
Maxim Integrated
General Description
The MAX3344E/MAX3345E USB transceivers convert logic-level signals to USB signals, and USB signals to logic-level signals. An internal 1.5kΩ USB pullup resistor supports full-speed (12Mbps) USB operation. The MAX3344E/MAX3345E provide built-in ±15kV ESD-protection circuitry on the USB I/O pins, D+ and D-, and VCC.
FEATUREs
♦ ±15kV ESD Protection On D+ and D-
♦ Comply with USB Specification 1.1 (Full Speed 2.0)
♦ Separate VP and VM Inputs/Outputs
♦ VL Down to 1.65V Allows Connection with LowVoltage ASICs
♦ Enumerate Input—Allows USB Connection
through Software
♦ USB Detect Function
3.6V (min) to 4V (max)—MAX3344E
1V (min) to 2.8V (max)—MAX3345E
♦ Allow Single-Ended or Differential Logic I/O
♦ Internal Linear Regulator Allows Direct Powering
from the USB
♦ Internal Pullup Resistor for Full-Speed Operation
♦ Three-State Outputs
♦ No Power-Supply Sequencing Required
♦ Driver Active in Suspend Mode
♦ Available in Miniature Chip-Scale Package
APPLICATIONs
Cell Phones
PC Peripherals
Information Appliances
Data Cradles
PDAs
MP3 Players
Digital Cameras