USB3346-CP Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip USB3346-CP is a USB 2.0 ULPI PHY transceiver with 19.2 MHz reference clock, 8-bit ULPI bus interface, and 3.3 V supply in a 24-pin VQFN package. It connects USB host or device controllers without built-in PHY to the USB data bus. Available in stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- USB3346-CP Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2800(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Full-speed and high-speed USB 2.0 ULPI PHY at up to 480 Mbps connects external USB controllers via an 8-bit parallel ULPI interface
- 19.2 MHz external reference clock input with integrated PLL supports standard TCXO and crystal oscillator sources for BOM flexibility
- Compact 24-pin VQFN package requires only 3.3 V supply and minimal external passives, simplifying USB PHY integration in FPGAs and SoCs
Applications
The USB3346-CP is used in FPGA, SoC, and DSP designs where the on-chip USB controller lacks an integrated PHY and requires an external ULPI-compliant transceiver. It enables high-speed USB 2.0 device or OTG connectivity in industrial control platforms, test and measurement instruments, and embedded computing modules. The 8-bit ULPI interface keeps the signal count low, making PCB routing straightforward even in compact multi-layer designs.
Specifications
| Manufacturer Package Code | VQFN-24 |
| Factory Lead Time | 9Weeks |
| YTEOL | 14 |
| Additional Feature | IT ALSO REQUIRES 3.3V SUPPLY |
| Bus Compatibility | USB, VBUS |
| Clock Frequency-Max | 19.2MHz |
| External Data Bus Width | 8 |
| JESD-30 Code | S-XQCC-N24 |
| JESD-609 Code | e3 |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| 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) |
| HTS Code | 8542.31.00.30 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for USB3346-CP:
suggested
suggested
Frequently Asked Questions
What USB speeds does USB3346-CP support and which ULPI bus width does it use?
The USB3346-CP supports USB 2.0 full-speed at 12 Mbps and high-speed at 480 Mbps over an 8-bit ULPI parallel interface. The 8-bit bus transfers USB data between the external USB controller and the PHY at sufficient throughput to sustain maximum 480 Mbps high-speed USB bandwidth with low latency.
What reference clock frequency does USB3346-CP require and which oscillator types are compatible?
The USB3346-CP requires a 19.2 MHz external reference clock from a TCXO, MEMS oscillator, or crystal with an integrated PLL that generates internal USB clocking. This 19.2 MHz standard frequency is compatible with most off-the-shelf oscillator modules, and the internal PLL eliminates the need for a separate 480 MHz source in the system design.
In which FPGA development platforms is USB3346-CP typically used as an external USB PHY?
USB3346-CP is commonly used alongside Xilinx Zynq-7000 and Intel Cyclone V SoC FPGAs that include a USB OTG controller with ULPI interface but no integrated PHY. Connecting USB3346-CP via the 8-bit ULPI interface adds USB 2.0 host or device capability at 480 Mbps without modifying the FPGA fabric, using only 12 signal lines in the 24-pin VQFN footprint.
What supply voltage does USB3346-CP require and how many external components are needed for a basic USB 2.0 circuit?
USB3346-CP operates from a 3.3 V supply and requires only a 19.2 MHz oscillator, decoupling capacitors of 100 nF per supply pin, and USB connector ESD protection diodes for a complete USB 2.0 high-speed circuit. The integration of the PLL, biasing, and HS squelch detector inside the 24-pin VQFN keeps the total passive component count below 10 parts.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $1.3200 | $132.00 |
| 1000+ | $1.2900 | $1290.00 |
| 5000+ | $1.2800 | $6400.00 |
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