MAX4999ETJ+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX4999ETJ+ ,USB 2.0 Hi-Speed Differential 8:1 MultiplexerApplicationsKeyboard, Video, Mouse (KVM) PART TEMP RANGE PIN-PACKAGEServers/RAID MAX4999ETJ+ -40°C ..
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MAX4999ETJ+
USB 2.0 Hi-Speed Differential 8:1 Multiplexer
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
General Description
The MAX4999 differential Hi-Speed USB analog multi-
plexer features low on-capacitance (CON) switching,
making it an ideal solution for the USB server/mass
storage market. The MAX4999 is designed for USB 2.0
low-/full-/Hi-Speed applications with capability of sup-
porting data rates up to 480Mbps.
The MAX4999 is a differential 8:1 multiplexer. The
MAX4999 features three digital inputs to control the sig-
nal path. Typical applications include switching a USB
connector between eight USB hosts and a USB device.
An enable input (EN) is provided to disable all channels
and place the device into a high-impedance state
(standby mode), shutting off the charge pump for mini-
mum power consumption.
The MAX4999 operates from a +3.0V to +3.6V power-
supply voltage and is specified over the -40°C to +85°C
extended temperature range. The MAX4999 is available
in a 5mm x 5mm, 32-pin TQFN package.
Applications
Keyboard, Video, Mouse (KVM)
Servers/RAID
Mass Storage
Workstations
Benefits and FeaturesIncreased Flexibility and PerformanceMultiplexer Supports USB 2.0 Standard-3dB Bandwidth: 1200MHz (typ)Low On-Resistance and Power Management
Features Minimize System Losses6.5Ω(typ) On-Resistance (RON)Single +3.0V to +3.6V Power-Supply VoltageEnable Input Puts All Channels in High-Impedance
State (Standby Mode)Low Operating Current (1µA) and Ultra-Low
Quiescent Current (30nA) in Standby ModeReduce Component Count and Design ComplexityLow Threshold Eliminates the Need for Translators
in 1.8V Low-Voltage SystemsSaves Board Space32-Pin, 5mm x 5mm, TQFN Package
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX4999ETJ+-40°C to +85°C32 TQFN-EP*
Pin Configuration
MAX4999
TQFN
5mm x 5mm
TOP VIEW
COM0COM1C1
GND
D4_0GNDV
GNDD3_1D3_0
D6_1672422201918
D6_0
GND
GND
D1_1
D1_0
GND
D4_110D7_1D0_19D7_0D0_0
GND15D2_0D5_016D2_1
GND
D5_1
*CONNECT EXPOSED PAD TO GND.
*EP
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Absolute Maximum Ratings
Package Thermal Characteristics (Note 2)
Electrical Characteristics
(VCC = +3.0V to +3.6V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.) (Note 3)
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.)
VCC...........................................................................-0.3V to +4V
All Other Pins (Note 1)..............................................-0.3V to +4V
Continuous Current (COM_to any switch).......................±60mA
Peak Current (COM_ to any switch) (pulsed at 1ms,
10% duty cycle)..........................................................±120mA
Continuous Power Dissipation (TA= +70°C)
32-Lead TQFN (derate 34.5mW/°C above +70°C)....2759mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
TQFN
Junction-to-Ambient Thermal Resistance (θJA)............29°C/W
Junction-to-Case Thermal Resistance (θJC) ...............2.0°C/W
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLY
Supply VoltageVCC3.03.6V
Charge pump on5Quiescent Supply CurrentIOCharge pump off1µA
ANALOG SWITCH
On-ResistanceRONICOM_ = ±10mA6.512Ω
On-Resistance MatchΔRONSCVCOM_ = 1V, TA = +25°C0.8Ω
On-Resistance Match Between
ChannelsΔRONBCVCOM_ = 1V, TA = +25°C1Ω
Leakage Current COM_, D_ _0,
D_ _1ILVCC = +3.6V-1+1µA
SWITCH AC PERFORMANCE (Note 4)
CrosstalkVDCT1Any switch to non-paired switch at 500MHz
(Figure 3)-30dB
Off-IsolationVOFFAny switch to non-paired switch at 240MHz
(Figure 3)-27dB
Bandwidth -3dBBWRL = 45Ω unbalanced (Figure 3)1200MHz
f = 1MHz6On-CapacitanceCONTaken from S11 parameters at f = 240MHz3.0pF
f = 1MHz, COM_5Off-CapacitanceCOFFTaken from S11 parameters at f = 240MHz3.0pF
Propagation DelaytPDRL = RS = 50Ω (Figure 2)300ps
Turn-On TimetONVD_ _0 or VD_ _1 = +1.5V, RL = 300Ω,10µs
Note 1:Signals exceeding GND are clamped by internal diodes. Limit forward-diode current to maximum current rating.
