CH334U-based USB 2.0 HUB

Overview: The CH334 is a full-speed USB 2.0 compliant device, supporting USB 2.0 high-speed 480Mbps downstream ports (4 downstream ports with time-sharing scheduling). It also supports high-performance industrial-grade design with a streamlined peripheral system, making it suitable for computer and industrial control motherboards. Features - 4-port USB hub, providing 4 USB 2.0 downstream ports - Supports independent power control for each port or overall gate control - Supports independent overcurrent detection for each port or overall gate control - Supports high-performance MTT mode, providing independent power for each port - Supports port status LED indicators - Can be configured via external EEPROM to support composite devices - Built-in information memory for industry-specific needs - Self-developed dedicated USB PHY, low-power technology - Can be configured for self-powered or bus-powered operation via I/O pins or external EEPROM - Provides crystal oscillator with built-in capacitor, supports external - Upstream port has built-in 1.5KΩ pull-up resistor, downstream port has built-in - Built-in LDO linear buck regulator to enhance USB 6KV ESD performance, Class 3A - Industrial-grade temperature range: -40～85℃ - Available in multiple small-size versions such as QFN28, SOP16, QSOP28
CH334U supports 5 LEDs:
 
physical demonstration
 
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