MAX3349EAEBE+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3349EAEBE+T ,USB 2.0 Full-Speed Transceiver with UART Multiplexing ModeApplicationsMAX3349EAETE** 16 TQFN-EP* T1644-4Cell PhonesNote: All devices specified for the -40°C ..
MAX3349EEBE+T ,USB 2.0 Full-Speed Transceiver with UART Multiplexing ModeApplications*Future product—contact factory for availability.T = Tape and reel.Cell Phones Digital ..
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MAX334CWE ,High Speed Quad SPST Analog SwitchlVI/J X IIVI High Speed Quad SPST Analog Switch 4__W
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MAX701CPA+ ,Power-Supply Monitor with Resetfeatures of the MAX701 and MAX702, MAX700ESA -40°C to +85°C 8 Narrow SOthe MAX700 provides preset o ..
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MAX701CSA ,Power-Supply Monitor with ResetGeneral Description The MAX700/701/702 are supervisory circuits used to monitor the power suppl ..
MAX701CSA ,Power-Supply Monitor with ResetELECTRICAL CHARACTERISTICS (TA = 250, Vcc = +5V, CTL = GND on MAX700, unless otherwise noted,) ..

MAX3349EAEBE+T
USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode
General Description
The MAX3349EA ±15kV ESD-protected, USB transceiv-
er provides a full-speed USB interface to a lower voltage
microprocessor or ASIC. The device supports enumera-
tion, 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 connec-
tor 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 MAX3349EA features a separate UART voltage sup-
ply input to support legacy devices using +2.75V signal-
ing. The MAX3349EA supports a maximum UART baud
rate of 921kbaud.
Upon connection to a USB host, the MAX3349EA enters
USB mode and provides a full-speed USB 2.0 compliant
interface through VP, VM, RCV, and OE. The
MAX3349EA features internal series termination resistors
on D+ and D-, and an internal 1.5kΩpullup resistor to
D+ to allow the device to logically connect and discon-
nect from the USB while plugged in. A suspend mode is
provided for low-power operation. D+ and D- are pro-
tected from electrostatic discharge (ESD) up to ±15kV.
The MAX3349EA 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
Cell Phones
PDAs
Digital Cameras
MP3 Players
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 1.5kΩPullup Resistor on D+ Controlled
by Enumerate InputInternal Series Termination Resistors on D+ and D-Complies with USB Specification Revision 2.0,
Full-Speed 12Mbps OperationBuilt-In Level Shifting Down to +1.4V, Ensuring
Compatibility with Low-Voltage ASICsVBUSDetectionCombined VP and VM Inputs/OutputsNo Power-Supply Sequencing RequiredAvailable in 16-Bump UCSP (2mm x 2mm)
Package
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
19-0667; Rev 0; 10/06
Ordering Information
TQFN-EP (4mm x 4mm)
ENUM3411109
VTRM
VBUSD-GND
RCV
SUS
VUAR
MAX3349EA
TOP VIEW
*EP
UCSP (2mm x 2mm)
(BUMPS ON BOTTOM OF DIE)
MAX3349EA
TOP VIEW23TXVUARTVL
ENUMSUSVTRMRCVD+D-VBUSGND
*EXPOSED PADDLE—CONNECT TO GND OR LEAVE UNCONNECTED.
+ DENOTES LEAD-FREE PACKAGE.
PARTPIN-PACKAGEPKG CODE
MAX3349EAEBE+T16 UCSPB16-1
MAX3349EAETE**16 TQFN-EP*T1644-4
Pin Configurations
UCSP is a trademark of Maxim Integrated Products, Inc.
Note:All devices specified for the -40°C to +85°C extended
temperature range.
**Future product—contact factory for availability.
*EP = Exposed paddle.
+Indicates lead-free package.