Note 2:Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a
four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Note 3:All units are 100% production tested at TA= +85°C. Limits over the operating temperature range are guaranteed by design
and not production tested.
Note 4:Guaranteed by design.
Electrical Characteristics (continued)
(VCC = +3.0V to +3.6V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.3V and TA= +25°C.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Turn-Off TimetOFFVD_ _0 or VD_ _1 = +1.5V, RL = 300Ω, CL =
35pF, VIH = VCC, VIL = 0V (Figure 1)10µs
Output Skew Same PorttPD
Skew between any D_ _0, D_ _1 line, same
port 45Ω unbalanced I/O, f = 240MHz
(Figure 2)ps
SWITCH LOGIC
Input Logic LowVILVCC = +3.0V0.6V
Input Logic HighVIHVCC = +3.6V1.7V
Input Logic HysteresisVHYST200mV
Input Leakage CurrentILEAKVCC = +3.6V, VCOM_ = 0V or VCC-1+1µA
ESD PROTECTION
All PinsHuman Body Model±2kV
Test Circuits/Timing Diagrams
tR < 5ns
tF < 5ns
50%
VIL
LOGIC
INPUT
COM_
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VIN ( RL ) RL + RON
VIN
VIH
tOFF
D_ _0
OR D_ _1
0.9 x V0UT0.9 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
VOUT
MAX4999
VCC
Figure 1. Switching Time
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Electrical Characteristicsest Circuits/Timing Diagrams (continued)
IN+
IN-
OUT+
OUT-
VIN+
VIN-
VOUT+
VOUT-
D0_1
D0_0
COM1
COM0
VCC
VCC
VCC
tPLHtPHLtRtF
RISE-TIME PROPAGATION DELAY = tPLH.
FALL-TIME PROPAGATION DELAY = tPHL.
tSK = |tPLH - tPHL|.
RS = RL = 50Ω.
50%
50%
50%
50%
90%
10%10%
50%
50%
50%
50%
90%
tPHLtPLH
MAX4999C1C2
Figure 2. Propagation Delay and Skew
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Electrical CharacteristicsTest Circuits/Timing Diagrams (continued)
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" USB_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" USB_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE USB_ CHANNEL TO ANOTHER USB_ CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
VCC
VOUT
VIN
GNDVIN
VOUTMEAS.
NETWORK
ANALYZER
50Ω50Ω
50ΩOFF-ISOLATION = 20log
ON-LOSS = 20log
CROSSTALK = 20log
50Ω
REF.
VOUT
VIN
VOUT
VINCHANNEL
SELECTHIGH
D_ _ _
COM_
0.1µF
MAX4999
Figure 3. Off-Isolation, On-Loss, and Crosstalk
MAX4999USB 2.0 Hi-Speed Differential
8:1 Multiplexer
Typical Operating Characteristics
(VCC= +3.3V, TA= +25°C, unless otherwise noted.)
ON-RESISTANCE
vs. VCOM_
MAX4999 toc01
VCOM_ (V)
VCC = +3.0VVCC = +3.3V
VCC = +3.6V
ON-RESISTANCE
vs. VCOM_
MAX4999 toc02
VCOM_ (V)
VCC = +3.3VTA = +85°C
TA = +25°C
TA = -40°C
LEAKAGE CURRENT
vs. TEMPERATURE
MAX4999 toc03
TEMPERATURE (°C)
LEAKAGE CURRENT (nA)-153560
VCC = +3.6V
COM_ ON-LEAKAGE
COM_ OFF-LEAKAGE
QUIESCENT SUPPLY CURRENT
vs. TEMPERATURE
MAX4999 toc04
TEMPERATURE (°C)
QUIESCENT SUPPLY CURRENT (-153560
VCC = +3.3V
VCC = +3.0VVCC = +3.6V
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4999 toc05
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
VIH
VIL
-10010100100010,000
FREQUENCY RESPONSE
MAX4999 toc06
FREQUENCY (MHz)
MAGNITUDE (dB)
OFF-ISOLATION
ON-RESPONSE
CROSSTALK
EYE DIAGRAM - SINGLE
MAX4999 toc07EYE DIAGRAM - DOUBLE
MAX4999 toc08

Partno	Mfg	Dc	Qty	Available	Descript
MAX4999ETJ+	MAXIM	N/a	189	avai	USB 2.0 Hi-Speed Differential 8:1 Multiplexer