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  • LSF0108-Q1：Ask some questions about the product being used and something went wrong。

    Part Number: LSF0108-Q1 VCCA输入3.3V，VCCB输入5V，EN引脚使能时，A1的输入为3.3V，B1的输出没有上拉电阻，B1输出多少V，A1和B1之间是否有MOS。 没办法输入英文？
    • Answered

  • LSF0108-Q1: LSF0108-Q1 schematic check

    Resolved
    Part Number: LSF0108-Q1 Hi, Support Team We use TI device LSF0108-Q1, Could help to check schematic is okay? 1. Please check Vref_A/Vref_B/ EN is okay? 2. we also use different pull high voltage, the schematic is okay? If any suggestion, Please advise…
    • Resolved

  • LSF0108-Q1: The output voltage of A side is limited by VrefA

    TI Thinks Resolved
    Part Number: LSF0108-Q1 Other Parts Discussed in Thread: LSF0108 , According to the description of the following video, the A side of LSF0108 should be able to output a voltage higher than VrefA, such as 3.3V in the video. But when we use LSF0108-Q1 , it…
    • Answered

  • LSF0108-Q1: The high level output voltage of A side is clamped by VrefA

    Resolved
    Part Number: LSF0108-Q1 Other Parts Discussed in Thread: LSF0108 , Hi Ti support team, We encountered one issue when using LSF0108-Q1 level shifter. Below is the schematic. We connected VrefA to 1.2V source. VerfB and EN are tied to 3.3V source through…
    • Resolved
    • Answered

  • LSF0108-Q1: VREF_B decoupling capacitor size

    Resolved
    Part Number: LSF0108-Q1 Hi, The datasheet recommends C at VREF_B with 100 nF. That limits LOW->HIGH slope speed on EN to many milliseconds. Somewhere else in some video info I found: "The 0.1 microfarad capacitor connected to the VREF B voltage node…
    • Resolved
    • Answered

  • LSF0108-Q1: How much its high level output voltage min is?

    Resolved
    Part Number: LSF0108-Q1 Hi team, Could you tell me how much its high level output voltage min is? I would like to know VCC=3.3V and 5V high level outputs respectively. In addition, what does "VIK" shown in its electrical characteristics mean? …
    • Resolved

  • LSF0108-Q1: Interconversion of 1.8V and 5V CMOS levels,Rpu resistance

    TI Thinks Resolved
    Part Number: LSF0108-Q1 Hi The conversion between 1.8V and 5V CMOS levels, If the IC output is all push-pull structure, is the resistor Rpu necessary? 8-channel, what do you do with dangling channels?Do not connect? Thanks!

  • LSF0108-Q1: Higher Output Voltage than Supply Reference Voltage of Level Shifter

    TI Thinks Resolved
    Part Number: LSF0108-Q1 Other Parts Discussed in Thread: TINA-TI I have V_REF_B powered to 3.3V and V_REF_A to 1.2V. For some reason, I am seeing 1.779V at my A-side output. Any ideas why? I was expecting 1.2V, not 1.779V.

  • LSF0108-Q1: About unused pins

    TI Thinks Resolved
    Part Number: LSF0108-Q1 Hi TI-team My customer want to know handling unused pins. For example, what should I do if they don't use A8 and B8 ? Is it okay to leave both unconnected (floating)? Best Regards, Koji Hayashi
    • Answered

  • LSF0108-Q1: About Layout Guidelines

    Resolved
    Part Number: LSF0108-Q1 Hi TI-team My customer is considering this IC. There is the following comment on P.15 of the data sheet. Place LSF close to high voltage side. What is the reason for this ? They use two boards, one for MCU (5V) and one for Bluetooth…
    • Resolved

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