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
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)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SUPPLY INPUTS/OUTPUTS (VBUS, VUART, VTRM, VL)
VBUS Input RangeVBUSUSB mode4.05.5V
VL Input RangeVL1.402.75V
VUART Input RangeVUARTUART mode2.73.3V
Regulated Supply-Voltage OutputVTRMInternal regulator, USB mode3.03.6V
Operating VBUS Supply CurrentIBUSFull-speed transmitting/receiving at
12Mbps, CL = 50pF on D+ and D-10mA
Operating VUART Supply CurrentIVUARTUART transmitting/receiving at
921kbaud, CL = 200pF2.5mA
Static VUART Supply CurrentIVUART(STATIC)UART mode3.55µA
Operating VL Supply CurrentIVLFull-speed transmitting/receiving at
12Mbps, CL = 50pF on D+ and D-6mA
Full-speed idle,
VD+ > +2.7V, VD- < +0.3V290400Full-Speed Idle and SE0 Supply
CurrentIVBUS(IDLE)
SE0: VD+ < +0.3V, VD- < +0.3V340450
Static VL Supply CurrentIVL(STATIC)Full-speed idle, SE0, suspend mode, or
static UART mode210µA
Sharing Mode VL Supply CurrentIVL(OFF)VBUS and VUART not present25µA
USB Suspend VBUS Supply
CurrentIVBUS(SUS)VM, VP unconnected;
OE = 1, SUS = 13865µA
VBUS DETECTION (BD)
VL = +1.8V1.82.73.4USB Power-Supply Detection
ThresholdVTH_VBUSVL = +2.5V2.33.24.0V
VL = +1.8V80USB Power-Supply Detection
HysteresisVHYS_VBUSVL = +2.5V100mV
VL Power-Supply Detection
ThresholdVTH_VL0.7V
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
ELECTRICAL CHARACTERISTICS (continued)
(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)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
VUART Power-Supply Detection
ThresholdVTH_UART0.4 x
0.65 x
0.9 xV
DIGITAL INPUTS/OUTPUTS (VP, VM, RCV, SUS, OE, RX, TX, ENUM, BD)
Input Voltage LowVIL0.3 xV
Input Voltage HighVIH0.7 xV
Output Voltage LowVOLIOL = +2mA, VL > 1.65V
IOL = +1mA, VL < 1.65V0.4V
Output Voltage HighVOHIOH = +2mA, VL > 1.65V
IOH = +1mA, VL < 1.65V
VL -
0.4V
Input Leakage CurrentILKG-1+1µA
ANALOG INPUTS/OUTPUTS (D+, D- in USB Mode)
Differential Input SensitivityVID|VD+ - VD-|0.2V
Differential Common-Mode
VoltageVCMIncludes VID range0.82.5V
Single-Ended Input
Low VoltageVILSE0.8V
Single-Ended Input
High VoltageVIHSE2.0V
USB Output Voltage LowVUSB_OLDRL = 1.5kΩ connected to +3.6V0.3V
USB Output Voltage HighVUSB_OHDRL = 15kΩ connected to GND2.83.6V
Off-State Leakage CurrentILZ-10+10µA
Driver Output ImpedanceZDRVSteady-state drive29.03843.5Ω
Transceiver CapacitanceCINDMeasured from D+/D- to GND20pF
Input ImpedanceZINDriver off0.91.32.0MΩ
D+ Internal Pullup ResistorRPUENUM = 1142515001575Ω
ANALOG INPUTS/OUTPUTS (D+, D- in UART Mode)
Input Voltage HighVUART_IHUART mode, +2.70 < VUART < +2.85V2.0V
Input Voltage LowVUART_IL UART mode,
+2.70V < VUART < +2.85V0.8V
Output Voltage HighVUART_OH
UART mode,
+2.70V < VUART < +2.85V
IUART_OH = -2mA
2.2V
Output Voltage LowVUART_OL
UART mode,
+2.70V < VUART < +2.85V
IUART_OL = +2mA
0.4V
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
ELECTRICAL CHARACTERISTICS (continued)
(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)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ESD PROTECTION (D+, D-)
