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 ..
MAX334CPE ,High Speed Quad SPST Analog SwitchFeatures
The MAX334 is a quad single-pole-single-ttvow, RdsiON) son (max.)
normally closed (S ..
MAX334CWE ,High Speed Quad SPST Analog SwitchELECTRICAL CHARACTERISTICS
(V’ = +15V, V" = -15V, Var, (Logic Level High) I 30V, VAL (Logic Leve ..
MAX334CWE ,High Speed Quad SPST Analog SwitchlVI/J X IIVI
High Speed Quad SPST Analog Switch
4__W
MAX334CWE+ ,Quad, SPST, High-Speed, Break-Before-Make Analog SwitchApplications MAX334C/D 000 to +7o°c Dice
Sample and Hold Circuits MAX334CJE 0°C to +70°C 16 Lead C ..
MAX334EPE ,High Speed Quad SPST Analog SwitchlVI/J X IIVI
High Speed Quad SPST Analog Switch
4__W
MAX701CSA ,Power-Supply Monitor with ResetFeatures
. Min 200ms RESET Pulse on Power-Up,
Power-Down, and During Low-Voltage Conditions
..
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 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,)
..
MAX701CSA+ ,Power-Supply Monitor with ResetFeatures● Min 200ms RESET Pulse on Power-Up, Power-The MAX700/MAX701/MAX702 are supervisory circuit ..
MAX701EPA ,Power-Supply Monitor with ResetApplications
Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical ..
MAX3349EEBE+T
USB 2.0 Full-Speed Transceiver with UART Multiplexing Mode
General DescriptionThe 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 1.5kΩpullup 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 1.5kΩPullup 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
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode19-3952; Rev 1; 5/11
Ordering Information
TQFN-EP
(4mm x 4mm)ENUM3411109
VTRM
VBUSD+D-GNDTXBD
RCV
SUS
UAR
MAX3349E
TOP VIEW
*EP
UCSP
(2mm x 2mm)MAX3349E
TOP VIEW
(BUMPS ON BOTTOM OF DIE)23TXVUARTVL
ENUMSUSVTRMRCVD+D-VBUSGND
*CONNECT TO GND OR LEAVE UNCONNECTED.
PARTTEMP RANGEPIN-PACKAGEMAX3349EEBE-T-40°C to +85°C16 UCSP
MAX3349EEBE+T-40°C to +85°C16 UCSP
MAX3349EETE*-40°C to +85°C16 TQFN-EP**
Pin Configurations*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
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
ABSOLUTE MAXIMUM RATINGSStresses 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)
UCSP (derate 8.2mW/°C above +70°C)....................659.5mW
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
Soldering Temperature (reflow).......................................+260°C
ELECTRICAL CHARACTERISTICS(VBUS= +3.0V 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 Range VBUS USB mode 3.0 5.5 V
4.5V VBUS 5.5VVL Input Range VL3.0V VBUS 4.5V1.40 2.75 V
VUART Input Range VUART UART mode 2.7 3.3 V
VBUS > 4.5V 3.0 3.6 Regulated Supply-Voltage Output VTRMInternal regulator,
USB mode VBUS < 4.5V 2.8 3.6
Operating VBUS Supply Current IBUSFull-speed transmitting/receiving at
12Mbps, CL= 50pF on D+ and D- 10 mA
Operating VUART Supply Current IVUARTUART transmitting/receiving at
921kbaud, CL = 200pF 2.5mA
Static VUART Supply Current IVUART(STATIC) UART mode 3.5 5 µA
Operating VL Supply Current IVLFull-speed transmitting/receiving at
12Mbps, CL= 50pF on D+ and D- 6 mA
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 2 10 µA
Sharing Mode VL Supply Current IVL(OFF) VBUS and VUART not present 2 5µA
USB Suspend VBUS Supply
Current IVBUS(SUS)VM, VP unconnected;
OE = 1, SUS = 1 38 65 µA
VBUS DETECTION (BD) USB Power-Supply Detection
Threshold VTH_VBUS0.4 x
0.9 x V
USB Power-Supply Detection
Hysteresis VHYS_VBUS 40 mV
VL Power-Supply Detection
Threshold VTH_VL 0.7 V
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
ELECTRICAL CHARACTERISTICS (continued)(VBUS= +3.0V 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
Threshold VTH_UART0.4 x
0.65 x
0.9 x V
DIGITAL INPUTS/OUTPUTS (VP, VM, RCV, SUS, OE, RX, TX, ENUM, BD)Input-Voltage Low VIL 0.3 x V
Input-Voltage High VIH0.7 x V
Output-Voltage Low VOLIOL = +2mA, VL > 1.65V
IOL = +1mA, VL < 1.65V 0.4 V
Output-Voltage High VOHIOH = +2mA, VL > 1.65V
IOH = +1mA, VL < 1.65V
VL -
0.4 V
Input Leakage Current ILKG -1 +1 µA
ANALOG INPUTS/OUTPUTS (D+, D- in USB Mode)Differential Input Sensitivity VID|VD+ - VD-| 0.2 V
Differential Common-Mode
VoltageVCMIncludes VIDrange 0.8 2.5 V
