TinyHub - 4-Port USB Hub with Multi-TT

Introduction

A tiny USB hub with support of Multi-TT (Transaction Translator), powered by CH334R.

3D Rendering View

License

CERN-OHL-P

EDA

KiCad 6.0.6

Usages

This PCB can be used with CH334R.

Fuse/1N4004 selection is depended on CH334 version:

• For the first version of CH334 with 0 in the penultimate 5 digits of the lot number, this device is changed to 1N4001 or similar diode.
• Otherwise, this device should be a 100mA fuse resistor, or for simplified applications, 0Ω can be used.

NOTE: For the first version of CH334R, it could be lack of Multi-TT support, and tools such as USBTreeView would report that hub is Single-TT. For my test, CH334R with the lot number 31160HC16 is NOT Multi-TT supported, and 31161HC43 is. I suggest to contact Qinheng for more information.

Schematics

TinyHub Schematic

BOM

TinyHub BOM

Product Page

USB HUB Controller – CH334/5 - NanjingQinhengMicroelectronics