From Microchip the USB3503 device is a High-Speed Inter-Chip (HSIC) USB 2.0 Hub Controller designed for use in portable applications requiring more than one USB port. Offering three downstream ports the USB3503 attaches to an upstream port via HSIC and supports low, full and hi-speed downstream devices on all enabled ports. Integrated into the device is Microchip’s RapidCharge Anywhere™ technology that provides USB-IF battery charging 1.1 specification to any portable device.
Features
Integrated USB 2.0-compatible 3-port hub HSIC upstream port Advanced power saving features including 1μA standby current USB-IF BC 1.1 detection Supports Single-TT or Multi-TT configurations for Full and Low-Speed connections Enhanced configuration options available through serial I2C slave port Internal default configuration option when serial I2C host is not available Incorporates Microchip’s MultiTRAK™, PortMap, PortSwap, PHYBoost, VariSense™ and flexPWR® technologies External 12 to 52 MHz clock inputs Internal 3.3V and 1.2V voltage regulators for single supply operation USB Port ESD Protection (DP/DM) up to ±15kV (IEC 61000-4-2)
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