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Logic

Logic

Logic forum

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Texas Instruments (TI) Logic support forum is an extensive online knowledge base where millions of technical questions and solutions are available 24/7. You can search logic IC content or ask technical support questions on everything from voltage level translation and transceivers to standard logic gates and specialty logic devices. Find the right solution for your circuit design challenges by using our TI E2E™ support forums that are supported by thousands of contributing TI experts.
Frequent questions
  • [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ This question is really about the input structure of a logic device. There are primarily two types of CMOS input structures - one with a positive clamping diode, and one without…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Where do I connect the thermal pad of the logic QFN devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ Some datasheets do not specify what should be done with the thermal pad, such as in the image below: The thermal pad is recommended to be soldered to the PCB and electrically…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum capacitive load that a logic device can drive?

    Emrys Maier
    Emrys Maier
    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…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why does a logic device's part number have an E4/G4 suffix?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ In short, there will be no difference between a device labelled SN74xxG4 and SN74xx. Historically, G4 and E4 suffixes meant that the devices were rated to be "Green" or…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between TXS TXB and LSF devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Is part number X pin to pin compatible with part number Y?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ It's extremely common to need to know if one device can be directly replaced with another. With Standard Logic devices, this is generally an easy process. The part number…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output transition rate for a logic device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Very few logic devices specify an output transition rate, and those that do only specify it under very specific conditions. The best…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why do the leadframes look strongly oxidized or corroded?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ Texas instruments has decided to change from non-roughened leadframe to single-side roughened leadframe for some of its parts. For this reason these devices look as if they…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the TXS device internal resistor variation/ tolerance

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ According to the design simulation, the variation of the 10K internal resistor of the TXS device can be between 6.5k to 15kohm across PVT.
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum junction temperature (TJMAX) for a device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ The vast majority of logic devices do not list a maximum junction temperature ( T J(max) ) on the datasheet. For logic devices, T J(max) is equal to the maximum storage temperature…
    • Answered
    • over 7 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74LVC244A: SN74LVC244A - input signal is larger than VCC voltage, but it fall within absolut max rating. 0 Locked

    467 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0104E: Input transition rise/fall rate 0 Locked

    583 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC8T245: SN74LVC8T245PWR 0 Locked

    1141 views
    9 replies
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    SN74AHCT244: SN74AHCT244 datasheet question about temperature 0 Locked

    848 views
    6 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74AHC1G00: input voltage vs. supply current for 74AHC1G* / 74AHCT1G*? 0 Locked

    829 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74AHC1G32: Schmitt-Trigger Action 0 Locked

    665 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G04: Trigger level problem 0 Locked

    483 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    LSF0102: Support MDC need pull-up resistor or not 0 Locked

    2715 views
    3 replies
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    SN74LVC1G123: Equation I could use to calculate R(ext) and C(ext) based on a specific pulse duration 0 Locked

    516 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    CD4099B: CD4099BF & CD4099BF3A 0 Locked

    584 views
    1 reply
    Latest over 7 years ago
    by Wade Vonbergen
  • Suggested Answer

    TXB0104-Q1: Internal pullup or pulldown 0 Locked

    725 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    SN74LV74A: Continuous output current in case of short time rating(10ms~50ms) 0 Locked

    471 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74LVC125A: Power Supply Sequencing and the Output Pins 0 Locked

    481 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0106: TXB0106 0 Locked

    672 views
    3 replies
    Latest over 7 years ago
    by ShreyasRao
  • Answered

    LSF0102: LSF0102 and TXS0102 major difference? 0 Locked

    999 views
    3 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    Hardware break points understanding 0 Locked

    393 views
    2 replies
    Latest over 7 years ago
    by LeonardEllis
  • Suggested Answer

    SN74LVC125A: channel isolation 0 Locked

    1398 views
    9 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    TXB0101: TXB0101 Pull up Resistor 0 Locked

    1004 views
    6 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    LM567C: LM567 - frequency stability 0 Locked

    3550 views
    16 replies
    Latest over 7 years ago
    by Simon Damphousse
  • Suggested Answer

    TXB0104: Power down of one side of the translator 0 Locked

    704 views
    4 replies
    Latest over 7 years ago
    by ShreyasRao
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