Human Body Model(Figures 9 and 10)±15kV
IEC 61000-4-2
Air-Gap Discharge±8kV
IEC 61000-4-2
Contact Discharge±8kV
TIMING CHARACTERISTICS
(VBUS= +4.0V to +5.5V, VUART= +2.7V to +3.3V, VL= +1.4V to +2.75V, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VBUS= +5V, VL= +1.8V, VUART= +2.75V (UART Mode), and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
USB DRIVER CHARACTERISTICS (CL = 50pF)
Rise TimetFR10% to 90% of | VUSB_OHD - VUSB_OLD |
(Figures 1 and 7)420ns
Fall TimetFF90% to 10% of | VUSB_OHD - VUSB_OLD |
(Figures 1 and 7)420ns
Rise/Fall Time MatchingtFR/tFFExcluding the first transition from idle
state (Note 2) (Figures 1 and 7)90110%
Output Signal Crossover VoltageVCRS_FExcluding the first transition from idle
state (Note 2) (Figure 2)1.32.0V
VL > +1.65V (Figures 2 and 7)22.5tPLH_DRV+1.4V < VL < +1.65V (Figures 2 and 7)25
VL > +1.65V (Figures 2 and 7)22.5Driver Propagation Delay
tPHL_DRV+1.4V < VL < +1.65V (Figures 2 and 7)25
tPHZ_DRVHigh-to-off transition (Figures 3 and 6)25Driver Disable DelaytPLZ_DRVLow-to-off transition (Figures 3 and 6)25ns
tPZH_DRVOff-to-high transition (Figures 3 and 7)25Driver Enable DelaytPZL_DRVOff-to-low transition (Figures 3 and 7)25ns
USB RECEIVER CHARACTERISTICS (CL = 15pF)
VL > +1.65V (Figures 4 and 8)25tPLH_RCV+1.4V < VL < +1.65V (Figures 4 and 8)30
VL > +1.65V (Figures 4 and 8)25
Differential Receiver Propagation
Delay
tPHL_RCV1.4V < VL < +1.65V (Figures 4 and 8)30
VL > +1.65V (Figures 4 and 8)28tPLH_SE+1.4V < VL < +1.65V (Figures 4 and 8)35
VL > +1.65V (Figures 4 and 8)28
Single-Ended Receiver
Propagation Delay
tPHL_SE+1.4V < VL < +1.65V (Figures 4 and 8)35
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
TIMING CHARACTERISTICS (continued)
(VBUS= +4.0V to +5.5V, VUART= +2.7V to +3.3V, VL= +1.4V to +2.75V, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VBUS= +5V, VL= +1.8V, VUART= +2.75V (UART Mode), and TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
High-to-off transition,
VL > +1.65V (Figure 5)10
tPHZ_SE
High-to-off transition,
+1.4V < VL < +1.65V (Figure 5)12
Low-to-off transition,
VL > +1.65V (Figure 5)10
Single-Ended Receiver Disable
Delay
tPLZ_SE
Low-to-off transition,
+1.4V < VL < +1.65V (Figure 5)12
Off-to-high transition,
VL > +1.65V (Figure 5)20
tPZH_SE
Off-to-high transition,
+1.4V < VL < +1.65 (Figure 5)20
Off-to-low transition,
VL > +1.65V (Figure 5)20
Single-Ended Receiver Enable
Delay
tPZL_SE
Off-to-low transition,
+1.4V < VL < +1.65V (Figure 5)20
UART DRIVER CHARACTERISTICS (CL = 200pF)
Rise Time (D-)tFR_TUART10% to 90% of |VOHD - VOLD| (Figure 13)60200ns
Fall Time (D-)tFF_TUART90% to 10% of |VOHD - VOLD| (Figure 13)60200ns
tPLH_TUART(Figure 13)70200Driver Propagation DelaytPHL_TUART(Figure 13)70200ns
UART RECEIVER CHARACTERISTICS (CL = 15pF)
tPLH_RUART(Figure 14)60Receiver (Rx) Propagation DelaytPHL_RUART(Figure 14)60ns
tFR_RUART(Figure 14)45Receiver (Rx) Rise/Fall TimetFF_RUART(Figure 14)45ns
Note 1:Parameters are 100% production tested at TA=+25°C, unless otherwise noted. Limits over temperature are guaranteed
by design.
