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CP2108-B03-GM

SiLCP2108-B03-GM

Silicon Labs
USB Bridge, USB to UART USB 2.0 UART Interface 64-QFN (9x9)
Active2,559 in stock

Overview

The CP2108-B03-GM is a highly integrated USB-to-Quad-UART bridge controller that provides a simple solution for updating RS-232 or RS-485 designs to USB. It features four independent UART interfaces and 16 GPIOs in a single 9x9 mm QFN64 package, operating from a 3V to 3.6V supply. The device eliminates the need for external crystals or resistors, significantly reducing BOM count and PCB footprint.

Why Choose This Part

The primary advantage is the integration of four UARTs into one chip without requiring firmware development or external timing components. It includes 512 bytes of programmable EEPROM for custom VID/PID and serial numbers, and its 16 configurable GPIOs allow for hardware handshaking or custom status indicators. Silicon Labs provides royalty-free VCP drivers, ensuring broad compatibility across Windows, macOS, and Linux.

Applications

Multi-Port Serial Servers
Ideal for industrial gateways requiring multiple RS-232 or RS-485 ports managed via a single USB uplink.
Instrumentation and Control
Provides dedicated communication channels for different subsystems within a laboratory or factory automation tool.
Point-of-Sale (POS) Terminals
Consolidates connections for receipt printers, barcode scanners, and customer displays through a single controller.

Key Specifications

Function Bridge, USB to UART
Protocol USB
Interface UART
Standards USB 2.0
Package / Case 64-VFQFN Exposed Pad
Current - Supply 56mA
Voltage - Supply 3V ~ 3.6V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 64-QFN (9x9)

Getting Started

Start by downloading the CP210x USB to UART Bridge VCP Drivers and the Xpress Configurator tool within Simplicity Studio. The CP2108-EK evaluation kit is available for rapid prototyping and hardware validation. No external firmware is required, as all UART parameters and GPIO configurations are handled through the GUI-based utility.

Also Consider

FT4232HL FTDI - A widely used alternative that also supports four independent channels but uses a different driver ecosystem and supports High-Speed USB 2.0.
CP2105-F01-GM SiLSilicon Labs - A more compact dual-channel (Dual UART) alternative if four independent ports are not required for the application.
CY7C65215 Infineon - Features dual-channel USB-to-Serial conversion with integrated CapSense for touch-sensitive controls.