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MAX3349EEBET Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3349EEBET Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page 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 enumer- ation, 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 con- nector to reduce cost and part count for mobile devices. The UART interface allows mobile devices such as PDAs, cellular phones, and digital cameras to use either UART or USB signaling through the same connector. The MAX3349E features a separate UART voltage sup- ply input to support legacy devices using +2.75V signal- ing. The MAX3349E supports a maximum UART baud rate of 921kbaud. Upon connection to a USB host, the MAX3349E enters USB mode and provides a full-speed USB 2.0-compliant interface through VP, VM, RCV, and OE. The MAX3349E features internal series termination resistors on D+ and D-, and an internal 1.5kΩ pullup resistor to D+ to allow the device to logically connect and disconnect from the USB while plugged in. A suspend mode is provided for low-power operation. D+ and D- are protected from electrostatic discharge (ESD) up to ±15kV. The MAX3349E is available in 16-pin TQFN (4mm x 4mm) and 16-bump UCSP™ (2mm x 2mm) packages, and is specified over the -40°C to +85°C extended tem- perature range. Applications 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 Hi-Speed USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode ________________________________________________________________ Maxim Integrated Products 1 19-3952; Rev 1; 5/11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information TQFN-EP (4mm x 4mm) ENUM 16 12 34 12 11 10 9 15 14 13 5 6 7 8 VM VL VTRM VP RCV OE SUS MAX3349E TOP VIEW *EP + UCSP (2mm x 2mm) MAX3349E TOP VIEW (BUMPS ON BOTTOM OF DIE) A B C 1 23 RX TX VUART VP VL ENUM SUS VTRM BD VM RCV OE 4 D D+ D- VBUS GND *CONNECT TO GND OR LEAVE UNCONNECTED. + PART TEMP RANGE PIN-PACKAGE MAX3349EEBE-T -40°C to +85°C 16 UCSP MAX3349EEBE+T -40°C to +85°C 16 UCSP MAX3349EETE* -40°C to +85°C 16 TQFN-EP** Pin Configurations UCSP is a trademark of Maxim Integrated Products, Inc. * Future product—contact factory for availability. T = Tape and reel. + Denotes a lead(Pb)-free/RoHS-compliant package. ** EP = Exposed pad. Cell Phones PDAs Digital Cameras MP3 Players |
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