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Microchip Technology USB3280-AEZG-TR
- Part No.:
- USB3280-AEZG-TR
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
USB3280-AEZG-TR.pdf
- Description:
- IC INTERFACE SPECIALIZED 36QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,120
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Product details
Overview
USB3280-AEZG-TR from Microchip Technology is a USB 2.0 Hi-Speed physical layer (PHY) transceiver IC designed for UTMI+ interface connectivity between SoC/ASIC/FPGA device controllers and the USB cable. It supports 480 Mbps Hi-Speed and 12 Mbps Full-Speed data rates, integrates 45 Ω HS and 1.5 kΩ FS termination resistors, operates from a single +3.3 V supply, and features on-chip 24 MHz crystal oscillator support - enabling compact, low-component-count peripheral designs such as portable media players and digital cameras.
For engineers reviewing the USB3280-AEZG-TR datasheet, USB3280-AEZG-TR pinout, USB3280-AEZG-TR application, or USB3280-AEZG-TR equivalent, key selection considerations include UTMI+ timing compliance at 60 MHz, integrated biasing and termination, industrial temperature operation (–40°C to +85°C), suspend current of 83 µA, and USB-IF Hi-Speed certification per USB 2.0 electrical specification.
Technical Context
The USB3280-AEZG-TR implements a dual-mode PHY with separate HS and FS transceiver paths controlled by XCVRSELECT and TERMSELECT inputs. Its clock recovery unit uses a PLL locked to an external 24 MHz crystal to generate a stable 480 MHz internal clock and a synchronized 60 MHz CLKOUT for UTMI+ interface timing - maintaining strict USB 2.0 eye pattern compliance for both transmit (Template 1) and receive (Template 4).
Transmit logic performs NRZI encoding, bit stuffing, and SYNC/EOP generation; receive logic executes NRZI decoding, bit unstuffing, and error detection (RXERROR). The integrated 1.8 V regulator supplies VDD1.8 and VDDA1.8 from the 3.3 V rail, eliminating need for external LDOs while supporting bus-powered operation with 55 mA typical unconfigured current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 480 Mbps Hi-Speed and 12 Mbps Full-Speed - enables backward-compatible USB 2.0 peripheral operation in both modes. |
| Interface Standard | UTMI+ Level 3 compliant (60 MHz, 8-bit bidirectional) - ensures interoperability with standard USB device controller IP cores. |
| Supply Voltage | +3.3 V only - simplifies power design; internal 1.8 V regulator eliminates need for second supply rail. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer portable applications including cameras and media players. |
| Suspend Current | 83 µA typical - meets USB battery-powered device requirements without external power gating. |
| ESD Protection | ±5 kV HBM - provides robustness against handling and system-level ESD without external protection diodes. |
| Termination | Integrated 45 Ω HS and 1.5 kΩ FS pull-up - reduces BOM count and PCB footprint versus discrete resistor solutions. |
Pinout & Package
USB3280-AEZG-TR is housed in a 36-pin, 6 × 6 × 0.90 mm RoHS-compliant QFN package with exposed thermal pad (connected to GND). Pin numbering follows top-view layout with pin 1 at top-left corner; flag must be grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP / DM | USB differential I/O | Direct connection to USB cable; supports HS/FS signaling with integrated termination and short-circuit protection. |
| DATA[7:0] | UTMI+ bidirectional data bus | 8-bit parallel path for packet data transfer synchronized to 60 MHz CLKOUT; direction controlled by TXVALID state. |
| TXVALID / TXREADY | Transmit handshake control | TXVALID initiates packet transmission and SYNC generation; TXREADY acknowledges byte acceptance on rising CLKOUT edge. |
| RXVALID / RXACTIVE / RXERROR | Receive status outputs | RXVALID signals valid byte ready on DATA bus; RXACTIVE frames packet boundaries; RXERROR flags NRZI/bit-stuffing errors. |
| XCVRSELECT / TERMSELECT | Mode configuration inputs | Select HS vs. FS transceiver path and termination network independently - enables dynamic mode switching during operation. |
| CLKOUT | System clock output | 60 MHz clock derived from 24 MHz crystal via PLL; used to synchronize all UTMI+ interface timing and data transfers. |
