Maxim manual 0Gbps PCI Express Passive Switches MAX4888A/MAX4889A, In+ Out+

Page 8

5.0Gbps PCI Express Passive Switches

MAX4888A/MAX4889A

Test Circuits/Timing Diagrams (continued)

 

 

 

3.3V

 

 

 

 

 

V+

 

 

RS

NO_+ OR

MAX4888A/MAX4889A

 

 

NC_+

 

COM_+

 

 

IN+

 

 

OUT+

RISE-TIME PROPAGATION DELAY = tPLHX OR tPLHY

 

 

 

RL

FALL-TIME PROPAGATION DELAY = tPHLX OR tPHLY

 

 

 

tSK1 = D I F F E R E N C E I N P R O PA G AT I O N D E L AY ( R I S E - FA L L )

RS

NO_- OR

 

 

BETWEEN ANY TWO PAIRS

 

COM_-

 

 

NC_-

 

tSK2 = tPLHX - tPHLY OR tPHLX - tPLHY

IN-

 

 

 

OUT-

BETWEEN TWO LINES ON THE SAME PAIR

 

 

 

 

 

 

 

RL

 

 

 

 

 

SEL

 

 

 

 

 

tINRISE

 

tINFALL

1.5V

 

 

 

90%

90%

VIN+

 

 

 

50%

50%

 

 

 

 

 

0V

 

 

10%

 

10%

 

 

 

 

 

1.5V

 

 

 

 

 

VIN-

50%

50%

 

 

0V

 

 

 

 

 

 

 

 

tOUTRISE

tOUTFALL

tPLHX

 

 

tPHLX

 

 

1.5V

 

 

 

90%

90%

 

 

 

 

VOUT+

 

50%

50%

 

 

0V

 

 

10%

10%

 

 

 

 

 

1.5V

 

 

 

 

 

VOUT-

 

50%

50%

 

 

0V

 

 

 

 

 

tPHLY

 

 

tPLHY

 

 

Figure 2. Propagation Delay and Output Skew

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Contents 0Gbps PCI Express Passive Switches MAX4888A/MAX4889AMAX4888A/MAX4889A 0Gbps PCI Express Passive Switches Parameter Symbol Conditions MIN TYP MAX Units Analog SwitchLogic Input Parameter Symbol Conditions MIN TYP MAX Units DynamicPower Supply TURN-ON/-OFF Time vs. Supply Voltage Typical Operating CharacteristicsON-RESISTANCE vs. Vcom EYE Diagram + = 1.8V, f = 2.5GHz 600mVP-PPRBS SIGNAL, RS = RL = 50Ω††MAX4888A MAX4889A Pin DescriptionPIN Name Function Test Circuits/Timing Diagrams MAX4888A/MAX4889A0Gbps PCI Express Passive Switches MAX4888A/MAX4889A IN+ OUT+Detailed Description NC MAX4888A/MAX4889AFunctional Diagrams/Truth Table Applications Information Chip InformationTypical Application Circuit Package Information Thin QFN.EPS