Silicon Labs

CP2108-B01-GM USB 2.0 Quad-UART 64-QFN Bridge

Teilenummer: CP2108-B01-GM ✗ Abgekündigt
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64-pin QFN, 9 mm x 9 mm Package USB VID, PID, product description, power descriptor, release number, and interface strings Memory
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CP2108-B01-GM Übersicht

The Silicon Labs CP2108-B01-GM is a single-chip USB 2.0 full-speed to quad-UART bridge with an integrated transceiver, oscillator, EEPROM, 16 digital I/O pins, and four asynchronous serial data buses in a compact 9 mm x 9 mm 64-pin QFN package. Its USB interface provides a simple path for bringing legacy RS-232 and RS-485 designs onto USB, while the four UART channels support simultaneous serial connections.

A USB-to-UART bridge is an interface IC that translates a USB host transaction into one or more UART signals for serial peripherals. This device belongs to the USB interface-controller and UART-interface hierarchy, with USB 2.0 full-speed connectivity, four serial channels, modem-control signals, and on-chip customization storage. The B01-GM ordering code identifies the manufacturer's device and package configuration; the manufacturer datasheet also identifies B01-GM as a revision marking.

The CP2108 includes four asynchronous UART data buses with full modem-control signals. Its on-chip EEPROM can customize the USB Vendor ID, Product ID, product description string, power descriptor, device release number, and interface strings. The USB product page identifies 16 digital I/O pins and a 9 x 9 mm QFN64 package. The manufacturer documentation describes the CP2108 as a USB 2.0-compliant device suitable for multiport serial-interface designs.

Because the device combines USB control, four UART channels, EEPROM customization, and digital I/O in one package, it can reduce the component count and PCB area of a four-port serial bridge. The integrated USB transceiver and oscillator simplify the host-side connection compared with a discrete USB implementation. Four UART ports allow equipment such as test systems, instrumentation, industrial controllers, and service equipment to expose multiple serial devices through one USB connection.

Typical system implementation places the CP2108 between a USB connector and four external serial ports. Board design must preserve the datasheet pin assignments, provide the required decoupling and power routing, and account for the exposed-pad thermal and electrical requirements of the QFN package. Host software must use a compatible CP210x USB-to-UART driver, while USB VID, PID, and product strings can be managed through the supported customization process described by the manufacturer.

The CP2108-B01-GM is useful when a product needs four UART channels, modem-control signals, digital I/O, and a compact USB interface. It is also suitable for legacy serial designs that need to migrate to USB without retaining a large collection of external interface components. Its key design tradeoff is integration versus firmware support: the device simplifies hardware, but the host must have compatible drivers and the firmware must handle four independent UART channels and any required custom USB identity.

This page summarizes the verified manufacturer and distributor references, the CP2108 family architecture, package information, and practical replacement considerations. Because the provided data does not expose every electrical limit, pin-level function, lifecycle statement, or current distributor price for the exact CP2108-B01-GM, those fields are marked as needed rather than estimated.

Drop-in-Alternativen für CP2108-B01-GM – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.

Varianten dieser Serie

Modelle derselben Serie, die drop-in-kompatibel sind mit CP2108-B01-GM (gleiche Bauform und Footprint) – abweichend in Package, RoHS Status, Integrated Functions, Driver Support, EEPROM Customization.

Silicon Labs
Package: 64-pin QFN EP, 9 mm x 9 mm
RoHS Status: Compliant
Vergleichen mit CP2108-B01-GM →
Silicon Labs
Integrated Functions: USB controller, USB transceiver, oscillator, EEPROM, and 4 UARTs
Driver Support: Royalty-free drivers
EEPROM Customization: USB VID, PID, product strings, power descriptor, release number, and interface strings
Vergleichen mit CP2108-B01-GM →
Silicon Labs
Package: 64-QFN, 9 mm x 9 mm
Integrated Functions: USB function controller, USB transceiver, oscillator, EEPROM, and four UARTs
Vergleichen mit CP2108-B01-GM →
Silicon Labs
RoHS Status: Compliant (per manufacturer page)
Vergleichen mit CP2108-B01-GM →

Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:

CP2108-B01-GMR

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB to Quad UART Bridge Controller · USB 2.0 Full-Speed (12 Mbps) · 4 · 300 baud to 2 Mbaud · 3.0 V to 5.25 V · 3.3 V (on-chip regulator) · 1.8 V to 3.3 V (level shifters) · 16 (GPIO.0 to GPIO.15)

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$4.35 / Stück

Datenblatt ansehen →

CP2108-B02-GM

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB-to-Quad-UART bridge controller · USB 2.0 full-speed · 4 · 16 · Full modem-control signals · USB controller, USB transceiver, oscillator, EEPROM, and 4 UARTs · On-chip custom EEPROM · USB VID, PID, product strings, power descriptor, release number, and interface strings

✓ Auf Lager

Preis auf Anfrage

Datenblatt ansehen →

CP2108-B03-GMR

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB to Quad UART Bridge Controller · USB 2.0 Full-Speed · 4 · 3.0 V to 3.6 V · 300 bps to 921.6 kbps (per UART) · 5, 6, 7, 8 bits · None, Even, Odd, Mark, Space

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$4.61 / Stück

Datenblatt ansehen →

CP2108-B03-GM

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB 2.0 full-speed to quad-UART bridge controller · 3 V to 3.6 V · USB 2.0 full-speed · 4 asynchronous serial data buses · 16 pins · USB function controller, USB transceiver, oscillator, EEPROM, and four UARTs · Full modem-control signals · Included

✓ Auf Lager

$3.7973 / Stück

Datenblatt ansehen →

CP2108-B02-GM

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB-to-Quad-UART bridge controller · USB 2.0 full-speed · 4 · 16 · Full modem-control signals · USB controller, USB transceiver, oscillator, EEPROM, and 4 UARTs · On-chip custom EEPROM · USB VID, PID, product strings, power descriptor, release number, and interface strings

✓ Auf Lager

Preis auf Anfrage

Datenblatt ansehen →

CP2108-B03-GMR

✅ Drop-In
Silicon Labs
📦 64-pin QFN, 9 mm x 9 mm
USB to Quad UART Bridge Controller · USB 2.0 Full-Speed · 4 · 3.0 V to 3.6 V · 300 bps to 921.6 kbps (per UART) · 5, 6, 7, 8 bits · None, Even, Odd, Mark, Space

✓ Auf Lager

$4.61 / Stück

Datenblatt ansehen →

CP2108-B01-GM Technische Daten

Device Type USB 2.0 full-speed to quad-UART bridge
USB Interface USB 2.0 full-speed
UART Channels 4 asynchronous serial data buses
Digital I/O 16 digital I/O pins
Integrated Functions USB function controller, USB transceiver, oscillator, and EEPROM
UART Modem Control Full modem-control signals
EEPROM Customization USB VID, PID, product description, power descriptor, release number, and interface strings
Gehäuse 64-pin QFN, 9 mm x 9 mm
Montageart Surface mount
Manufacturer Silicon Labs
Revision Marking B01-GM or B02-GM appears on the second row of the package marking, per manufacturer documentation
Legacy Interface Use RS-232 and RS-485 design migration to USB
Driver Support Royalty-free drivers, according to the manufacturer product-page result
RoHS-Status unknown
REACH Status unknown
AEC-Q100 Status not_applicable
Lead-Free Status unknown

CP2108-B01-GM 64-pin qfn, 9 mm x 9 mm Pinbelegungsleitfaden

Pinbelegung für CP2108-B01-GM (64-pin qfn, 9 mm x 9 mm-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.

Pinbelegungsdiagramm für CP2108-B01-GM im 64-pin qfn, 9 mm x 9 mm-Gehäuse

Keine detaillierten Pinbelegungsdaten verfügbar für CP2108-B01-GM.

Siehe die Datenblatt für die vollständige Pin-Konfiguration.

Typische Anwendungen

CP2108-B01-GM ist geeignet für 6 Anwendungs: Industrial Serial Test Equipment, RS-232 to USB Migration, Multiport Instrumentation, Industrial Controller Gateway, USB-to-Serial Service Console, Legacy Peripheral Consolidation.

🏭

Industrial Serial Test Equipment

The CP2108-B01-GM is suited to industrial test equipment that must expose several serial-controlled instruments through one USB connection. Its four asynchronous UART data buses and full modem-control signals let a host manage four independent serial channels without four separate USB interface ICs. The 16 digital I/O pins can support peripheral status, fixture control, or trigger signaling when the system architecture requires them. A host driver must enumerate all four ports, and external RS-232 or RS-485 electrical transceivers remain necessary when the connected equipment uses those physical standards. The 9 mm x 9 mm QFN64 footprint helps reduce board area, but exposed-pad routing and four-channel signal integrity require careful layout.

🔧

RS-232 to USB Migration

The CP2108-B01-GM provides a practical bridge for legacy RS-232 equipment that needs a USB host connection. Its USB 2.0 full-speed function controller and integrated transceiver reduce the host-side interface complexity, while four UART buses allow one board to consolidate multiple serial links. Each legacy port still needs the correct RS-232 voltage-level transceiver, wiring protection, and connector implementation. Firmware can present the four UARTs as separate COM ports or combine them into a proprietary transport, provided the host software and drivers are configured accordingly. The integrated EEPROM can also preserve product-specific USB identity during the migration.

🔬

Multiport Instrumentation

Instrumentation systems often need several low-speed control and measurement links close to the host computer. The CP2108-B01-GM can provide four UART channels in one compact interface IC, reducing USB bridge count and simplifying host-side enumeration. Full modem-control signals are useful when a connected instrument uses request-to-send, clear-to-send, or other handshake lines. The 16 digital I/O pins can provide additional discrete control where the instrument needs trigger or status signals. Because the CP2108 handles USB enumeration and UART conversion rather than analog measurement, the analog front end and instrumentation-specific interface electronics must still be designed separately.

🌐

Industrial Controller Gateway

The CP2108-B01-GM can form the serial side of an industrial controller gateway connected to a USB host such as a gateway computer, test station, or service console. Four UART buses allow multiple downstream controllers or sensors to share one USB interface, while the integrated EEPROM supports product-specific USB descriptors. The device is useful when a legacy controller ecosystem already uses UART rather than Ethernet or a modern high-speed fieldbus. Firmware must implement routing, timeout handling, and error recovery for each channel. If the external links are RS-485, isolated transceivers, termination, protection, and grounding must be added according to the target network design.

🖥️

USB-to-Serial Service Console

A service console or configuration tool can use the CP2108-B01-GM to connect a host computer to four serial targets. The USB 2.0 full-speed interface is suitable for configuration, logging, and control traffic rather than high-throughput storage transfers. The four channels can connect to separate boards, sensors, or service ports, and full modem-control signals can support legacy handshaking. The device's integrated EEPROM helps maintain product identity across different service-console variants. A robust implementation should expose port selection clearly, handle simultaneous channel activity, and provide OS driver support for predictable enumeration. External transceiver selection depends on whether each target uses RS-232, RS-485, or another electrical interface.

💻

Legacy Peripheral Consolidation

The CP2108-B01-GM can consolidate several legacy peripheral interfaces into one USB-connected board. A single package contains the USB controller, transceiver, oscillator, EEPROM, four UARTs, and digital I/O, reducing the number of separate bridge components. This is useful when a product has retained multiple serial peripherals but wants a single USB cable to a modern host. The board designer must allocate pins and routing for all four channels, verify the package's exposed-pad requirements, and provide the correct external line drivers. EEPROM customization can distinguish the product from generic CP2108-based adapters. Software should validate channel status and serial settings before attempting a connection.

What is the CP2108-B01-GM?
The CP2108-B01-GM is a Silicon Labs single-chip USB 2.0 full-speed to quad-UART bridge controller. According to the manufacturer datasheet, it integrates a USB function controller, USB transceiver, oscillator, EEPROM, four asynchronous UART data buses, full modem-control signals, and 16 digital I/O pins in a 9 mm x 9 mm 64-pin QFN package. It is intended for RS-232 and RS-485 designs that need to migrate to USB.
How many UART ports does the CP2108-B01-GM provide?
The CP2108-B01-GM provides four asynchronous UART data buses with full modem-control signals. The manufacturer datasheet identifies the device as a USB-to-quad-UART bridge, while the manufacturer product page identifies 16 digital I/O pins. This makes the IC suitable for systems that need multiple independent serial channels connected through one USB interface.
What package does the CP2108-B01-GM use?
The CP2108-B01-GM is packaged as a 64-pin QFN measuring 9 mm x 9 mm. The DigiKey listing describes the family as a 64-QFN USB-to-UART bridge, and the manufacturer product page confirms a QFN64 package. Because the package has 64 leads and an exposed-pad implementation, PCB layout and thermal design must follow the manufacturer package drawing.
Where can I download the CP2108-B01-GM datasheet?
The official CP2108 datasheet PDF is available from Silicon Labs at https://www.silabs.com/documents/public/data-sheets/cp2108-datasheet.pdf. The search results also show third-party copies and an all-datasheet listing, but the Silicon Labs link is the authoritative source for the CP2108 family. The retrieved all-datasheet result identifies the document as 30 pages, while the manufacturer PDF should be used for design verification.
Is the CP2108-B01-GM a USB 2.0 full-speed device?
Yes. The manufacturer datasheet identifies the CP2108 as having a USB 2.0 full-speed function controller and integrated USB transceiver. The CP2108 is therefore a USB-to-UART bridge rather than a general-purpose USB host controller. Its four UART channels operate on the serial side, while the USB interface connects the device to a host computer.
What is the difference between CP2108-B01-GM and CP2108-B01-GMR?
CP2108-B01-GM and CP2108-B01-GMR are associated with the same CP2108 device family and the same 64-pin QFN-class USB-to-UART functionality, but the supplied data identifies them as different orderable entries. The verified search results explicitly describe CP2108-B01-GMR as a replacement candidate with consistent terminals and packages, while the exact CP2108-B01-GM listing is marked obsolete by the supplied GlobalSpec result. Confirm the exact package, marking, and lifecycle status with the manufacturer before substitution.
What can replace the CP2108-B01-GM?
The closest supplied replacement candidates are CP2108-B01-GMR, CP2108-B02-GM, CP2108-B03-GMR, and CP2108-B03-GM. The verified search data identifies CP2108-B01-GMR as having consistent terminals and packages, and it also lists the B02 and B03 variants as cross-reference alternatives. Because revision-specific USB identifiers and EEPROM customization may differ, verify the exact firmware, VID, PID, and UART requirements before replacing the CP2108-B01-GM.
Is CP2108-B01-GM suitable for four serial devices?
The CP2108-B01-GM is designed for four UART buses, so it is suitable when the system needs four serial connections behind one USB controller. The manufacturer describes four asynchronous serial data buses with full modem-control signals and 16 digital I/O pins. Firmware must enumerate and manage all four ports, and each external interface still needs the appropriate electrical transceiver or protection circuitry when the target standard requires it.
Where can I buy the CP2108-B01-GM?
The verified search results list Mouser, DigiKey-related records, Octopart, and other distributors for CP2108-B01-GM or its family. The Mouser product page is https://www.mouser.com/ProductDetail/Silicon-Labs/CP2108-B01-GM?qs=u649AIwumF9Z2xM7V0eMaw%3D%3D, and the Octopart page is https://octopart.com/cp2108-b01-gm-silicon+labs-24787873. Current price and stock should be confirmed with the distributor because the supplied data does not provide verified numeric pricing or stock.
What is the lead time for the CP2108-B01-GM?
The current lead time is not available in the supplied verified data. The available results show distributor pages and cross-reference records, but they do not provide a confirmed factory lead time for CP2108-B01-GM. Because the part is identified as obsolete in the supplied GlobalSpec result, procurement should request a written lifecycle and supply status from Silicon Labs or an authorized distributor before committing a new production design.
Is the CP2108-B01-GM in stock?
The supplied data does not explicitly confirm current stock for CP2108-B01-GM. A distributor listing or search result does not by itself establish inventory, and the supplied GlobalSpec result labels the part obsolete. Check the distributor inventory page or submit an RFQ, and do not use the Part schema as proof of in-stock status unless the seller explicitly confirms stock.
What are the key specifications of CP2108-B01-GM that engineers should know?
The key verified specifications are four UART buses, USB 2.0 full-speed operation, 16 digital I/O pins, full modem-control signals, an integrated USB transceiver and oscillator, customizable on-chip EEPROM, and a 9 mm x 9 mm 64-pin QFN package. The manufacturer datasheet also identifies custom USB VID, PID, product description, power descriptor, release number, and interface strings. Exact voltage, temperature, and timing limits require direct verification from the manufacturer PDF.
How do I compare CP2108-B01-GM with a CP2108-B03-GM?
CP2108-B01-GM and CP2108-B03-GM are both listed in the CP2108 family and use the same 64-QFN form factor, but revision-level USB identity and ordering details may differ. The supplied cross-reference data does not provide a full electrical comparison for the exact variants, so values such as supply voltage, operating temperature, and interface configuration should be checked in the manufacturer datasheet and product records. Do not assume that matching package dimensions alone guarantees identical USB descriptors or firmware behavior.
Can CP2108-B03-GMR replace CP2108-B01-GM?
CP2108-B03-GMR is listed as a cross-reference candidate, but the supplied data does not prove that it is a functional drop-in replacement for CP2108-B01-GM. The candidate appears in the same CP2108 family and QFN64 package class, yet revision, USB VID/PID, EEPROM configuration, and driver behavior must be verified. Treat it as a qualified replacement candidate, not an unconditional substitute, until the manufacturer documentation and application requirements are checked.
Why does the CP2108-B01-GM include an EEPROM?
The on-chip EEPROM provides a way to customize the USB identity and product information without relying only on fixed device descriptors. The manufacturer datasheet identifies support for USB VID, PID, product description string, power descriptor, device release number, and interface strings. This is useful when multiple products need distinct USB identities, but customization programming and the applicable device-revision procedure must be followed exactly.

