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MAX9393ETJ+-MAX9393ETJ+T
Anything-to-LVDS Dual 2 x 2 Crosspoint Switches
General DescriptionThe MAX9392/MAX9393 dual 2 x 2 crosspoint switches
perform high-speed, low-power, and low-noise signal
distribution. The MAX9392/MAX9393 multiplex one of two
differential input pairs to either or both low-voltage differ-
ential signaling (LVDS) outputs for each channel.
Independent enable inputs turn on or turn off each differ-
ential output pair.
Four LVCMOS/LVTTL logic inputs (two per channel) con-
trol the internal connections between inputs and outputs.
This flexibility allows for the following configurations: 2 x 2
crosspoint switch, 2:1 mux, 1:2 splitter, or dual repeater.
This makes the MAX9392/MAX9393 ideal for protection
switching in fault-tolerant systems, loopback switching for
diagnostics, fanout buffering for clock/data distribution,
and signal regeneration.
Fail-safe circuitry forces the outputs to a differential low
condition for undriven inputs or when the common-
mode voltage exceeds the specified range. The
MAX9392 provides high-level input fail-safe detection
for LVDS, HSTL, and other GND-referenced differential
inputs. The MAX9393 provides low-level input fail-safe
detection for LVPECL, CML, and other VCC-referenced
differential inputs.
Ultra-low 98ps(P-P)(max) pseudorandom bit sequence
(PRBS) jitter ensures reliable communications in high-
speed links that are highly sensitive to timing error,
especially those incorporating clock-and-data recovery,
or serializers and deserializers. The high-speed switch-
ing performance guarantees 1.5GHz operation and less
than 67ps (max) skew between channels.
LVDS inputs and outputs are compatible with the
TIA/EIA-644 LVDS standard. The LVDS outputs drive
100Ωloads. The MAX9392/MAX9393 are offered in
a 32-pin TQFP package and operate over the extended
temperature range (-40°C to +85°C).
Also see the MAX9390/MAX9391 for the crossflow version.
ApplicationsHigh-Speed Telecom/Datacom Equipment
Central-Office Backplane Clock Distribution
DSLAM
Protection Switching
Fault-Tolerant Systems
Features1.5GHz Operation with 250mV Differential Output
Swing2psRMS (max) Random JitterAC Specifications Guaranteed for 150mV
Differential InputSignal Inputs Accept Any Differential Signaling
StandardLVDS Outputs for Clock or High-Speed DataHigh-Level Input Fail-Safe Detection (MAX9392)Low-Level Input Fail-Safe Detection (MAX9393)3.0V to 3.6V Supply Voltage RangeLVCMOS/LVTTL Logic Inputs Control Signal
Routing
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint SwitchesTOP VIEW
MAX9392
MAX9393
TQFP28293031252627
INA1INA1V
ASEL0ASEL1INA0INA0GND1315141611129
ENB1
OUTB1OUTB1
GND
ENB0
OUTB0OUTB0OUTA0VCC
OUTA0
ENA0
GND
OUTA1
OUTA1
ENA1BSEL1
INB1
INB1
BSEL0
INB0
INB0GND
VCC
PARTTEMP RANGEPIN-
PACKAGE
PKG
CODE
MAX9392EHJ-40°C to +85°C32 TQFPH32-1
MAX9392EHJ+-40°C to +85°C32 TQFPH32-1
MAX9393EHJ-40°C to +85°C32 TQFPH32-1
MAX9393EHJ+-40°C to +85°C32 TQFPH32-1
Pin Configurations
Ordering Information19-2913; Rev 1; 5/07
+Denotes a lead-free package.
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
EVALUATION KIT
AVAILABLE
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ _ = VCC, VCM= 0.05V to (VCC- 0.6V) (MAX9392), VCM= 0.6V to (VCC- 0.05V)
(MAX9393), TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, |VID| = 0.2V, VCM= 1.2V, TA= +25°C,
unless otherwise noted.) (Notes 1, 2, and 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.
