USB TO 8CH TTL

USB TO 8CH TTL UART, TTL

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Onboard Interfaces

Related Products

Overview

Introduction

USB TO 8CH TTL, an industrial UART TO 8CH TTL converter with an aluminum alloy case, features the original CH348L chip and built-in protection circuits such as the self-recovery fuse and TVS. This converter is easier to operate due to its fully automatic transceiver circuit with no delay. Boasting characteristics of fast communication, stability, reliability, and safety, it is an ideal choice for various industrial control devices and applications with high communication requirements.

Features

• Extending USB to 8CH TTL (UART) with hardware flow control, allows concurrent and independent communication for each channel.
• Onboard resettable fuse and protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage proof, improving shockproof performance.
• Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic.
• Onboard voltage translator circuit, with anti-surge and ESD protection, safe and stable communication.
• Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via the switch.
• Aluminium alloy enclosure with oxidation dull-polish surface, CNC process opening, solid and durable, well-crafted.
• 4x external LEDs for indicating the power and transceiver status.

Parameters

Product	Industrial USB to TTL converter
Host Interface	USB
Device Interface	TTL (UART)
USB Connector	Operating Level	5V
	Connector	USB-B
	Protection	200mA self-recovery fuse, ESD protection
Power Port	Connector	5V DC Power Port
	Protection	Over-voltage protection and anti-reverse protection
TTL (UART)	Connector	50PIN Anti-reverse Port
	Protection	TVS diode, surge protection & ESD protection
	UART TTL Level	3.3V / 5V (Adjustable)
Indicator	PWR	Power indicator, connects to USB, lights up red when voltage is detected
	ACT	Status indicator, lights up green when the driver is detected
	TXD	TX indicator, lights up when the USB port sends data
	RXD	RX indicator, lights up when the device ports send data back
Operating System	Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7

Onboard Interface

Indicator
PWR	Power indicator, connect to USB, red light is on when the voltage is detected
ACT	Status indicator, green light is on when the driver is detected
TXD	Transmitting indicator, turn on when data is sent from the USB port
RXD	Receiving indicator, turn on when receiving data from the corresponding port

Dimensions

Driver Installation

• First, download the driver file USBMESR.
  
• Double-click USBMESR.exe and install it by steps.
  
• Select USB to serial ports (USB 1.1/2.0) as card type.
  

• Click on Install Driver.
  

• When the progress bar is loaded, a pop-up window will appear to indicate that the driver has been installed successfully.

• After connecting to the computer, you can find the available ports and their corresponding COM port. (Also, you can assign the COM port number through the serial port manager tool).
  

Communication Operation

• Open SSCOM software.
  
• In general, the identification of 8 COM port numbers usually proceeds sequentially from Port A to Port H, starting from the smallest.
  

TTL Communication

The following displays how to perform the communication between the UART 0 and UART 1 of the product.

Hardware Connection

USB TO 8CH TTL - UART 0	USB TO 8CH TTL - UART 1
UART 0 - TXD	UART 1 - RXD
UART 0 - RXD	UART 1 - TXD
UART 0 - GND	UART 1 - GND

Software Operation

• Open two SSCOM interfaces.
  
• Select the corresponding COM port of the UART0 and UART 1, respectively.
  

• Select the baud rate as 115200, input the characters you want to send, check Show time and packet, and click on Open COM.
  

• Select 100ms intervals in two SSCOM interfaces, and you can see they transmit and receive data normally, the effects as shown below:
  

Resource

Datasheet

• CH348L Manual

Software and Drivers

• SSCOM Assistant
• Windows USBMESR driver (or download from WCH website)
• ComPortManager

FAQ

Question:The interface terminal of the product is 50PIN, how to distinguish the interface?

 Answer:

The interface of this product takes 2*3PIN as a group of serial ports, and circulates to the right in order. There are 8 groups of serial ports in total. The color corresponding to each interface is the color corresponding to the 50PIN wire after it is connected to the wire. The specific distinction is shown in the figure:

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Support

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