Adafruit CH334F Mini 2-Port USB Hub Breakout

Sometimes, you have a USB host like an embedded Linux board and want to connect multiple devices. The Adafruit CH334F Mini 2-Port USB Hub Breakout is a compact USB hub perfect for embedding into enclosures or existing devices.

Featuring a CH334F USB 2.1 hub chip, it converts one high-speed port into two. Unlike typical USB hubs, this breakout provides 0.1" header or USB-C for upstream and four 4-pin ports for peripherals, allowing a very compact design without bulky downstream ports.

This product comes fully assembled and tested, with header pins included for breadboard use.

Features:

• CH334F USB 2.1 hub chip converting one USB port into two
• Compact design ideal for embedding into projects with four mounting holes
• Upstream connection via USB-C or 0.1" header; four 4-pin peripheral ports
• Supports high performance MTT mode with independent transaction translators
• Supports port status LED indicators
• USB pins have 6KV enhanced ESD performance, Class 3A
• Compliant with RoHS 2 directives

Technical Specifications:

• Dimensions: 24.0mm x 20.1mm x 5.0mm (0.9" x 0.8" x 0.2")
• Weight: 2.2g (0.1oz)
• 4-port USB HUB, backward compatible with USB 1.1 (though breakout supports only 2 ports)
• Built-in crystal oscillator with built-in capacitor
• Built-in 1.5KΩ pull-up resistor on upstream port
• Supports external 12 MHz input and built-in PLL with 480 MHz clock for USB PHY

Note: The breakout does not include typical downstream USB ports; users should solder directly to pads or use specialized USB breakout cables.