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WCH CH348L product image
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WCH CH348LRoHS

Manufacturer
WCHAsian Brands
MPN
CH348L
LCSC Part #
C2979160
Packaging
LQFP-100(14x14)
Customer #
Key Attributes
USB to 8 UART chip CH348
Datasheetpdf iconWCH CH348L
In-Stock: 309
309 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 7.1052$ 7.11
10+$ 6.2388$ 62.39
30+$ 5.7237$ 171.71
90+$ 5.2022$ 468.20
540+$ 4.9609$ 2678.89
900+$ 4.854$ 4368.60
Standard Packaging90/Full Tray
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Interface/Interface Controllers
ManufacturerWCH
PackagingLQFP-100(14x14)
FeaturesProgrammable baud rate;FIFO buffer;Hardware flow control support;Power-on reset;Built-in clock generator
Operating Temperature-40℃~+85℃
Voltage - Supply3.3V
Applications FunctionUSB to UART
Data Rate6Mbps
USB ProtocolUSB 2.0
Supply Current40mA
Number of Channels8
Quiescent Supply Current260uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging90
Sales UnitPiece

Introduction

AI Translation

CH348 is a high-speed USB bus converter chip that implements USB to eight asynchronous serial ports UART0/1/2/3/4/5/6/7, used to expand asynchronous serial ports for computers, or to directly upgrade ordinary serial port devices or MCUs to USB bus.

Features

AI Translation
  • 480Mbps high-speed USB device interface; only crystal and capacitors required as external components.
  • Built-in firmware emulating standard serial ports, enabling upgrade of existing serial peripherals or addition of extra serial ports via USB.
  • Fully compatible with serial port applications under Windows OS on the host side; no modifications required.
  • Hardware full-duplex serial port with independent built-in TX/RX buffers; communication baud rate supports 1200bps ~ 6Mbps.
  • Serial port supports 8 data bits, odd/even/no parity, and 1 or 2 stop bits.
  • Each serial port features a built-in 2048-byte RX FIFO and 1024-byte TX FIFO.
  • Supports common MODEM control signals: RTS, DTR, DCD, RI, DSR, CTS.
  • Supports CTS and RTS hardware automatic flow control.
  • Half-duplex support with TNOW signal indicating serial transmission status, usable for RS485 TX/RX switching control.
  • Supports up to 48 GPIO input/output lines.
  • Supports RS232, RS485, RS422, and other interfaces via external level-shifting devices.
  • CH348L serial port I/O independently powered; supports 3.3V, 2.5V, and 1.8V supply voltages.
  • Built-in EEPROM for configuring VID, PID, maximum current, manufacturer and product information strings, and other parameters.
  • Single 3.3V power supply.
  • Available in LQFP48 and LQFP100 lead-free packages, RoHS compliant.

Applications

AI Translation
  • USB to 8-Channel TTL Serial