MAX3349E Просмотр технического описания (PDF) - Maxim Integrated
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MAX3349E Datasheet PDF : 16 Pages
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Hi-Speed USB 2.0 Full-Speed Transceiver
with UART Multiplexing Mode
ABSOLUTE MAXIMUM RATINGS
(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
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.
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)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SUPPLY INPUTS/OUTPUTS (VBUS, VUART, VTRM, VL)
VBUS Input Range
VBUS
USB mode
VL Input Range
VL
4.5V VBUS 5.5V
3.0V VBUS 4.5V
VUART Input Range
VUART
UART mode
Regulated Supply-Voltage Output
VTRM
Internal regulator,
USB mode
VBUS > 4.5V
VBUS < 4.5V
Operating VBUS Supply Current
IBUS
Full-speed transmitting/receiving at
12Mbps, CL = 50pF on D+ and D-
3.0
1.40
2.7
3.0
2.8
5.5
V
2.75
V
3.3
V
3.6
V
3.6
10
mA
Operating VUART Supply Current
Static VUART Supply Current
Operating VL Supply Current
IVUART
IVUART(STATIC)
IVL
UART transmitting/receiving at
921kbaud, CL = 200pF
UART mode
Full-speed transmitting/receiving at
12Mbps, CL = 50pF on D+ and D-
2.5
mA
3.5
5
µA
6
mA
Full-Speed Idle and SE0 Supply
Current
Static VL Supply Current
IVBUS(IDLE)
IVL(STATIC)
Full-speed idle,
VD+ > +2.7V, VD- < +0.3V
SE0: VD+ < +0.3V, VD- < +0.3V
Full-speed idle, SE0, suspend mode,
or static UART mode
290 400
µA
340 450
2
10
µA
Sharing Mode VL Supply Current
USB Suspend VBUS Supply
Current
IVL(OFF)
IVBUS(SUS)
VBUS and VUART not present
VM, VP unconnected;
OE = 1, SUS = 1
2
5
µA
38
65
µA
VBUS DETECTION (BD)
USB Power-Supply Detection
Threshold
VTH_VBUS
0.4 x
VL
0.9 x
VL
V
USB Power-Supply Detection
Hysteresis
VHYS_VBUS
40
mV
VL Power-Supply Detection
Threshold
VTH_VL
0.7
V
2 _______________________________________________________________________________________
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