VCCto GND...........................................................-0.3V to +4.1V
IN_ _, IN_ _, OUT_ _, OUT_ _, EN_ _,
_SEL_ to GND..........................................-0.3V to (VCC+ 0.3V)
IN_ _ to IN_ _..........................................................................±3V
Short-Circuit Duration (OUT_ _, OUT_ _)...................Continuous
Continuous Power Dissipation (TA= +70°C)
32-Pin TQFP (derate 13.1mW/°C
above +70°C).............................................................1047mW
Junction-to-Ambient Thermal Resistance in Still Air
32-Pin TQFP............................................................+76.4°C/W
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Soldering Temperature (10s)...........................................+300°C
PARAMETERSYM B O L CONDITIONSMINTYPMAXUNITS
LVCMOS/LVTTL INPUTS (EN_ _, _SEL_)Input High VoltageVIH2.0VCCV
Input Low VoltageVIL00.8V
Input High CurrentIIHVIN = 2.0V to VCC020µA
Input Low CurrentIILVIN = 0 to 0.8V010µA
DIFFERENTIAL INPUTS (IN_ _, IIIINNNN____ ____)
Differential Input VoltageVIDVILD > 0 and VIHD < VCC, Figure 10.13.0V
MAX93920.05VCC - 0.6Input Common-Mode RangeVCMMAX93930.6VCC - 0.05V
MAX9392|VID| < 3.0V-50+10Input CurrentIIN_ _,
IIN_ _MAX9393|VID| < 3.0V-10+90µA
LVDS OUTPUTS (OUT_ _, OOOOUUUUTTTT____ ____)
Differential Output VoltageVODRL = 100Ω, Figure 2250350450mV
Change in Magnitude of VOD
Between Complementary Output
States
ΔVODFigure 21.050mV
Offset Common-Mode VoltageVOSFigure 21.1251.251.375V
Change in Magnitude of VOS
Between Complementary Output
States
ΔVOSFigure 21.050mV
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
AC ELECTRICAL CHARACTERISTICS(VCC= 3.0V to 3.6V, fIN≤1.34GHz, tR_IN= tF_IN= 125ps, RL= 100Ω±1%, |VID| ≥150mV, VCM= 0.075V to (VCC- 0.6V) (MAX9392
only), VCM= 0.6V to (VCC- 0.075V) (MAX9393 only), EN_ _ = VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are
at VCC= 3.3V, |VID| = 0.2V, VCM= 1.2V, fIN= 1.34GHz, TA= +25°C, unless otherwise noted.) (Note 5)
Note 1:Measurements obtained with the device in thermal equilibrium. All voltages referenced to GND except VID, VOD, and ΔVOD.
Note 2:Current into the device defined as positive. Current out of the device defined as negative.
Note 3:DC parameters tested at TA= +25°C and guaranteed by design and characterization for TA= -40°C to +85°C.
Note 4:Current through either output.
Note 5:Guaranteed by design and characterization. Limits set at ±6 sigma.
Note 6:tSKEWis the magnitude difference of differential propagation delays for the same output over same conditions. tSKEW=
|tPHL- tPLH|.
Note 7:Measured between outputs of the same device at the signal crossing points for a same-edge transition, under the same
conditions.
Note 8:Device jitter added to the differential input signal.
