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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX4906EF Datasheet

High-/Full-Speed USB 2.0 Switches

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19-0613; Rev 2; 3/09
High-/Full-Speed USB 2.0 Switches
with High ESD
General Description
The MAX4906EF are electrostatic discharge (ESD)-pro-
tected analog switches that combine low on-capacitance
(CON) and low on-resistance (RON) necessary for high-
performance switching applications. The COM_ inputs
are protected against ±15kV ESD without latchup or dam-
age. The device is designed for USB 2.0 high-speed
applications at 480Mbps. The switches also handle all the
requirements for USB low- and full-speed signaling.
The MAX4906EF features two single-pole/double-throw
(SPDT) switches. The device is fully specified to operate
from a single +2.7V to +3.6V power supply and is protect-
ed against a +5.5V short to all analog inputs (COM_, NC_,
NO_). This feature makes the MAX4906EF fully compliant
with the USB 2.0 specification of +5.5V fault protection.
The device features a low threshold voltage and a +1.4V
VIH, permitting them to be used with low-voltage logic.
The device features a QP input that when driven high,
turns the charge pump off and sets the device in standby
mode. When the device is in standby mode, the quies-
cent supply current is reduced to 3µA (max) and the
switches remain operable.
The MAX4906EF is available in a space-saving, 2mm x
2mm µDFN package and operates over a -40°C to +85°C
temperature range.
Applications
USB Switching
Cell Phones
PDAs
Digital Still Cameras
GPS
Notebook Computers
Relay Replacements
Ethernet Switching
Video Switching
Bus Switches
T3/E3 Switches for
Redundancy Protection
Features
±15kV (Human Body Model) ESD Protection,
on COM_
Fully Specified for a Single +2.7V to +3.6V
Power-Supply Voltage
Low 4Ω (typ), 7Ω (max) On-Resistance (RON)
-3dB Bandwidth: 500MHz (typ)
Low Bit-to-Bit Skew ≤ 20ps
Charge-Pump Noise = 90µV (typ)
Charge-Pump Enable
No Need for Logic-Level Shifters for 1.4V or
Above
COM_ Analog Inputs Fault-Protected Against
Shorts to USB Supply Rail Up to +5.5V
Low Supply Current 3µA (max) in Standby
Space-Saving 10-Pin, 2mm x 2mm µDFN Package
Ordering Information
PART
TEMP RANGE
PIN-
TOP
PACKAGE MARK
MAX4906EFELB+T -40°C to +85°C 10 μDFN AAJ
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Characteristics
EYE DIAGRAM
V+ = 3.3V
IBIAS = 9mA
UI = 2.08ns
VNO1OUT
USB 2.0
HIGH SPEED
TRANSMIT
TEMPLATE
100mV/div
Pin Configuration
TOP VIEW
IN
QP
GND
COM1
COM2
+
1
2
3 MAX4906EF
4
5
10 V+
9 NC1
8 NC2
7 NO1
6 NO2
200ps/div
VNO2OUT
μDFN
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX4906EF Datasheet

High-/Full-Speed USB 2.0 Switches

No Preview Available !

High-/Full-Speed USB 2.0 Switches
with High ESD
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
V+ .............................................................................-0.3V to +4V
IN, QP (Note 1) .........................................................-0.3V to +4V
COM_, NO_, NC_ ..................................................-0.3V to +5.5V
Continuous Current (COM_ to NO_/NC_) ......................±120mA
Peak Current, (COM_ to NO_/NC_)
(pulsed at 1ms 10% duty cycle).................................±240mA
Continuous Power Dissipation (TA = +70°C)
10-Pin µDFN (derate 5.0mW/°C above +70°C) ...........403mW
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
Note 1: Signals on IN, QP exceeding GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.
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
(V+ = +2.7V to +3.6V, TA = TMIN to TMAX, charge-pump enabled, unless otherwise noted. Typical values are at V+= 3.3V, TA =
+25°C.) (Note 2)
PARAMETER
ANALOG SWITCH
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Analog Signal Range
VCOM_,VNO_, QP = GND or V+ (Note 3)
VNC_
0 3.6 V
Fault-Protection Trip Threshold
(Note 4)
On-Resistance, Charge-Pump
Enabled
On-Resistance, Charge-Pump
Disabled
On-Resistance Match Between
Channels
VFP 3.62 3.9 4.20
RON
RON
ΔRON
V+ = 2.7V,
ICOM_ = -10mA,
VCOM_ = 0V, 1.5V,
QP = GND
V+ = 2.7V,
ICOM_ = -10mA,
VCOM_ = 2.7V,
QP = GND
V+ = 3.0V,
ICOM_ = -10mA,
VCOM_ = 0V, 1.5V,
QP = V+
V+=2.7V,
ICOM_ = -10mA,
VCOM_ = 0V, 1.5V,
QP = V+
V+ = 2.7V,
ICOM_ = -10mA,
VCOM_ = 0V, 1.5V, 2.7V
(Note 5)
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
3.8 5
6
47
8
5 12
13
8 15
17
0.5 0.8
1.0
V
Ω
Ω
Ω
Ω
On-Resistance Flatness
V+ = 2.7V,
RFLAT(ON) ICOM_ = -10mA, VCOM_ = 0V, 1.5V
(Note 6)
0.5 Ω
2 _______________________________________________________________________________________


Part Number MAX4906EF
Description High-/Full-Speed USB 2.0 Switches
Maker Maxim Integrated Products
Total Page 13 Pages
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