CH340N USB to Serial Bridge 12MHz Inbuilt Crystal IC - SOP-8 Package

CH340N USB to Serial Bridge 12MHz Inbuilt Clock IC is a compact USB-to-serial bridge IC designed to convert USB communication into a UART serial interface. It supports USB 2.0 full-speed communication, hardware full-duplex UART communication, and data rates up to 2 Mbps. The CH340N features an integrated clock generator, eliminating the need for an external crystal, and its compact SOP-8 package makes it suitable for space-constrained USB-to-UART applications, development boards, microcontroller programming interfaces, and embedded systems.

CH340N-WCH-USB to Serial Bridge 12MHz Inbuilt Crystal IC - Datasheet

Features:

1. USB 2.0 full-speed device interface.
2. Converts USB communication to UART serial communication.
3. Integrated clock generator; no external crystal required.
4. Hardware full-duplex UART communication.
5. Supports serial communication rates from 50 bps to 2 Mbps.
6. Supports 3.3 V and 5 V supply operation.
7. Compact SOP-8 package saves PCB space.
8. Suitable for USB-to-TTL interfaces, development boards, and embedded systems.

Specifications:

Parameter	Value
Product Type	USB to Serial Bridge IC
Model	CH340N
Manufacturer	WCH
Interface	USB to UART
USB Standard	USB 2.0 Full-Speed
UART Data Rate	50 bps to 2 Mbps
Number of UART Channels	1
Supply Voltage	3.3 V / 5 V
Clock	Built-in Clock Generator
External Crystal	Not Required
Package	SOP-8
Mounting Type	Surface Mount
Operating Temperature	-20°C to +70°C

Pin Configuration:

Pin No.	Pin Name	Description
1	UD+	USB D+ Signal
2	UD-	USB D- Signal
3	GND	Ground
4	RTS#	Request to Send Output
5	VCC	Positive Power Supply
6	TXD	UART Transmit Data Output
7	RXD	UART Receive Data Input
8	V3	Internal 3.3 V Supply / Decoupling Pin

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Package Includes:

1 × CH340N-WCH USB to Serial Bridge IC - SOP-8 Package