DC ELECTRICAL CHARACTERISTICS (continued)(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ _ = VCC, VCM= 0.05V to (VCC- 0.6V) (MAX9392), VCM= 0.6V to (VCC- 0.05V)
(MAX9393), TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, |VID| = 0.2V, VCM= 1.2V, TA= +25°C,
unless otherwise noted.) (Notes 1, 2, and 3)
PARAMETERSYM B O L CONDITIONSMINTYPMAXUNITSVOUT_ _ or V OUT_ _ = 03040Output Short-Circuit Current
(Either Output Shorted to GND)|IOS|V ID = ±100m V N ote 4) VOUT_ _ = V OUT_ _ = 01824mA
Output Short-Circuit Current
(Outputs Shorted Together)|IOSB|VID = ±100mV, VOUT_ _ = V OUT_ _
(Note 4)5.012mA
SUPPLY CURRENTSupply CurrentICCRL = 100Ω, EN_ _ = VCC6898mA
PARAMETERSYM B O L CONDITIONSMINTYPMAXUNITS_SEL_ to Switched OutputtSWITCHFigure 31.1ns
Disable Time to Differential
Output LowtPHDFigure 41.7ns
Enable Time to Differential
Output HightPDHFigure 41.7ns
Switching FrequencyfMAXVOD > 250mV1.52.2GHz
Low-to-High Propagation DelaytPLHFigures 1, 5294410574ps
High-to-Low Propagation DelaytPHLFigures 1, 5286402555ps
Pulse Skew |tPLH - tPHL|tSKEWFigures 1, 5 (Note 6)17104ps
Output-to-Output SkewtCCSFigures 5, 6 (Note 7)467ps
Output Low-to-High Transition
Time (20% to 80%)tRFigures 1, 5; fIN = 100MHz112142185ps
Output High-to-Low Transition
Time (80% to 20%)tFFigures 1, 5; fIN = 100MHz112145185ps
Added Random JittertRJfIN_ _ = 1.34GHz, clock pattern (Note 8)2psRMS
Added Deterministic JittertDJ1.34Gbps, 223 - 1 PRBS (Note 8)6098psP-P
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
Typical Operating Characteristics(VCC= +3.3V, |VID| = 0.2V, VCM= +1.2V, fIN= 1.34GHz, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATUREMAX9392 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)3510-15
VCC = 3.6V
VCC = 3.0V
VCC = 3.3V
OUTPUT AMPLITUDE vs. FREQUENCY
MAX9392 toc02
FREQUENCY (GHz)
OUTPUT AMPLITUDE (mV)
OUTPUT RISE AND FALL TIMES
vs. TEMPERATUREMAX9392 toc03
TEMPERATURE (°C)
RISE/FALL TIME (ps)3510-15
fIN = 100MHz
PROPAGATION DELAY
vs. TEMPERATURE
MAX9392 toc04
TEMPERATURE (°C)
PROPAGATION DELAY (ps)
MAX9392
DIFFERENTIAL INPUT CURRENT
vs. TEMPERATUREMAX9392 toc05
TEMPERATURE (°C)
INPUT CURRENT (3510-15
VIN = 3.0V
VIN = 0.1V
MAX9393
DIFFERENTIAL INPUT CURRENT
vs. TEMPERATUREMAX9392 toc06
TEMPERATURE (°C)
INPUT CURRENT (3510-15
VIN = 3.2V
VIN = 0.3V
MAX9392
INPUT CURRENT vs. VIHDMAX9392 toc07
VIHD (V)
INPUT CURRENT (
VCC = 3V
IN_ _ OR IN_ _ = GND
VCC = 3.6V
MAX9393
INPUT CURRENT vs. VILDMAX9392 toc08
VILD (V)
INPUT CURRENT (
VCC = 3V
VCC = 3.6V
IN_ _ OR IN_ _ = VCC
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
PINNAMEFUNCTION1, 12,
20, 25GNDGroundINB0
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to VCC pulls
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).INB0
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to VCC pulls the
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).BSEL0
Input Select for B0 Output. Selects the differential input to reproduce at the B0 differential outputs. Connect
BSEL0 to GND or leave open to select the INB0 (INB0) set of inputs. Connect BSEL0 to VCC to select the INB1
(INB1) set of inputs. An internal 435kΩ resistor pulls BSEL0 low when unconnected.
5, 16,
24, 29VCCPower-Supply Input. Bypass each VCC to GND with 0.1µF and 0.01µF ceramic capacitors. Install both bypass
capacitors as close to the device as possible, with the 0.01µF capacitor closest to the device.INB1
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to VCC pulls
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).INB1
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to VCC pulls the
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).BSEL1
Input Select for B1 Output. Selects the differential input to reproduce at the B1 differential outputs. Connect
BSEL1 to GND or leave open to select the INB0 (INB0) set of inputs. Connect BSEL1 to VCC to select the INB1
(INB1) set of inputs. An internal 435kΩ resistor pulls BSEL1 low when unconnected.ENB1B1 Output Enable. Drive ENB1 high to enable the B1 LVDS outputs. An internal 435kΩ resistor pulls ENB1 low
when unconnected.OUTB1B1 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTB1 and OUTB1 at the receiver
inputs to ensure proper operation.OUTB1B1 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTB1 and OUTB1 at the receiver
inputs to ensure proper operation.ENB0B0 Output Enable. Drive ENB0 high to enable the B0 LVDS outputs. An internal 435kΩ resistor pulls ENB0 low
when unconnected.OUTB0B0 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTB0 and OUTB0 at the receiver
inputs to ensure proper operation.OUTB0B0 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTB0 and OUTB0 at the receiver
inputs to ensure proper operation.
Pin Description
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
PINNAMEFUNCTIONENA1A1 Output Enable. Drive ENA1 high to enable the A1 LVDS outputs. An internal 435kΩ resistor pulls ENA1 low
when unconnected.OUTA1A1 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTA1 and OUTA1 at the receiver
inputs to ensure proper operation.OUTA1A1 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTA1 and OUTA1 at the receiver
inputs to ensure proper operation.ENA0A0 Output Enable. Drive ENA0 high to enable the A0 LVDS outputs. An internal 435kΩ resistor pulls ENA0 low
when unconnected.OUTA0A0 LVDS Inverting Output. Connect a 100Ω termination resistor between OUTA0 and OUTA0 at the receiver
inputs to ensure proper operation.OUTA0A0 LVDS Noninverting Output. Connect a 100Ω termination resistor between OUTA0 and OUTA0 at the receiver
inputs to ensure proper operation.INA0
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to VCC pulls
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).INA0
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to VCC pulls the
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).ASEL0
Input Select for A0 Output. Selects the differential input to reproduce at the A0 differential outputs. Connect
ASEL0 to GND or leave open to select the INA0 (INA0) set of inputs. Connect ASEL0 to VCC to select the INA1
(INA1) set of inputs. An internal 435kΩ resistor pulls ASEL0 low when unconnected.INA1
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Noninverting Input. An internal 128kΩ resistor to VCC pulls
the input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).INA1
LVDS/HSTL (MAX9392) or LVPECL/CML (MAX9393) Inverting Input. An internal 128kΩ resistor to VCC pulls the
input high when unconnected (MAX9392). An internal 68kΩ resistor to GND pulls the input low when
unconnected (MAX9393).ASEL1
Input Select for A1 Output. Selects the differential input to reproduce at the A1 differential outputs. Connect
ASEL1 to GND or leave open to select the INA0 (INA0) set of inputs. Connect ASEL1 to VCC to select the INA1
(INA1) set of inputs. An internal 435kΩ resistor pulls ASEL1 low when unconnected.
Pin Description (continued)
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint SwitchestPHLtPLH
80%
20%20%
80%
50%VOD = 0
VOD = 0
VID = 0
VOD = 0
VOD = 0
VID = 0
50%
VID = VIN_ _ - VIN_ _
VOD = VOUT_ _ - VOUT_ _
tPLH AND tPHL MEASURED FOR ANY COMBINATION OF _SEL0 AND _SEL1.
VIN_ _VIHD
VILDVIN_ _
VOUT_ _
VOUT_ _tR
VIHD
VILD
VIHD
VILD
VIH
VIL
VOD = 0
tSWITCHtSWITCH
IN_0
IN_0
IN_1
IN_1
VID = 0
VID = 0
_SEL_
1.5V
IN_1
OUT_ _
OUT_ _
EN_0 = EN_1 = HIGH
VID = VIN_ _ - VIN_ _
IN_0IN_0
1.5V
VOD = 0
VID = VIN_ _ - VIN_ _
ΔVOD = ⎪VOD - VOD*⎪ΔVOS = ⎪VOS - VOS*⎪
VOD AND VOS ARE MEASURED WITH VID = +100mV
VOD* AND VOS* ARE MEASURED WITH VID = -100mV
IN_ _
IN_ _
RL/2
RL/2
VOD
OUT_ _
OUT_ _
1/4 MAX9392/MAX9393
EN_ _ = HIGH
VOS
Figure 1. Output Transition Time and Propagation Delay Timing
Diagram
Figure 3. Input to Rising/Falling Edge Select and Mux Switch Timing Diagram
Figure 2. Test Circuit for VODand VOS
