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CP2108-B03-GMR

SiLCP2108-B03-GMR

Silicon Labs
USB Bridge, USB to UART USB 2.0 UART Interface 64-QFN (9x9)
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Overview

The CP2108-B03-GMR is a highly integrated USB-to-Quad-UART Bridge Controller that eliminates the need for complex firmware development. It expands a single USB 2.0 full-speed connection into four independent UART interfaces with 16 configurable GPIO pins. This device is designed for space-constrained applications, integrating a USB transceiver, a clock, and a 512-byte EEPROM in a 9x9 mm QFN64 package.

Why Choose This Part

It offers a complete plug-and-play solution with royalty-free Virtual COM Port (VCP) drivers, significantly reducing time-to-market. The integration of the clock and USB transceiver minimizes external component count, while the 5.5V tolerant pins and wide operating temperature range of -40degC to 85degC ensure reliability in harsh environments.

Applications

Industrial Multi-Port Controllers
Managing multiple RS-232, RS-422, or RS-485 serial communication lines from a single USB host connection.
Network Switching Equipment
Providing simultaneous console access to multiple independent processor modules within a single rack-mount chassis.
Instrumentation and Data Logging
Interfacing with multiple sensors or legacy serial devices while utilizing the 16 GPIOs for status indicators and control signals.

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

Developers can use the Silicon Labs Xpress Configurator tool to customize USB descriptors and GPIO configurations without writing code. The CP2108-EK evaluation kit is available to verify the four-port UART functionality and test the VCP drivers on Windows, macOS, and Linux.

Part of Silicon Labs CP2102 / CP2104 family » CP2108

CP2108 Family

Also available as: CP2108-B03-GM

Also Consider

FT4232HL FTDI - A widely used alternative for USB to quad-channel UART/MPSSE that supports higher data rates and multi-protocol synchronous serial engines.
XR21V1414 MaxLinear - Offers a 128-byte FIFO and integrated clock, providing another robust option for multi-port USB-to-UART bridging.
CP2105-F01-GMR SiLSilicon Labs - A dual-channel version of the same family for applications that only require two UART ports in a smaller 24-QFN footprint.