USB5434B-JZX Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip USB5434B-JZX is a USB 3.0 SuperSpeed 4-port hub controller IC supporting up to 625 MBps data transfer and I2C configuration, housed in a 64-pin QFN (9x9 mm) package. Operates from a 3.3 V supply with on-chip oscillator and supports both bus-powered and self-powered hub configurations. Available from global distributors with competitive pricing for consumer and industrial USB expansion designs.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 65
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- USB5434B-JZX Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- USB 3.0 SuperSpeed architecture delivers up to 625 MBps per port throughput, enabling fast peripherals like SSDs and high-speed cameras without bottlenecking
- Operates at 3.3 V supply with I2C interface for runtime configuration of VID/PID, port power management, and device descriptors
- 64-pin QFN (9x9 mm, 0.35 mm pitch) compact package integrates 4-port hub function with minimal external components for space-efficient docking station designs
- Supports both bus-powered and self-powered hub topologies with per-port over-current protection to meet USB-IF specifications
Applications
The USB5434B-JZX is designed for USB 3.0 hub expansion in docking stations, industrial panel computers, and embedded systems requiring multiple high-speed peripheral ports from a single upstream USB connection. Its I2C configuration interface allows OEM customization of USB descriptors at the factory without re-programming, which is valuable for white-label hub product lines. The 3.3 V single-supply operation and compact QFN footprint also suit portable multi-port USB adapters and ruggedized fieldbus gateway devices.
Specifications
| YTEOL | 3 |
| Additional Feature | ALSO OPRATES AT 3.3 V SUPPLY |
| Bus Compatibility | I2C; USB |
| Clock Frequency-Max | 25MHz |
| Data Transfer Rate-Max | 625MBps |
| JESD-30 Code | S-PQCC-N64 |
| JESD-609 Code | e3 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC64,.35SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Supply Voltage-Max | 1.31V |
| Supply Voltage-Min | 1.22V |
| Supply Voltage-Nom | 1.25V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | MATTE TIN |
| 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) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does USB5434B-JZX achieve 625 MBps throughput and how many downstream ports does it support simultaneously?
The USB5434B-JZX implements USB 3.0 SuperSpeed signaling at 5 Gbps line rate, which delivers a practical throughput of up to 625 MBps across its 4 downstream ports. The hub arbitrates bandwidth among connected devices, so simultaneous transfers share the 5 Gbps upstream bandwidth. This is sufficient for 4 connected USB 3.0 storage devices each achieving over 100 MBps without performance degradation on the upstream link.
For an industrial embedded system, how does I2C configuration of USB5434B-JZX simplify production programming?
The USB5434B-JZX supports I2C EEPROM attachment for storing USB VID, PID, device strings, and port power configuration. At power-up, the hub reads these parameters from the external EEPROM over I2C at up to 400 kHz, allowing factory customization without chip re-programming. This means the same hub IC can serve multiple product SKUs by swapping only the EEPROM contents, reducing inventory complexity in production runs.
What power supply requirements does USB5434B-JZX have and can it operate in a bus-powered hub design?
The USB5434B-JZX operates from a single 3.3 V supply rail. It supports both bus-powered configurations (powered entirely from the upstream USB 5 V VBUS through an external regulator) and self-powered designs using a dedicated adapter or board rail. Integrated per-port over-current protection monitors each of the 4 downstream ports and signals the host via the USB protocol, meeting USB-IF certification requirements without external current limiters.
When is USB5434B-JZX preferred over a USB 2.0 hub controller for a compact industrial gateway design?
USB5434B-JZX is the right choice when downstream peripherals require more than 60 MBps effective throughput per port — for example, USB 3.0 industrial cameras at 5 Gbps or solid-state storage devices exceeding 100 MBps read rates. The 64-pin QFN (9x9 mm) package keeps board area comparable to many USB 2.0 hub ICs while adding SuperSpeed capability. For designs where all peripherals are USB 2.0 at speeds below 480 Mbps, a USB 2.0 hub may suffice at lower cost.
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