ST1394 Datasheet | STMicroelectronics

FEATURES - Line termination for 2 twisted pairs TPA and TPB - The device plies with IEEE1394 requirement for differential and mon more impedance on TPA and TPB line - Monolithic device with plete termination for one IEEE1394 connection 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 remendation for line termination of TPA and TPB differential lines. Excellent matching of the termination resistor will minimize mon mode noise that is needed to improve munication speed. BENEFITS - - - - - SOT23-6L (Plastic) Table 1: Order Code Part Number ST1394-01SC6 Marking 139 Figure 1: Pinout Configuration TPA+ GND R1 R2 Tp Bias TPA- R5 TPB- R4 R3 TPB+ Resistor matching between TPA / TPB lines. Resistor matching between TPA+ / TPASingle chip devise versus 11 discretes No need for additional overvoltage protection device High level of integration Lines Names Value TPA+ TPA- TPB+ TPBR1 55Ω R12 55Ω Typ. R3 55Ω Typ. R4 55Ω Typ. Rpd R5 55Ω 20% C 250p F 20% Zener Capacitance Cz 5p F Max. Tolerance Typ. Matching Matching between 55Ω Resistor at ±1% max TM: IPAD is a trademark of STMicroelectronics. October 2004 REV. 2 1/6 Table 2: Absolute Ratings (Tamb = 25°C) Symbol Tstg Tj TL 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 Table 3: Electrical Characteristics (Tamb = 25°C) Symbol CZ Rpd C (R1+R2), (R3+R4) Parameter Zener capacitance Pull down resistor Capacitor in parallel with Rpd Bus termination impedance 102 5 250 110 118 Min. Typ. 55 5 Max. Unit Ω p F kΩ p F Ω R1,...