MAX3349EA Просмотр технического описания (PDF) - Maxim Integrated
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MAX3349EA Datasheet PDF : 17 Pages
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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)
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
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 = +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
SUPPLY INPUTS/OUTPUTS (VBUS, VUART, VTRM, VL)
VBUS Input Range
VL Input Range
VBUS
VL
USB mode
VUART Input Range
VUART
UART mode
Regulated Supply-Voltage Output
VTRM
Internal regulator, USB mode
Operating VBUS Supply Current
IBUS
Full-speed transmitting/receiving at
12Mbps, CL = 50pF on D+ and D-
MIN TYP MAX UNITS
4.0
5.5
V
1.40
2.75
V
2.7
3.3
V
3.0
3.6
V
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
Sharing Mode VL Supply Current
USB Suspend VBUS Supply
Current
IVBUS(IDLE)
IVL(STATIC)
IVL(OFF)
IVBUS(SUS)
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
VBUS and VUART not present
VM, VP unconnected;
OE = 1, SUS = 1
290
400
µA
340
450
2
10
µA
2
5
µA
38
65
µA
VBUS DETECTION (BD)
USB Power-Supply Detection
Threshold
USB Power-Supply Detection
Hysteresis
VL Power-Supply Detection
Threshold
VTH_VBUS
VHYS_VBUS
VTH_VL
VL = +1.8V
VL = +2.5V
VL = +1.8V
VL = +2.5V
1.8
2.7
3.4
V
2.3
3.2
4.0
80
mV
100
0.7
V
2 _______________________________________________________________________________________
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