Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Package | QFN-24-EP(4×4) |
| Supply voltage | 3.3V;5V |
| Data Rate | 3Mbps |
| Operating Temperature | -40℃~+85℃ |
| Number of ports | 2 |
| Features | Hardware flow control support;Programmable baud rate;Power-on reset;Low-power mode;Wake-up function;Built-in clock generator |
| Applications Function | USB to serial |
Product Overview
CH342F is a WCH interface controller identified by the exact orderable code CH342F. Its confirmed technical identity includes Supply voltage 3.3V;5V, Data Rate 3Mbps, Operating Temperature -40℃~+85℃, Number of ports 2.
The exact device is described as: 2 USB to serial 3Mbps USB 2.0 QFN-24-EP(4×4) Interface Controllers. Selection should be based on the exact package and the operating conditions required by the design, rather than on a nearby family member or a generic part number.
Technical Specifications
| Parameter | Value |
|---|---|
| Package | QFN-24-EP(4×4) |
| Supply voltage | 3.3V;5V |
| Data Rate | 3Mbps |
| Operating Temperature | -40℃~+85℃ |
| Number of ports | 2 |
| Features | Hardware flow control support;Programmable baud rate;Power-on reset;Low-power mode;Wake-up function;Built-in clock generator |
| Applications Function | USB to serial |
| Quiescent Supply Current | 160uA |
| USB Protocol | USB 2.0 |
| Current – Supply | 15mA |
Exact-Part Selection Insight
The exact transceiver/interface part is rated for 3Mbps data rate from 3.3V;5V supplies. Bus termination, common-mode range, node count and logic-side voltage must match the target network; a protocol-family label by itself is not enough to establish substitution compatibility.
Selection Notes
- Package: QFN-24-EP(4×4)
- Supply voltage: 3.3V;5V
- Data Rate: 3Mbps
- Operating Temperature: -40℃~+85℃
- Number of ports: 2
Application Fit
This exact part is appropriate for designs that require a interface controller with the confirmed package and electrical/function parameters above. Final fit depends on the surrounding circuit, interface, thermal and mechanical requirements of the target design.
Design Considerations
Confirm the available supply rail stays inside the stated operating range, including startup and transient conditions.
Verify interface voltage levels, bus topology and timing/data-rate requirements against the rest of the system.
Use the exact QFN-24-EP(4×4) footprint/package definition when checking PCB land pattern, assembly clearance and sourcing equivalence.
Related Engineering Resources
- Datasheet — verified HKEQGOO-hosted technical document for this exact product identity.
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
