Frequent Questions

  • [FAQ] Why is soft-start so important with PoE devices?

    Why is soft-start so important with PoE devices?

  • [FAQ] How is the PoE handshake done between PSE and PD (detection, classification and inrush)?

    How is the PoE handshake done between PSE and PD (detection, classification and inrush)?

  • [FAQ] What are the anticipated changes between the IEEE802.3at and IEEE802.3bt PoE standards?

    What are the anticipated changes between the IEEE802.3at and IEEE802.3bt PoE standards?

  • [FAQ] How does the data signal and power operate in the same Ethernet cable?

    How does the data signal and power operate in the same Ethernet cable?

  • [FAQ] BQ76930: or bq76940: Zero volts reported after boot

    Part Number: BQ76930 Other Parts Discussed in Thread: BQ76940 , Why do some cell voltages read 0 after boot with the bq76930 or bq76940?

  • [FAQ] How to calculate Junction Temperature for PoE PD + PWM Controller

    Part Number: TPS23751 Hi Sir May we know how to calculation TPS23751 power dissipation? As i know, the Tj = Pd * Rjc+ Tc, am i right? Bogey

  • [FAQ] JVM heap Low detected

    Part Number: CC1310 Other Parts Discussed in Thread: CCSTUDIO Tool/software: Code Composer Studio Hi, I am using CCSv8 for CC1310 development and facing JVM heap low detected issue. My ccstudio.ini have Xmx128m and Xmx768m values configured. Can…

  • [FAQ] What is the maximum capacitive load that a logic device can drive?

    Other Parts Discussed in Thread: SN74LVC2G34 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are a few issues with trying to determine a maximum capacitive load for a standard CMOS logic device. First is propagation delay…

  • [FAQ] TPS2388: May TPS2388 can direct replace BCM59121?

    Part Number: TPS2388 Hi Sir May TPS2388 can direct replace BCM59121? My customer question that how many effort they need to modify HW/SW. Bogey

  • [FAQ] MSP430F67771A: Difference between MSP430F6777A and MSP430F67771A

    Part Number: MSP430F67771A Other Parts Discussed in Thread: MSP430F6777 , MSP430F67771 , , MSP430F6777A Hello, Greetings. and sorry for the trouble. I could not find any data showing the difference between MSP430F6777 and MSP430F67771 Can any one…

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