General Description
The MAX3349EA ±15kV ESD-protected, USB transceiver provides a full-speed USB interface to a lower voltage microprocessor or ASIC. The device supports enumeration, suspend, and VBUS detection. A special UART multiplexing mode routes external UART signals (Rx and Tx) to D+ and D-, allowing the use of a shared connector to reduce cost and part count for mobile devices.

Features
♦ ±15kV ESD HBM Protection on D+ and D-
♦ UART Mode Routes External UART Signals to
   D+/D-
♦ Internal Linear Regulator Allows Direct Powering
   from the USB Cable
♦ Separate Voltage Input for UART
   Transmitter/Receiver (VUART)
♦ Internal 1.5kΩ Pullup Resistor on D+ Controlled
   by Enumerate Input
♦ Internal Series Termination Resistors on D+ and D-
♦ Complies with USB Specification Revision 2.0,
   Full-Speed 12Mbps Operation
♦ Built-In Level Shifting Down to +1.4V, Ensuring
   Compatibility with Low-Voltage ASICs
♦ VBUS Detection
♦ Combined VP and VM Inputs/Outputs
♦ No Power-Supply Sequencing Required
♦ Available in 16-Bump UCSP (2mm x 2mm)
   Package

Applications
   Cell Phones
   PDAs
   Digital Cameras
   MP3 Players