| REG_EN / VDD1.8 / VDDA1.8 | On-chip regulator control | REG_EN enables internal 1.8 V digital/analog regulators; eliminates need for external LDOs when using single 3.3 V supply. |
| RBIAS / XI / XO | Oscillator bias and crystal interface | RBIAS sets HS drive current via 12 kΩ resistor; XI/XO accepts 24 MHz fundamental-mode crystal for precise clock generation. |
Key Features
| Feature | Design Value |
|---|---|
| USB-IF Hi-Speed certified | Meets full USB 2.0 electrical compliance including eye pattern (Template 1/4), jitter tolerance, and chirp signaling - ensures interoperability with host hubs and PCs. |
| Integrated 45 Ω / 1.5 kΩ terminations | Eliminates 3 external resistors per USB port, reducing component count, layout area, and signal integrity risk from trace mismatch. |
| On-chip 24 MHz crystal oscillator | Supports low-cost, high-accuracy clock source without external oscillator IC - simplifies BOM and improves timing margin over RC-based alternatives. |
| Single 3.3 V supply operation | Internal 1.8 V regulator powers digital and analog blocks - removes need for dual-rail power design and associated filtering components. |
| Industrial temperature range | Validated from –40°C to +85°C - enables deployment in automotive infotainment accessories, industrial scanners, and outdoor portable equipment. |
Applications
| Cell Phones | MP3 Players |
|---|---|
Use Scenario: Integrating USB 2.0 device functionality into compact handheld form factors with strict power and space constraints. IC Role / Device Role / Timing Role: USB3280-AEZG-TR serves as the PHY layer bridging the baseband SoC's UTMI+ interface to the USB connector, handling NRZI encoding, bit stuffing, and HS/FS mode switching. Use Value: 83 µA suspend current and single 3.3 V supply reduce battery drain and simplify power architecture versus multi-rail PHY solutions. | Use Scenario: Enabling high-speed firmware updates and media file transfers between portable audio devices and host PCs. IC Role / Device Role / Timing Role: USB3280-AEZG-TR provides certified Hi-Speed USB 2.0 connectivity with minimal external components, interfacing directly to the media processor's UTMI+ port. Use Value: Integrated 45 Ω termination and on-chip oscillator eliminate 4 passive components, shrinking PCB area by >12 mm² versus discrete PHY implementations. |
| Digital Cameras | External Hard Drives |
Use Scenario: Supporting rapid photo/video transfer from DSLR and mirrorless cameras to computers without requiring proprietary dock hardware. IC Role / Device Role / Timing Role: USB3280-AEZG-TR acts as the physical layer transceiver, converting parallel UTMI+ packets from the image processor into compliant USB differential signals on DP/DM. Use Value: USB-IF certification guarantees plug-and-play compatibility with Windows/macOS hosts and avoids costly retesting of custom PHY designs. | Use Scenario: Adding USB 2.0 host-to-device connectivity to portable SSD enclosures powered solely from the USB bus. IC Role / Device Role / Timing Role: USB3280-AEZG-TR functions as the bus-powered USB device PHY, managing suspend/resume states and HS chirp detection for seamless enumeration. Use Value: 55 mA unconfigured current allows full operation under USB bus power limits (500 mA), eliminating need for external power adapters in portable storage designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB 2.0 PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMSC USB3320 | Requires separate 1.8 V supply; no integrated crystal oscillator; supports ULPI instead of UTMI+. | Targeted at host-side or OTG applications with ULPI controllers; not drop-in compatible with UTMI+ SoCs. | Select only if migrating to ULPI interface and external clock source is acceptable. |
| ON Semiconductor NB3N3020B | Single-ended LVCMOS interface (not UTMI+); no integrated termination; rated for commercial temp only (0°C to +70°C). | Designed for low-cost embedded peripherals where USB certification and industrial temp are not required. | Use only in cost-sensitive, non-certified, non-industrial applications with compatible controller interface. |
Compared with USB3280-AEZG-TR, SMSC USB3320 requires redesign of power delivery and clocking infrastructure, while NB3N3020B lacks USB-IF certification and industrial temperature support - making USB3280-AEZG-TR the optimal choice for certified, bus-powered, UTMI+-based peripheral designs operating across extended temperature ranges.
