MAX3349EA datasheet(2/17 Pages) MAXIM

Part #	MAX3349EA

Description	USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode

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Manufacturer	MAXIM [Maxim Integrated Products]

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USB 2.0 Full-Speed Transceiver with UART

Multiplexing Mode

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

(All voltages referenced to GND, unless otherwise noted.)

VUART, VL, VBUS, D+, D- ..........................................-0.3V to +6V

VTRM .........................................................-0.3V to (VBUS + 0.3V)

VP, VM, SUS, RX, TX, ENUM, RCV, OE, BD, -0.3V to (VL + 0.3V)

Short Circuit Current (D+ and D-)...................................±150mA

Maximum Continuous Current (all other pins) .................±15mA

Continuous Power Dissipation (TA = +70°C)

16-Bump UCSP (derate 8.2mW/°C above +70°C) ....659.5mW

16-Pin 4mm x 4mm TQFN (derate 25.0mW/°C

above +70°C).............................................................2000mW

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

ELECTRICAL CHARACTERISTICS

(VBUS = +4.0V to +5.5V, VUART = +2.7V to +3.3V, VL = +1.40V to +2.75V, TA = -40°C to +85°C, unless otherwise noted. Typical val-

ues are at VBUS = +5V, VL = +1.8V, VUART = +2.75V (UART Mode), and TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY INPUTS/OUTPUTS (VBUS, VUART, VTRM, VL)

VBUS Input Range

VBUS

USB mode

4.0

5.5

V

VL Input Range

VL

1.40

2.75

V

VUART Input Range

VUART

UART mode

2.7

3.3

V

Regulated Supply-Voltage Output

VTRM

Internal regulator, USB mode

3.0

3.6

V

Operating VBUS Supply Current

IBUS

Full-speed transmitting/receiving at

12Mbps, CL = 50pF on D+ and D-

10

mA

Operating VUART Supply Current

IVUART

UART transmitting/receiving at

921kbaud, CL = 200pF

2.5

mA

Static VUART Supply Current

IVUART(STATIC)

UART mode

3.5

5

µA

Operating VL Supply Current

IVL

Full-speed transmitting/receiving at

12Mbps, CL = 50pF on D+ and D-

6mA

Full-speed idle,

VD+ > +2.7V, VD- < +0.3V

290

400

Full-Speed Idle and SE0 Supply

Current

IVBUS(IDLE)

SE0: VD+ < +0.3V, VD- < +0.3V

340

450

µA

Static VL Supply Current

IVL(STATIC)

Full-speed idle, SE0, suspend mode, or

static UART mode

210

µA

Sharing Mode VL Supply Current

IVL(OFF)

VBUS and VUART not present

2

5

µA

USB Suspend VBUS Supply

Current

IVBUS(SUS)

VM, VP unconnected;

OE = 1, SUS = 1

38

65

µA

VBUS DETECTION (BD)

VL = +1.8V

1.8

2.7

3.4

USB Power-Supply Detection

Threshold

VTH_VBUS

VL = +2.5V

2.3

3.2

4.0

V

VL = +1.8V

80

USB Power-Supply Detection

Hysteresis

VHYS_VBUS

VL = +2.5V

100

mV

VL Power-Supply Detection

Threshold

VTH_VL

0.7

V

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