Note 2:Guaranteed by design, not production tested.
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
Typical Operating Characteristics
(VBUS= +5V, VL= +3.3V, VUART= +2.75V, TA= +25°C, unless otherwise noted.)
SINGLE-ENDED RECEIVER
PROPAGATION DELAY vs. VL
MAX3349EA toc01
VL (V)
PROPAGATION DELAY (ns)
TA = +85°C
TA = +25°C
TA = -40°C
SINGLE-ENDED RECEIVER
PROPAGATION DELAY vs. VBUS
MAX3349EA toc02
VBUS (V)
PROPAGATION DELAY (ns)
TA = +85°C
TA = +25°C
TA = -40°C
LOGIC CURRENT CONSUMPTION
IN SUSPEND MODE
MAX3349EA toc03
VL (V)
IVL
VBUS CURRENT CONSUMPTION
IN SUSPEND MODE
MAX3349EA toc04
VBUS (V)
IVCC
VL CURRENT DURING USB OPERATION
vs. D+/D- CAPACITANCE
MAX3349EA toc05
D+/D- CAPACITANCE (CL)
IVL
(mA)
12Mbps DATA RATE
TRANSMITTING
VBUS CURRENT DURING USB OPERATION
vs. D+/D- CAPACITANCE
MAX3349EA toc06
D+/D- CAPACITANCE (CL)
IVBUS
(mA)
12Mbps DATA RATE
TRANSMITTING
10ns/div
SUSPEND MODE
RCV
2V/div
SUS
2V/div
MAX3349EA toc07
4μs/div
BUS DETECT RESPONSE
1V/div
VBUS
2V/div
MAX3349EA toc08
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
Pin Description
PIN
UCSPTQFNTYPENAMEFUNCTION1POWERVUART
UART Supply Voltage. VUART powers the internal UART transmitter and receiver.
Connect a regulated voltage between +2.7V and +3.3V to VUART. Bypass VUART to
GND with a 0.1µF ceramic capacitor.2OUTPUTRXUART Receive Output. In UART mode, RX is a level-shifted output that expresses
the logic state of D+.3INPUTTXUART Transmit Input. In UART mode, D- follows the logic state on TX.4OUTPUTBD
USB Detect Output. When VBUS exceeds the VTH-BUS threshold, BD is logic-high to
indicate that the MAX3349E is connected to a USB host. The MAX3349E operates in
USB mode when BD is logic-high, and operates in UART mode when BD is logic-
low.15POWERVLDigital Logic Supply. Connect a +1.4V to +2.75V supply to VL. Bypass VL to GND
with a 0.1µF or larger ceramic capacitor.16I/OVM
Receiver Output/Driver Input. VM functions as a receiver output when OE = VL. VM
follows the logic state of D- when receiving. VM functions as a driver input when OE
= GND (Tables 2 and 3).5I/OVP
Receiver Output/Driver Input. VP functions as a receiver output when OE = VL. VP
follows the logic state of D+ when receiving. VP functions as a driver input when OE
= GND (Tables 2 and 3).6OUTPUTRCVDifferential Receiver Output. In USB mode, RCV is the output of the USB differential
receiver (Table 3).14POWERVTRM
Internal Regulator Output. VTRM provides a regulated +3.3V output. Bypass VTRM to
GND with a 1µF ceramic capacitor. VTRM draws power from VBUS. Do not power
external circuitry from VTRM.13INPUTENUM
Enumerate Input. Drive ENUM to VL to connect the internal 1.5kΩ resistor from D+ to
VTRM (when VBUS is present). Drive ENUM to GND to disconnect the internal 1.5kΩ
pullup resistor. ENUM has no effect when the device is in UART mode.8INPUTSUSSuspend Input. Drive SUS low for normal operation. Drive SUS high to force the
MAX3349E into suspend mode.7INPUTOE
Output Enable. Drive OE low to set VP/VM to transmitter inputs in USB mode. Drive
OE high to set VP/VM to receiver outputs in USB mode. OE has no effect when the
device is in UART mode.12POWERVBUSUSB Supply Voltage. VBUS provides power to the internal linear regulator when in
USB mode. Bypass VBUS to GND with a 0.1µF ceramic capacitor.11I/OD+USB Differential Data Input/Output. Connect D+ directly to the USB connector.10I/OD-USB Differential Data Input/Output. Connect D- directly to the USB connector.9POWERGNDGround
—EP—EPExposed Paddle. Connect exposed paddle to GND.
