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General Description

The SKIDERFlex Tiny USB Hub is a tiny USB Hub with 4 downstream ports. It utilizes the SKIDERFlex mounting system with various castellated holes for easy and rapid integration in every project or product. You will not have to fiddle with tiny SMD componentens to integrate this USB Hub into your design.


  • 4 downstream USB 2.0 ports
  • 1 upstream USB 2.0 ports
  • supports low-speed, full-speed, and hi-speed devices
  • external 3.3V supply
  • supports industrial temperature range (-40°C to +85°C)
  • no external components needed for basic operation (except power supply and connections)
  • tiny form factor (12.7mm x 17.8mm)
  • compatible with breadboards (only for testing / could affect signal quality)

Operating Instructions

The USB upstream and downstream ports do not implement any protection against electromagnetic interference (EMI) and should therefore only be used with according protection circuits. A suitable connector which includes the required protection circuit can be purchased at

Electrical Characteristics

DC Characteristics

Description Value Unit
Maxmimum Current Consumption 50 mA
Minimum Input Voltage 3.0 V
Typical Input Voltage 3.3 V
Maximum Input Voltage 3.6 V

Block Diagram

Block Diagram



Pin Name Description
1 nRST Reset Input of USB Hub IC. Can be driven low to reset the IC.
2 +3.3V +3.3V Power Supply Pin. Supply current should be at least 50mA.
3 D- In USB Upstream D-
4 D+ In USB Upstream D+
6 D- USB1 USB Port 1 Downstream D-
7 D+ USB1 USB Port 1 Downstream D+
8 D+ USB4 USB Port 4 Downstream D+
9 D- USB4 USB Port 4 Downstream D-
10 D+ USB3 USB Port 3 Downstream D+
11 D- USB3 USB Port 3 Downstream D-
12 D+ USB2 USB Port 2 Downstream D+
13 D- USB2 USB Port 2 Downstream D-

Other Specifications

Description Value Unit
Operating Temperature -40 to +85 °C
Storage Temperature -55 to +125 (Capacitors: +5C to +35°C, Resistors: 25°C±3°C) °C
Dimensions 12.7 x 17.8 x 2.5 mm
Weight TBD g

Mechanical Drawing

Mechanical Drawning

Typical Application

The SKIDERFlex Tiny USB Hub is intended for use on an application specific circuit board. Premade circuit boards can be acquired at (link to be verified). If you want to integrate the SKIDERFlex Tiny USB Hub into your own design, a KiCad Library can be found at (link to be verified). If you choose to integrate it into your own design, just connect the respective pins to their according lanes. No filter capacitors or termination resistors are needed. The nRST pin is usally not needed and can be left floating.

Typical Application Schematic

If you need to integrate a suitable +3.3V power supply into your design check out our respective module at (link to be verified)

Environmental Compliance

The SKIDERFlex Tiny USB Hub is compliant with RoHS III (EU 2015/863). For more information please contact us at (e-mail to be verified)

Declaration of Conformity

Potentially compliant with 2014/30/EU. (definitely to be verified -> potentially no CE applicable / 2014/35/EU not applicable due to voltage < 75V)

Product Revisions

  • Version 1.1:
  • initial revision

Contact Information

If you have any further questions regarding this product, please feel free to contact us under (e-mail to be verified)

© 2023 Smart Robotic Systems GmbH