Availability
USB3280-AEZG-TR is available at Aetrix Electronics and suitable for cell phones, digital cameras, and portable media players requiring stable component supply, long-term lifecycle support, and guaranteed USB-IF compliance.
Supply support for USB3280-AEZG-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a global semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions, with a focus on embedded control and low-power design.
The USB3280 product line delivers certified, single-supply USB 2.0 PHYs optimized for UTMI+-based peripheral SoCs in portable and industrial applications - emphasizing integration, power efficiency, and USB compliance.
FAQ
What interface standard does the USB3280-AEZG-TR support?
The USB3280-AEZG-TR supports the UTMI+ Level 3 interface standard with a 60 MHz, 8-bit bidirectional parallel bus. It is fully compliant with the USB Transceiver Macrocell Interface specification and interfaces directly to USB device controller IP cores in ASICs, SoCs, and FPGAs - enabling seamless integration without protocol translation logic.
Does the USB3280-AEZG-TR require an external crystal?
Yes, the USB3280-AEZG-TR requires an external 24 MHz fundamental-mode crystal connected between XI and XO pins. The on-chip oscillator circuit uses this crystal to generate the precise 480 MHz internal clock and 60 MHz CLKOUT signal - no external oscillator IC is needed, but the crystal itself is mandatory for USB 2.0 timing compliance.
What is the power supply requirement for USB3280-AEZG-TR?
The USB3280-AEZG-TR operates from a single +3.3 V supply (VDD3.3) across 3.0 V to 3.6 V. An internal 1.8 V regulator generates VDD1.8 and VDDA1.8, eliminating the need for external LDOs. REG_EN pin controls regulator enable/disable - when asserted, external 1.8 V supplies are unnecessary.
Is USB3280-AEZG-TR USB-IF certified?
Yes, the USB3280-AEZG-TR is USB-IF "Hi-Speed" certified to the USB 2.0 electrical specification. Certification covers full compliance with eye pattern templates (Transmit Template 1, Receive Template 4), jitter tolerance, HS chirp signaling, and differential impedance - ensuring interoperability with certified hosts and hubs without additional validation.
What is the operating temperature range of USB3280-AEZG-TR?
The USB3280-AEZG-TR is specified for industrial temperature operation from –40°C to +85°C. This range is validated across all electrical parameters including HS/FS signaling margins, clock stability, and suspend current - making it suitable for portable consumer electronics, industrial scanners, and automotive accessory applications.
USB3280-AEZG-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- USB
- Interface:
- UTMI
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 36-QFN (6x6)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
USB3280-AEZG-TR FAQ
1.How can I place an order for USB3280-AEZG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for USB3280-AEZG-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for USB3280-AEZG-TR reliable?
The price and inventory of USB3280-AEZG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USB3280-AEZG-TR is usually 5 days.
3.What payment methods are accepted for USB3280-AEZG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USB3280-AEZG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USB3280-AEZG-TR?
USB3280-AEZG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USB3280-AEZG-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for USB3280-AEZG-TR?
For technical support, including USB3280-AEZG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USB3280-AEZG-TR requirements.
6.How does Aetrix verify that USB3280-AEZG-TR is sourced from the original manufacturer or authorized distributors?
All USB3280-AEZG-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that USB3280-AEZG-TR meets industry standards.
7.What is the process for return or replacement of USB3280-AEZG-TR?
All USB3280-AEZG-TR units undergo pre-shipment inspection (PSI). If there is an issue with USB3280-AEZG-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The USB3280-AEZG-TR part is unused and in its original packaging.
Return procedure for USB3280-AEZG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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