STUSB03E USB Transceiver General features Compliant to USB V2.0 for full-speed (12Mb/s) and low-speed (1.5Mbps) operation HBM = 14kV on D+, D lines 5kV on VBUS ESD Compliant to IEC-61000-4.2 (level 3) on D+, D- lines QFN16 (3mm x 3mm) Separate I/O supply with operation down to 1.6V Integrated 3.3V output LDO Very low power consumption to meet USB suspend current requirements detect the presence of the V voltage and BUS 2 features an internal D+ pull-up resistor Small QFN16 lead free package 3x3 mm implemented in accordance with the 27% resistor No power supply sequencing requirements ECN. Software controlled re-enumeration The STUSB03E also supports Sharing mode Integrated D+ pull-up resistor for FS operation when V is not present, which allows the D+/D BUS lines to be shared with other serial protocols. Description It supports both full-speed (12Mbps) and low- speed (1.5Mbps) operation. It is also designed to The STUSB03E is a single chip transceiver that operate down to 1.6V so that it is compatible with complies with the physical layer specifications of lower system voltages of most portable systems, the Universal Serial Bus (USB) v2.0 standard. It which include PDAs, MP3 Player and Cell phones. has an integrated 5V to 3.3V regulator which allows direct powering from the V . The BUS transceiver has an integrated voltage detector to Order code Part number Package Packaging STUSB03EQR QFN16 (3mm x 3mm) 3000 parts per reel March 2007 Rev. 2 1/20 www.st.com 20Contents STUSB03E Contents 1 Typical application 3 2 Pin configuration . 4 3 Functional tables 5 4 Maximum ratings 6 5 Electrical characteristics . 7 6 Timing diagram 11 7 Test circuits . 13 8 Functional description 15 9 Package mechanical data 16 10 Revision history . 19 2/20