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| (R) ST1394-01SC6 IEEE1394 ONE PORT CABLE TERMINATION NETWORK WITH ESD PROTECTION DIODES IPADTM (Integrated Passive and Active Devices) MAIN APPLICATIONS IEEE1394 line termination on: Desktops Notebooks Digital Camcorders External storage drive Set Top Box s s s s s TPB+ TPATpBias 139 TPBGND TPA+ FEATURES LINE TERMINATION FOR 2 TWISTED PAIRS TPA AND TPB THE DEVICE COMPLIES WITH IEEE1394 REQUIREMENT FOR DIFFERENTIAL AND COMMON MODE IMPEDANCE ON TPA AND TPB LINE MONOLITHIC DEVICE WITH COMPLETE TERMINATION FOR ONE IEEE1394 CONNECTION s s s SOT23-6L (Plastic) FUNCTIONAL DIAGRAM TPA+ DESCRIPTION The ST1394-01SC6 is an integrated termination network that optimizes board layout of the PHY layer in IEEE1394 one port cable application. This monolithic device is tested, according to ESD requirement described in IEC61000-4-2 standard level 2. ST1394-01SC6 device ruggedness limits overvoltage at the 1394 tranceiver inputs and outputs below acceptable limits. The ST1394-01SC6 implements IEEE1394 recommendation for line termination of TPA and TPB differential lines. Excellent matching of the termination resistor will minimize common mode noise that is needed to improve communication speed. BENEFITS Resistor matching between TPA / TPB lines. Resistor matching between TPA+ / TPASingle chip device versus 11 discretes No need for additional overvoltage protection device High level of integration s s s s s R1 R2 TpBias TPA- GND C Rpd TPB- R4 R3 TPB+ Lines Names Value TPA+ TPA- TPB+ TPB- Rpd GND Zener Capacitance Cz 5pF Max. R1 55 R2 55 Typ. R3 55 Typ. R4 55 Typ. R5 5k 20% C 250pF 20% Tolerance Typ. Matching Matching between 55 Resistor at 1% max. July 2003 - Ed: 1A 1/5 ST1394-01SC6 ABSOLUTE RATINGS (Tamb Symbol Tstg Tj TL 25C) Parameter and test conditions Storage temperature range Maximum junction temperature Lead solder temperature (10 second duration) Value -55 to +150 +150 260 Unit C C C ELECTRICAL CHARACTERISTICS (Tamb = 25C) Symbol Parameter Min. Typ. 55 5 5 250 102 110 118 Max. Unit pF k pF R1, R2, R3, R4 Bus termination resistors (note 1) CZ Rpd C (R1+R2), (R3+R4) Zener capacitance Pull down resistor Capacitor in parallel with Rpd Bus termination impedance Note 1: matching between 55 resistors is better than 1%. FUNCTIONNAL DIAGRAM TpBias 1F TPA+ TPA55 Twisted Pair A 55 250pF 5k 55 55 TPB+ TPB- Twisted Pair B 1M Outer shied 0.1F termination Minimize this distance 0.01F APPLICATION INFORMATION The functional diagram here above presents a IEEE1394-a cable and shows how to connect the ST1394-01SC6 in order to correctly terminate and filter the TPA and TPB lines. 2/5 ST1394-01SC6 TECHNICAL INFORMATION FREQUENCY BEHAVIOR OF DATA AND STROBE SIGNALS Fig. A1: Measurement conditions. Fig. A2: Test Board. RF test board TRACKING GENERATOR 50 +5V SPECTRUM ANALYSER Calibration kit board ST1394 Vg 50 Vin Vout Fig. A3: TPA line: comparison between Aplac model and device. 0.00 dB -5.00 Fig. A4: TPB line: comparison between Aplac model and device. 0.00 dB -5.00 -10.00 -15.00 -20.00 -10.00 -25.00 -30.00 -35.00 -15.00 -40.00 -45.00 -20.00 100.0k 1.0M Line 1 10.0M 100.0M f/Hz SimLine 1 1.0G -50.00 100.0k 1.0M Line 2 10.0M 100.0M f/Hz SimLine 2 1.0G Note: For a convenience reason, frequency response have been carried out on both TPA and TPB lines as if TPA+ and TPA- or TPB+ and TPB- were respectively Inputs and Outputs lines 3/5 ST1394-01SC6 Fig. A5: Crosstalk between TPA and TPB lines. 0.00 dB -25.00 -50.00 -75.00 -100.00 100.0k 1.0M 10.0M 100.0M f/Hz 1.0G Fig. A6: ST1394 APLAC model. Lbond 55 55 Lbond Rbond Lframe Lpin Lbond Rpin Rbond Ls Lpin Rs Rpin Port9 Ls Rs Ls Rpin Rgnd Lpin Lgnd 55 55 Rbond Rframepin Port10 250p Ls Lbond Lpin Rs Rpin Rbond Lpin Ls=1n Rs=100m Lpin =230p Rpin =50m Lbond =420p Rbond =50m LFrame=80p Rframepin=8.6m 5k Rs Lgnd =50p Rgnd =50m Port11 Port12 Cdiode =4p 4/5 ST1394-01SC6 PACKAGE MECHANICAL DATA SOT23-6L (Plastic) A DIMENSIONS REF. A A1 A2 b c D E e H L Millimeters Min. Typ. Max. 1.45 0.10 1.30 0.50 0.20 3.00 1.75 0.95 2.60 0.10 3.00 0.102 0.60 0.004 10 Min. 0.035 0 0.035 0.0137 0.004 0.11 0.059 0.0374 0.118 0.024 10 0.90 0 0.90 0.35 0.09 2.80 1.50 Inches Typ. Max. 0.057 0.004 0.0512 0.02 0.008 0.118 0.0689 E A2 e D b e C A1 H L FOOTPRINT DIMENSIONS 0.60 0.024 TPBIAS 1.20 0.047 TPA+ TPATPB+ TPBAGND AGND AVDD AVDD TPA+ TpBias GND TPA- 3.50 0.138 2.30 0.090 mm inch 1.10 0.043 TPB- TPB+ 0.95 0.037 Order code ST1394-01SC6 Marking 139 Package SOT23-6L Weight 16.7 mg Delivery mode Tape & reel Base qty 3000 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 5/5 |
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