IEEE1394 PORT CABLE TERMINATION NETWORK WITH PROTECTION DIODES IP

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IEEE1394 PORT CABLE TERMINATION NETWORK WITH PROTECTION DIODES IP

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ST1394
IEEE1394 PORT CABLE TERMINATION NETWORK WITH PROTECTION DIODES
IPADMAIN APPLICATIONS
IEEE1394 line termination
TPB+ TPATpBias
Desktops Notebooks Digital Camcorders External storage drive
TPBGND TPA-
FEATURES Line termination twisted pairs device complies with IEEE1394 requirement differential common more impedance line Monolithic device with complete termination IEEE1394 connection DESCRIPTION ST1394-01SC6 integrated termination network that optimizes board layout layer IEEE1394 port cable application. This monolithic device tested, according requirement described IEC61000-4-2 standard level ST1394-01SC6 device ruggedness limits overvoltage 1394 tranceiver inputs outputs below acceptable limits. ST1394-01SC6 implements IEEE1394 recommendation line termination differential lines. Excellent matching termination resistor will minimize common mode noise that needed improve communication speed. BENEFITS
SOT23-6L (Plastic) Table Order Code Part Number ST1394-01SC6
Marking
Figure Pinout Configuration
TPA+
TpBias TPA-
TPB-
TPB+
Resistor matching between lines. Resistor matching between TPA+ TPASingle chip devise versus discretes need additional overvoltage protection device High level integration
Lines
Names Value
TPA+ TPA- TPB+ TPBR1 Typ. Typ. Typ.
250pF
Zener Capacitance
Max.
Tolerance Typ.
Matching
Matching between Resistor
IPAD trademark STMicroelectronics.
October 2004
REV.
ST1394
Table Absolute Ratings (Tamb 25°C) Symbol Tstg Parameter test conditions Storage temperature range Maximum junction temperature Lead solder temperature second duration) Value Unit
Table Electrical Characteristics (Tamb 25°C) Symbol (R1+R2), (R3+R4) Parameter Zener capacitance Pull down resistor Capacitor parallel with termination impedance Min. Typ. Max. Unit termination resistors (note
Note matching between resistors better than
Figure Functionnal Diagram
TpBias TPA+ TPA55
Twisted Pair
250pF
TPB+ TPB-
Twisted Pair Outer shied 0.1µF termination
Minimize this distance
0.01µF
APPLICATION INFORMATION functional diagram here above presents IEEE1394-a cable shows connect ST1394-01SC6 order correctly terminate filter lines.
ST1394
TECHNICAL INFORMATION: Frequency behavior data strobe signals Figure Measurement confitions Figure Test Board
TRACKING GENERATOR
test board
SPECTRUM ANALYSER
Calibration board
ST1394
Vout
Figure line: comparison between Aplac model device
0.00 -5.00
Figure line: comparison between Aplac model device
0.00 -5.00 -10.00 -15.00 -20.00
-10.00
-25.00 -30.00
-15.00
-35.00 -40.00 -45.00
-20.00 100.0k
1.0M Line
10.0M 100.0M f/Hz SimLine
1.0G
-50.00 100.0k
1.0M Line
10.0M 100.0M f/Hz SimLine
1.0G
Note: convenience reason, frequency response have been carried both lines TPA+ TPA- TPB+ TPB- were respectively Inputs Outputs lines
ST1394
Figure Crosstalk between lines
0.00 -25.00
-50.00
-75.00
-100.00 100.0k
1.0M
10.0M 100.0M f/Hz
1.0G
Figure CST1394 APLAC model
Lbond Lbond Rbond Lframe Lpin Lbond Rpin Rbond Lpin Rpin Port9 Rpin Rgnd Lpin Lgnd Rbond Rframepin Port10 250p Lbond Lpin Rpin Rbond Lpin
Ls=1n Rs=100m Lpin =230p Rpin =50m Lbond =420p Rbond =50m LFrame=80p Rframepin=8.6m
Lgnd =50p Rgnd =50m
Port11 Port12
Cdiode
ST1394
Figure SOT23-6L Package Mechanical Data DIMENSIONS REF.
Millimeters Min. Typ. Max. 0.10 Min. 0.90 0.90 0.35 0.09 2.80 1.50 0.95 2.60 0.10 3.00 0.102 0.60 0.004 1.45 0.035 1.30 0.035 0.50 0.014 0.20 0.004 3.05 0.110 1.75 0.059
Inches Typ. Max. 0.057 0.004 0.051 0.02 0.008 0.120 0.069 0.037 0.118 0.024
Figure SOT23-6L Foot print dimensions millimeters)
0.60
TPBIAS TPA+ TPATPA+ TpBias
1.20 0.95
TPB+ TPBAGND
TPA-
TPB-
TPB+
Table Ordering Information Ordering code ST1394-01SC6 Marking Package SOT23-6L Weight 16.7 Base 3000 Delivery mode Tape reel
Note: More informations available application note: AN1783: "HOW MAKE FIRE-WIRE COMMUNICATION PORT SAFE?"
Table Revision History Date Jul-2003 28-Oct-2004 Revision First issue. SOT23-6L package dimensions change reference from millimeters (0.118 inches) 3.05 millimeters (0.120 inches). Description Changes
AVDD
AGND
3.50
2.30
1.10
AVDD
ST1394
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IEEE1394 PORT CABLE TERMINATION NETWORK WITH PROTECTION DIODES IP

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