Single-Ended Input
Low Voltage VILSE 0.8 V
Single-Ended Input
High Voltage VIHSE 2.0 V
USB Output-Voltage Low VUSB_OLD RL = 1.5k connected to +3.6V 0.3 V
USB Output-Voltage High VUSB_OHD RL = 15k connected to GND 2.8 3.6 V
Off-State Leakage Current ILZ -1 +1 µA
Driver Output Impedance ZDRV Steady-state drive 28 43
Transceiver Capacitance CIND Measured from D+/D- to GND 20 pF
Input Impedance ZIN Driver off 1 M
D+ Internal Pullup Resistor RPU ENUM = 1 1425 1500 1575
ANALOG INPUTS/OUTPUTS (D+, D- in UART Mode) Input-Voltage High VUART_IH UART mode, +2.70 < VUART < +2.85V 2.0 V
Input-Voltage LowVUART_IL UART mode,
+2.70V < VUART < +2.85V 0.8 V
Output-Voltage High VUART_OH
UART mode,
+2.70V < VUART < +2.85V
IUART_OH = -2mA
2.2 V
Output-Voltage Low VUART_OL
UART mode,
+2.70V < VUART < +2.85V
IUART_OL = +2mA 0.4 V
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
ELECTRICAL CHARACTERISTICS (continued)(VBUS= +3.0V 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) ±15 kV
IEC 61000-4-2
Air-Gap Discharge ±8 kV
IEC 61000-4-2
Contact Discharge ±8 kV
TIMING CHARACTERISTICS(VBUS= +3.0V 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
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
TIMING CHARACTERISTICS (continued)(VBUS= +3.0V 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)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSHigh-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.
MAX3349E
Hi-Speed 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
MAX3349E toc01
VL (V)
PROPAGATION DELAY (ns)
TA = +85°C
TA = +25°C
TA = -40°C
SINGLE-ENDED RECEIVER
PROPAGATION DELAY vs. VBUS
MAX3349E toc02
VBUS (V)
PROPAGATION DELAY (ns)
TA = +85°C
TA = +25°C
TA = -40°C
LOGIC CURRENT CONSUMPTION
IN SUSPEND MODE
MAX3349E toc03
VL (V)
IVL
VBUS CURRENT CONSUMPTION
IN SUSPEND MODE
MAX3349E toc04
VBUS (V)
IVCC
VL CURRENT DURING USB OPERATION
vs. D+/D- CAPACITANCE
MAX3349E toc05
D+/D- CAPACITANCE (CL)
(mA)
12Mbps DATA RATE
TRANSMITTING
VBUS CURRENT DURING USB OPERATION
vs. D+/D- CAPACITANCE
MAX3349E toc06
D+/D- CAPACITANCE (CL)
IVBUS
(mA)
12Mbps DATA RATE
TRANSMITTING
10ns/div
SUSPEND MODERCV
2V/div
SUS
2V/div
MAX3349E toc07
4µs/div
BUS DETECT RESPONSE1V/div
VBUS
2V/div
MAX3349E toc08
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
Pin Description
PIN
UCSPTQFNTYPENAMEFUNCTION A1 1 POWER VUART
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.
A2 2 OUTPUT RX UART Receive Output. In UART mode, RX is a level-shifted output that expresses
the logic state of D+.
A3 3 INPUT TX UART Transmit Input. In UART mode, D- follows the logic state on TX.
A4 4 OUTPUT BD
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.
B1 15 POWER VLDigital Logic Supply. Connect a +1.4V to +2.75V supply to VL. Bypass VL to GND
with a 0.1µF or larger ceramic capacitor.
B2 16 I/O VM
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).
B3 5 I/O VP
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).
B4 6 OUTPUT RCV Differential Receiver Output. In USB mode, RCV is the output of the USB
differential receiver (Table 3).
C1 14 POWER VTRM
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.
C2 13 INPUT ENUM
Enumerate Input. Drive ENUM to VL to connect the internal 1.5k resistor from D+
to VTRM (when VBUS is present). Drive ENUM to GND to disconnect the internal
1.5k pullup resistor. ENUM has no effect when the device is in UART mode.
C3 8 INPUT SUS Suspend Input. Drive SUS low for normal operation. Drive SUS high to force the
MAX3349E into suspend mode.
C4 7 INPUT OE
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.
D1 12 POWER VBUSUSB Supply Voltage. VBUS provides power to the internal linear regulator when in
USB mode. Bypass VBUS to GND with a 0.1µF ceramic capacitor.
D2 11 I/O D+ USB Differential Data Input/Output. Connect D+ directly to the USB connector.
D3 10 I/O D- USB Differential Data Input/Output. Connect D- directly to the USB connector.
D4 9 POWER GND Ground EP — EP Exposed Pad. Connect exposed paddle to GND.
MAX3349E
Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode90%
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
