VERIFIED CROSS-REFERENCE
CP2102 alternatives & equivalent parts
USB-to-UART bridge for USB connectivity in embedded designs. — common packages: QFN-28 (5 x 5 mm). Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.
4 verified alternatives for CP2102
| Alternative | Manufacturer | Relationship | Key differences | Source |
|---|---|---|---|---|
| CP2102N-A02-GQFN28 | Silicon Labs | Pin-to-pinDrop-in: same footprint and pinout. | Silicon Labs states the CP2102N QFN28 is pin compatible with CP2101/2/9; newer generation with integrated clock (no external crystal), 960-byte config ROM, and 300 baud to 3 Mbaud. | Silicon Labs 官方数据手册 |
| CP2102N-A02-GQFN24 | Silicon Labs | FunctionalSame function: board or design change needed. | Same CP2102N family in QFN-24 (4x4mm) - pin compatible with CP2104, not with the QFN28 base part - footprint change required. | Silicon Labs 官方数据手册 |
| FT232RL | FTDI | FunctionalSame function: board or design change needed. | FTDI USB-to-UART with full modem signals in SSOP-28, 300 baud to 3 Mbaud - different package, pinout, and FTDI VCP/D2XX drivers. | FTDI 官方数据手册 |
| CH340G | WCH | FunctionalSame function: board or design change needed. | WCH USB-to-UART in SOP-16, up to 2 Mbps - requires an external 12 MHz crystal; uses WCH CH341 drivers; official WCH datasheet (Chinese-language version). | WCH 官方资料 |
Pre-replacement checklist
- Match the QFN-28 land pattern between CP2102 and CP2102N-A02-GQFN28; re-lay out the board for other packages.
- Confirm clocking: CP2102N integrates the clock; CH340G requires an external 12 MHz crystal.
- Update USB VID/PID and ship the matching VCP driver (Silicon Labs, FTDI, or WCH) with the product.
- Re-validate suspend current, reset behavior, and handshake-signal wiring per the chosen datasheet.
Need the exact lot, date code or a second source quoted?
Send the original MPN and the approved alternative. Sourceics reconfirms source, stock, date code and commercial terms before any order — no substitution without your engineering approval.
Request a quote for CP2102Source part reference: Silicon Labs 官方数据手册. Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.