General Description

The MAX3349E ±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