Technische Referenzdaten für CP2108-B01-GM – Vergleich, Designhinweise und Compliance-Informationen.

Auswahlhilfe

Choose the CP2108-B01-GM when a design specifically requires the verified CP2108 B01 configuration with four UART channels, full modem-control signals, 16 digital I/O pins, and customizable USB identification. Review CP2108-B01-GMR first when the exact B01 function is acceptable and a same-family orderable variant may simplify sourcing; confirm descriptors and lifecycle status before using it. CP2108-B02-GM and the B03 variants should be selected only after checking their revision-specific USB identity, EEPROM behavior, electrical limits, and production status. None of the supplied cross-reference records establishes a complete cross-brand, pin-to-pin equivalent. For new designs, prefer a currently supported part unless supply continuity or an existing design makes the CP2108 family necessary.

Vergleich mit Alternativen

Parameter Dieses Produkt CP2108-B01-GMR CP2108-B02-GM CP2108-B03-GMR CP2108-B03-GM
Package 64-pin QFN, 9 mm x 9 mm 64-pin QFN, 9 mm x 9 mm 64-pin QFN, 9 mm x 9 mm 64-pin QFN, 9 mm x 9 mm 64-pin QFN, 9 mm x 9 mm
Brand Silicon Labs Silicon Labs Silicon Labs Silicon Labs Silicon Labs
Function USB 2.0 full-speed to quad-UART bridge Same CP2108 USB-to-UART bridge family Same CP2108 USB-to-UART bridge family Same CP2108 USB-to-UART bridge family Same CP2108 USB-to-UART bridge family
UART Channels 4 asynchronous UART buses 4-channel CP2108 family function; exact variant details need verification 4-channel CP2108 family function; exact variant details need verification 4-channel CP2108 family function; exact variant details need verification 4-channel CP2108 family function; exact variant details need verification

Wichtigste Unterscheidungsmerkmale

  • Four UART buses in one USB bridge (vs. CP2108-B01-GMR)
  • Integrated customization and interface functions (vs. CP2108-B02-GM)
  • Compact QFN64 implementation (vs. CP2108-B03-GM)

Designhinweise

Route the four UART channels and associated modem-control signals according to the manufacturer pinout and recommended layout. Keep USB differential routing short, controlled, and away from noisy UART outputs where practical. The verified data identifies a 9 mm x 9 mm 64-pin QFN package, but exact pin names, exposed-pad connections, and recommended land pattern must be taken from the official CP2108 datasheet before layout release.

The supplied data does not state the CP2108-B01-GM supply-voltage range or absolute maximum ratings. Do not infer power-rail values from the USB or UART interface descriptions. Confirm the electrical limits, decoupling requirements, and power-sequencing requirements in the official Silicon Labs datasheet, then validate startup and shutdown behavior across all four UART ports.

A same-package replacement is not automatically a functional replacement. The B01, B02, and B03 revisions may differ in USB descriptors, VID/PID, EEPROM customization, or revision-related behavior. The supplied cross-reference data identifies candidates, but it does not provide a complete exact-variant electrical comparison. Verify the manufacturer revision information, pinout, EEPROM contents, driver behavior, and production supply status before substitution.

The CP2108-B01-GM is an interface IC rather than a power semiconductor, so a Safe Operating Area chart is not applicable. Thermal design should still account for the QFN exposed pad and the actual package land pattern. The supplied data does not include junction-temperature limits or package thermal resistance; use the manufacturer package information for a validated thermal layout rather than estimating those values from device function.

Compliance-Informationen

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Bleifrei
Unknown
Halogenfrei
Unknown
Konfliktmineralien
Unknown

The supplied search data does not provide verified compliance statements for the exact CP2108-B01-GM. AEC-Q100 is not applicable because this is an interface IC rather than an automotive-qualified power or mixed-signal component. Check the current manufacturer product documentation for RoHS, REACH, lead-free, halogen-free, and conflict-minerals status.

Ähnliche Suchanfragen

CP2108-B01-GM CP2108-B01-GM datasheet Silicon Labs CP2108-B01-GM USB 2.0 quad UART bridge CP2108 4 UART channels CP2108 64-QFN USB-to-UART CP2108-B01-GM RS-232 USB migration CP2108-B01-GM replacement CP2108-B01-GM buy online CP2108-B01-GM price CP2108-B01-GM pinout CP2108-B01-GM vs CP2108-B01-GMR USB quad UART industrial controller CP2108 USB-to-RS-485 bridge

Verwandte Bauteile & Begriffe

Silicon Labs CP2108-B01-GM CP2108 USB 2.0 full-speed USB function controller USB transceiver UART quad-UART bridge RS-232 RS-485 EEPROM 16 digital I/O pins full modem-control signals 64-pin QFN QFN64 9 mm x 9 mm package surface mount Silicon Labs CP2108 datasheet USB Vendor ID USB Product ID industrial serial interface instrumentation USB-to-serial migration CP2108-B01-GMR CP2108-B02-GM CP2108-B03-GMR CP2108-B03-GM
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