CP2102-GMR USB-to-UART Bridge Interface IC

Part Overview

The CP2102-GMR is a USB-to-UART bridge interface IC manufactured by Silicon Labs, designed to facilitate communication between USB 2.0 host systems and UART-based devices. This 28-pin QFN package component integrates USB protocol handling with UART interface functionality in a single IC.

The CP2102-GMR carries a "Not For New Designs" product status, indicating that Silicon Labs has discontinued active development and support for this component. This status necessitates identifying equivalent or substitute parts for new applications or when inventory becomes unavailable.

Substiute Parts

CP2102-GMR

Silicon LabsIn Stock: 705381CP2102-GMR Datasheet

Current PartRFQ

CP2103-GMR

Silicon LabsIn Stock: 26504CP2103-GMR Datasheet

Parametric EquivalentRFQ

XR21B1420IL28TR-F

MaxLinear, Inc.In Stock: 3396XR21B1420IL28TR-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CP2102-GMR are identified based on the following critical parameters that determine functional and physical compatibility:

Primary Substitution Criteria:

• Function: Bridge, USB to UART
• Protocol: USB
• Interface: UART
• Standards: USB 2.0
• Package Type: 28-VFQFN Exposed Pad
• Supplier Device Package: 28-QFN (5x5)
• Operating Temperature Range: -40°C to 85°C

Voltage Supply Compatibility:

• Main part operates at 3V to 3.6V
• Substitute parts must support this voltage range or be compatible through design accommodation

Current Supply:

• Main part draws 20mA maximum
• Substitute parts with equal or lower current draw are preferred for power budget considerations

Two substitute parts meet the core functional and physical requirements:

CP2103-GMR (Parametric Equivalent): Silicon Labs component with identical functional specifications, package configuration, and operating parameters. Maintains the same manufacturer ecosystem.

XR21B1420IL28TR-F (Similar Substitute): MaxLinear component offering equivalent USB-to-UART bridge functionality with compatible package and operating temperature range. Represents an alternative manufacturer solution.

Parameter Comparison

Engineering Selection Recommendations

CP2103-GMR Selection: The CP2103-GMR is a direct parametric equivalent to the CP2102-GMR, maintaining identical electrical specifications, package configuration, and operating parameters. Both components share "Not For New Designs" status from Silicon Labs. Selection of CP2103-GMR is appropriate for applications requiring continuity within the Silicon Labs component family or when existing design documentation and driver support are already established for this manufacturer's USB-to-UART bridge products.

XR21B1420IL28TR-F Selection: The XR21B1420IL28TR-F is classified as an active product, indicating ongoing manufacturer support and availability. This component offers equivalent USB-to-UART bridge functionality with compatible package and thermal operating range. The extended voltage supply range (3V to 5.25V) provides additional design flexibility compared to the CP2102-GMR. The lower current draw (15mA versus 20mA) may provide power efficiency benefits. Selection of XR21B1420IL28TR-F is appropriate for new designs requiring long-term component availability and manufacturer support, or when the extended voltage range accommodates system requirements.

Both substitute parts maintain RoHS compliance and are suitable for applications requiring USB 2.0 to UART interface bridging across the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can CP2103-GMR be used as a direct replacement for CP2102-GMR?

A: Yes. The CP2103-GMR matches all critical electrical and physical parameters of the CP2102-GMR, including voltage supply range (3V to 3.6V), current draw (20mA), operating temperature range (-40°C to 85°C), and package configuration (28-VFQFN Exposed Pad, 28-QFN 5x5). Both components perform identical USB-to-UART bridge functions.

Q: What are the key differences between CP2102-GMR and XR21B1420IL28TR-F?

A: The primary differences are manufacturer (Silicon Labs versus MaxLinear), product status (Not For New Designs versus Active), voltage supply range (3V to 3.6V versus 3V to 5.25V), current draw (20mA versus 15mA), and moisture sensitivity level (MSL 1 versus MSL 2). All three components share identical package configuration, operating temperature range, and USB 2.0 to UART bridge functionality.

Q: Is the XR21B1420IL28TR-F suitable for applications currently using CP2102-GMR?

A: Yes, provided the application operates within the compatible voltage range. The XR21B1420IL28TR-F supports the 3V to 3.6V range required by CP2102-GMR designs, with additional capability up to 5.25V. The identical package configuration (28-QFN 5x5) and operating temperature range (-40°C to 85°C) ensure physical and thermal compatibility. The lower current draw (15mA) is advantageous for power-constrained applications.

Q: What does "Not For New Designs" status mean for CP2102-GMR and CP2103-GMR?

A: This status indicates that Silicon Labs has discontinued active development and support for these components. Existing inventory may be available, but long-term availability is not guaranteed. For new product development, XR21B1420IL28TR-F is recommended due to its Active product status and ongoing manufacturer support.

Q: Are all three components RoHS compliant?

A: Yes. CP2102-GMR is ROHS3 Compliant. CP2103-GMR and XR21B1420IL28TR-F are RoHS Compliant. All three components meet RoHS environmental compliance requirements.

Q: What is the significance of Moisture Sensitivity Level (MSL) differences?

A: CP2102-GMR and CP2103-GMR have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. XR21B1420IL28TR-F has MSL 2 (1 Year), requiring controlled moisture exposure conditions with a one-year shelf life limit. This affects component storage, handling procedures, and shelf-life management in manufacturing environments.