ST1394

® ST1394 IEEE1394 ONE PORT CABLE TERMINATION NETWORK WITH ESD PROTECTION DIODES IPAD™ MAIN APPLICATIONS IEEE1394 line termination on: ■ ■ ■ ■ ■ TPB+ TPATpBias Desktops Notebooks Digital Camcorders External storage drive Set Top Box 139 TPBGND TPA- FEATURES ■ Line termination for 2 twisted pairs TPA and TPB ■ The device complies with IEEE1394 requirement for differential and common more impedance on TPA and TPB line ■ Monolithic device with complete 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 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 ■ ■ ■ ■ ■ SOT23-6L (Plastic) Table 1: Order Code Part Number ST1394-01SC6 Marking 139 Figure 1: Pinout Configuration TPA+ GND R1 R2 TpBias TPA- C 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 ...