	Serial port (Data Carrier Detect)
11	CTS_N	E/S	Serial port (Clear To Send)
12	SHTD_N	O	RS232 Transceiver Shut Down Control
13	EE_CLK	E/S	2-Wire Serial EEPROM Clock
14	EE_DATA	E/S	2-Wire Serial EEPROM Data
15	DP	E/S	USB port D+ signal
16	DM	E/S	USB port D- signal
17	VO_33	P	Regulator Power Output, 3.3V
18	GND	P	Sol
19	RÉINITIALISER_N	je	External System Reset (Active Low)
20	VDD_5	P	USB port V_BUS, 5V Power
21	GND	P	Sol
22	GP0	E/S	General Purpose I/O Pin 0
23	GP1	E/S	General Purpose I/O Pin 1
24	NC		No Connection
25	GND_A	P	Analog Ground for PLL
26	PLL_TEST	je	PLL test mode control
27	OSC1	je	Crystal oscillator input
28	OSC2	O	Crystal oscillator output

PL2303TA USB-to-TTL Cable Pinout

Wire Color	Fonction	Description
Red	VCC (5V)	Provides 5V power from USB port
Black	GND	Sol
Blanc	RXD	Receive Data (from device to USB)
Vert	TXD	Transmit Data (from USB to device)

PL2303TA equivalent usb to uart chip

PL2303TA equivalent

Modèle	Emballer	Tension	Driver Support	Compatibility Notes	Officially Recommended	Remarques
PL2303TA	SSOP-28	1.8–3.3V	Windows XP–Windows 10 (not supported on Windows 11)	Discontinued; known driver compatibility issues.	Non	Known driver issues, especially problematic on Windows 11.
PL2303GC	SSOP-28	1.8–3.3V	Windows, Linux, macOS (including Windows 11)	Official replacement for PL2303TA	Oui	Pin-compatible, officially recommended replacement.
PL2303GT	SSOP-28	1.8–3.3V	Windows, Linux, macOS (including Windows 11)	Official replacement for PL2303RA	Oui	Pin-compatible, suitable for PL2303RA replacement.
PL2303GE	SSOP-28	1.8–3.3V	Windows, Linux, macOS (including Windows 11)	Official replacement for PL2303EA	Oui	Pin-compatible, recommended for PL2303EA replacement.
PL2303GL	SOP-8	3.3–5V	Windows, Linux, macOS (including Windows 11)	Official replacement for PL2303SA	Oui	Different package; PCB redesign required.
CH340G	SOP-16	3.3–5V	Windows, Linux, macOS (including Windows 11)	PCB redesign required	Non	Low cost, popular choice but not pin-compatible.
CP2102	QFN-28	3.0–3.6V	Windows, Linux, macOS (including Windows 11)	PCB redesign required	Non	Stable with broad driver support; different package.
FT232RL	SSOP-28	3.3–5V	Windows, Linux, macOS (including Windows 11)	Pin-compatible with PL2303TA	Non	Excellent stability and driver support; relatively expensive.

Official Recommendations:
Prolific officially recommends PL2303GC as a direct replacement for PL2303TA due to full compatibility in functionality and pin layout. Ideal when avoiding PCB redesign.
Driver Compatibility:
PL2303TA has known driver compatibility issues on Windows 11. When replacing, select chips with confirmed Windows 11 support, such as PL2303GC, CH340G, CP2102, or FT232RL.
Package and Pin Compatibility:
To avoid PCB redesign, choose pin-compatible models such as PL2303GC ou FT232RL. Chips like CH340G et CP2102 have different packages, requiring PCB redesign.

PL2303TA serial converter circuit

PL2303TA serial converter circuit 1

The central component, marked as a yellow rectangle, is the PL2303TA USB-to-serial converter chip. Its primary function is to convert USB signals to TTL-level serial signals, enabling communication between USB hosts (like a computer) and serial devices (microcontrollers or peripherals).A crystal oscillator (typically 12 MHz) is connected to the PL2303TA, providing a stable clock signal necessary for accurate USB communication.The crystal is typically paired with load capacitors (e.g., 22 pF) to ensure oscillator stability.USB data lines (D+ and D-) connect to the PL2303TA chip through small resistors (typically around 27Ω). These resistors perform impedance matching to improve signal quality and minimize signal reflection.The chip provides standard TTL-level serial signals, typically identified as TXD (Transmit Data) and RXD (Receive Data).These signals usually directly interface with a microcontroller’s UART or other serial devices.

PL2303TA application

Le PL2303TA is a widely used USB-to-serial (TTL) bridge IC, frequently utilized to provide convenient communication between USB host devices (such as PCs) and serial-based peripherals. Typical applications include:

Microcontroller Programming:
- Enables easy programming and debugging of Arduino, ESP8266, STM32, and similar microcontroller boards via USB.
Serial Data Communication:
- Facilitates reliable data transfer between computers and devices such as GPS modules, GSM modules, RFID readers, and barcode scanners.
Networking and Telecommunications:
- Used in network routers, modems, and other telecommunications equipment requiring serial communication with a computer.
Embedded Systems Debugging:
- Provides convenient serial debugging interfaces for embedded systems development.
Legacy Device Connectivity:
- Allows modern computers (which typically lack native serial ports) to communicate with legacy serial equipment.