SMSC’s USB334x is a family of Hi-Speed USB 2.0 Transceivers that provide a physical layer (PHY) solution well-suited for portable electronic devices. Both commercial and industrial temperature applications are supported. Each model in the USB334x family may use a 60MHz reference clock or the model-number specific reference clock. Several advanced features make the USB334x the transceiver of choice by reducing both eBOM part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external ESD protection devices in typical applications. The internal Over-Voltage Protection circuit (OVP) protects the USB334x from voltages up to 30V on the VBUS pin. By using a reference clock from the Link, the USB334x removes the cost of a dedicated crystal reference from the design. The USB334x includes integrated 3.3V and 1.8V regulators, making it possible to operate the device from a single power supply. The USB334x is optimized for use in portable applications where a low operating current and standby currents are essential. The USB334x operates from a single supply and includes integrated regulators for its supplies. The USB334x also supports the USB Link Power Management protocol (LPM) to further reduce USB operating currents. The USB334x family is enabled with SMSC's RapidCharge AnywhereTM which supports USB-IF Battery Charging 1.2 for any portable device. RapidCharge AnywhereTM provides three times the charging current through a USB port over traditional solutions which translate up to 1.5Amps via compatible USB host or dedicated charger. In addition, this provides a complete USB charging ecosystem between device and host ports such as Dedicated Charging Port (DCP), Charging (CDP) and Standard (SDP) Downstream Ports.
USB-IF Battery Charging 1.2 Specification Compliant Link Power Management (LPM) Specification Compliant Integrated ESD protection circuits Up to ±25kV IEC Air Discharge without external devices Over-Voltage Protection circuit (OVP) protects the VBUS pin from continuous DC voltages up to 30V Integrated USB Switch (USB3341) Allows single USB port of connection by providing switching function for: Battery charging Stereo and mono/mic audio USB Full-Speed/Low-Speed data SMSC RapidCharge Anywhere™ Provides: 3-times the charging current through a USB port over traditional solutions USB-IF Battery Charging 1.2 compliance to any portable device Charging current up to 1.5Amps via compatible USB host or dedicated charger Dedicated Charging Port (DCP), Charging (CDP) & Standard (SDP) Downstream Port support flexPWR® Technology Extremely low current design ideal for battery powered applications “Sleep” mode tri-states all ULPI pins and places the part in a low current state 1.8V to 3.3V IO Voltage Single Power Supply Operation Integrated 1.8V regulator Integrated 3.3V regulator 100mV dropout voltage PHYBoost Programmable USB transceiver drive strength for recovering signal integrity VariSenseTM Programmable USB receiver sensitivity “Wrapper-less” design for optimal timing performance and design ease Low Latency Hi-Speed Receiver (43 Hi-Speed clocks Max) allows use of legacy UTMI Links with a ULPI bridge Industrial Operating Temperature -40°C to +85°C 24 pin, QFN lead-free RoHS Compliant package (4 x 4 x 0.90 mm height)