USB3347-CP Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip USB3347-CP is a USB 2.0 ULPI transceiver supporting 1.8 V and 3.3 V I/O interfaces with a 26 MHz reference clock in a 24-pin QFN package. It bridges USB 2.0 High Speed, Full Speed, and Low Speed traffic to ULPI-compatible USB controllers. Suitable for portable devices, wireless modems, and embedded USB host and device designs.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- USB3347-CP Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0353(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- USB 2.0 ULPI transceiver supporting High Speed (480 Mbps), Full Speed (12 Mbps), and Low Speed (1.5 Mbps) operation
- Dual I/O voltage support for 1.8 V and 3.3 V logic interface compatibility
- 26 MHz maximum reference clock for precise USB bit timing and PLL operation
- 24-pin VQFN-24 package enabling compact PCB integration with small thermal footprint
- UART and USB bus compatibility for flexible connectivity in embedded modem designs
Applications
The USB3347-CP is used in smartphones, wireless modems, and embedded Linux platforms as the physical-layer USB transceiver connecting a USB controller or ASIC to the USB cable interface. Its ULPI interface reduces pin count between the transceiver and host controller, making it practical for tablet SoC designs, portable test instruments, and industrial gateways needing reliable USB 2.0 connectivity.
Specifications
| Manufacturer Package Code | VQFN-24 |
| Factory Lead Time | 9Weeks |
| YTEOL | 14 |
| Bus Compatibility | UART; USB |
| Clock Frequency-Max | 26MHz |
| JESD-30 Code | S-PQCC-N24 |
| JESD-609 Code | e3 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG |
| Qualification Status | Not Qualified |
| Supply Current-Max | 52mA |
| Supply Voltage-Max | 2V |
| Supply Voltage-Min | 1.6V |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | BUS CONTROLLER, UNIVERSAL SERIAL BUS |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which USB speeds does USB3347-CP support, and is it backward compatible with Full Speed and Low Speed USB devices?
The USB3347-CP supports all three USB 2.0 speeds: High Speed at 480 Mbps, Full Speed at 12 Mbps, and Low Speed at 1.5 Mbps. This full backward compatibility allows a single USB port design to enumerate legacy USB 1.1 devices such as keyboards and mice alongside modern USB 2.0 mass storage devices without additional hardware switching circuitry.
How does the dual 1.8 V and 3.3 V I/O support in USB3347-CP simplify interfacing with modern application processors?
Many application processors and SoCs use 1.8 V I/O for ULPI bus signaling while USB PHY supply rails run at 3.3 V. The USB3347-CP accommodates both voltage levels on its I/O interface, eliminating external level-shifting logic between the transceiver and a 1.8 V processor ULPI port and reducing component count in portable device power domains.
What VQFN-24 footprint dimensions should be considered when routing USB3347-CP on a four-layer PCB?
The USB3347-CP is housed in a 24-pin VQFN package with a 0.16 square inch body footprint and 0.5 mm pin pitch. For USB signal integrity, the D+ and D- differential pairs should be routed as matched-length 90-ohm impedance traces with minimized vias, and the exposed pad should be soldered to a ground plane for thermal dissipation and noise shielding.
What is the lead time for USB3347-CP and are pin-compatible ULPI transceiver alternatives available?
The USB3347-CP carries a factory lead time of approximately 9 weeks. Designers evaluating pin-compatible ULPI transceiver alternatives should verify ULPI register map compatibility and USB electrical specification compliance. The USB3347 family includes package variants, and procurement teams should assess distributor stock levels alongside lead time when planning production builds of 1,000 units or more.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
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