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
90%
10%
90%
10%
tFR, tFR_TUARTtFF, tFF_TUART
VUSB_OLD, VOLD
VUSB_OHD, VOHD
Figure 1. Rise and Fall Times
tPLH_DRVtPHL_DRV
VCRS_F
VP AND VM RISE/FALL TIMES < 4ns
Figure 2. Timing of VP and VM to D+ and D-
D+/D-
tPLZ_DRVtPZL_DRV
tPHZ_DRVtPZH_DRV
VP/VM CONNECTED TO GND,
D+/D- CONNECTED
TO PULLUP
VP/VM CONNECTED TO VL,
D+/D- CONNECTED
TO PULLDOWN
D+/D-
Figure 3. Driver Enable and Disable Timing
+3V
RCV, VM, AND VP
D+/D-
tPLH_RCV,
tPLH_SE
tPHL_RCV,
tPHL_SE
INPUT RISE/FALL TIME < 4ns
Figure 4. D+/D- Timing to VP, VM, and RCV
Timing Diagrams
MAX3349EA
USB 2.0 Full-Speed Transceiver with UART
Multiplexing Mode
Detailed Description
The MAX3349EA ±15kV ESD-protected, USB transceiver
provides a full-speed USB interface to a microprocessor or
ASIC. The device supports enumeration, suspend, and
VBUSdetection. 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.
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
MAX3349EA features a separate UART voltage supply
input. The MAX3349EA supports a maximum UART
baud rate of 921kbaud.
Upon connection to a USB host, the MAX3349EA
enters USB mode and provides a full-speed USB 2.0
compliant interface through VP, VM, RCV, and OE. The
MAX3349EA features internal series resistors on D+
and D-, and an internal 1.5kΩpullup resistor to D+ to
allow the device to logically connect and disconnect
from the USB bus while plugged in. A suspend mode is
provided for low-power operation. D+ and D- are pro-
tected from electrostatic discharge (ESD) up to ±15kV.
To ensure full ±15kV ESD protection, bypass VBUSto
VP/VM
VP/VM
tPLZ_SEtPZL_SE
tPHZ_SEtPZH_SE
D+/D- CONNECTED TO GND,
VP/VM CONNECTED
TO PULLUP
D+/D- CONNECTED TO +3V,
VP/VM CONNECTED
TO PULLDOWN
Figure 5. Receiver Enable and Disable Timing
MAX3349EA
1. ENABLE TIME (D+/D-)
MEASUREMENT
D+/D-
TEST
POINT
50pF15kΩ
2. VP/VM TO D+/D-
PROPAGATION DELAY
3. D+/D- RISE/FALL TIMES
Figure 7. Test Circuit for Enable Time, Transmitter Propagation
Delay, and Transmitter Rise/Fall Time
MAX3349EA
TEST
POINT
15pF
RCV/VP/VM
1. D+/D- TO RCV/VM/VP
PROPAGATION DELAYS
Figure 8. Test Circuit for Receiver Propagation Delay
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
100pF
1MΩ
RD
1.5kΩ
HIGH-
VOLTAGE
SOURCE
DEVICE
UNDER
TEST
Figure 9. Human Body ESD Test Model
Timing Diagrams (continued)
MAX3349EA1. DISABLE TIME (D+/D-)
MEASUREMENT
V = 0 FOR tPHZ
V = VTRM FOR tPLZ
D+/D-
TEST
POINT
50pF
220Ω
Figure 6. Test Circuit for Disable Time

Partno	Mfg	Dc	Qty	Available	Descript
MAX3349EAEBE+T \|MAX3349EAEBET	MAXIM	N/a	2500	avai	USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode