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I Full or Hall Duplex
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I Start Bit Generated
..
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MAX9392EHJ
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
5mm x 5mm thin QFN with exposed paddle and 32-pin
TQFP packages and operate over the extended tem-
perature 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 Switches19-2913; Rev 0; 8/03
Functional Diagram and Typical Operating Circuit appear at
end of data sheet.
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,
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
32-Pin 5mm x 5mm Thin QFN (derate 21.3mW/°C
above +70°C).............................................................1702mW
Junction-to-Ambient Thermal Resistance in Still Air
32-Pin TQFP............................................................+76.4°C/W
32-Pin 5mm x 5mm Thin QFN....................................+47°C/W
Junction-to-Case Thermal Resistance
32-Pin 5mm x 5mm Thin QFN......................................+2°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
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
AC ELECTRICAL CHARACTERISTICS(VCC= +3.0V to +3.6V, fIN1.34GHz, 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
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)
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.)
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint Switches
MAX9392/MAX9393
Anything-to-LVDS Dual 2 x 2
Crosspoint SwitchesFigure 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
