Features: `±15kV ESD Protection on D+ and D-
`Internal Linear Regulator Allows Direct Powering from the USB Cable
`Internal 1.5k Pullup Resistor for Low/Full-Speed Operation
`Supports Low-Speed and Full-Speed USB Communications
`Complies with USB Specification Revision 1.1 and 2.0 (Low Speed and Full Speed)
`Three-State Outputs
`Enumerate Input-Allows USB Connection through Software
`No Power-Supply Sequencing Required
`Operates with VL of 1.65V to 3.6V, Ensuring Compatibility with Low-Voltage ASICs
`Available in Miniature Chip-Scale PackageApplication·Cell Phones
·PC Peripherals
·Data Cradles
·PDAs
·MP3 PlayersPinout
Specifications(All voltages referenced to GND, unless otherwise noted.)
Supply Voltage (VCC) ...............................................-0.3V to +6V
Output of Internal Regulator (VTRM) ...........-0.3V to (VCC + 0.3V)
Input Voltage (D+, D-) ..............................................-0.3V to +6V
System Supply Voltage (VL) ......................................-0.3V to +6V
RCV, SUSP, VM, VP, MODE,
OE, SPEED, ENUM ...........................................-0.3V to (VL + 0.3V)
Short-Circuit Current (D+, D-)
to VCC or GND (Note 1) ...............................................Continuous
Maximum Continuous Current (all other pins) ....................±15mA
Continuous Power Dissipation (TA = +70°C)
4 x 4 UCSP (derate 7.4mW/°C above +70°C)......589mW [B16-2]
14-Pin TSSOP (derate 9.1mW/°C above +70°C)..727mW [U14-1]
Operating Temperature Range ............................-40°C to +85°C
Junction Temperature.........................................................+150°C
Storage Temperature Range ...................... .......-65°C to +150°C
Lead Temperature (soldering, 10s) ....................................+300°C
Bump Temperature (soldering) Reflow................................+235°C
Note 1: External 23.7 resistors connected to D+ and D-.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MAX3346E bidirectional transceiver converts logiclevel signals to USB signals, and USB signals to logiclevel signals. The MAX3346E includes the 1.5k USB pullup resistor internally, and supports both full-speed (12Mbps) and low-speed (1.5Mbps) USB operation. The device has built-in ±15kV ESD protection circuitry to guard the USB I/O pins, D+ and D-.
The MAX3346E operates with VL voltages as low as 1.65V, ensuring compatibility with low-voltage ASICs. The device features a logic-selectable suspend mode that lowers current draw to less than 40A. The MAX3346E has an enumerate function that allows devices to logically disconnect while plugged in. The MAX3346E is fully compliant with USB specification 1.1, and the full-speed and low-speed operation under USB specification 2.0.
The MAX3346E is available in the miniature 4 x 4 chipscale package (UCSPTM), as well as the small 14-pin TSSOP, and is rated for the -40°C to +85°C extended temperature range.
MAX3346E Data Sheet
