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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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View FAQ threads
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  • Answered

    TXB0108: Voltage translator not outputting the right voltage 0 Locked

    1297 views
    14 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    CD4504B: CD4504B Quiescent current in CMOS-CMOS mode 0 Locked

    375 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LV244A: When Vcc is lower than 2V 0 Locked

    293 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Not Answered

    SN74LVC14A: Communication Failure 0 Locked

    388 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74V293: Any Reason to not use -6 or -7.5 Variant Part Numbers for Designs Requiring -10 Variant? 0 Locked

    248 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74HCS14: HCS Device Features 0 Locked

    392 views
    2 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0102: TXS0102 Gives OUTPUT After 20 Seconds 0 Locked

    404 views
    1 reply
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74F02: SN74F02DR Lifecycle query 0 Locked

    307 views
    2 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC2G17: If powering the SN74LVC2G17 from 5.0V, can a 3.3V logic signal reliably work? 0 Locked

    458 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC4245A: SN74LVC4245A 0 Locked

    539 views
    3 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74HC240: Part number 0 Locked

    330 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC244ARGYR Query 0 Locked

    224 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74AUP3G34: SN74AUP3G34 0 Locked

    317 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0204: IC Power consumption 0 Locked

    324 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G123: Looking for a digital line programmable delay circuit 0 Locked

    1656 views
    4 replies
    Latest over 1 year ago
    by Andras Magyar
  • Answered

    SN74LVC125A: Does the device support test mode for aging test 0 Locked

    295 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    SN74LV125A: we use buffer in STO circuit and this buffer cannot be recognized as a fail-safe part. 0 Locked

    478 views
    2 replies
    Latest over 1 year ago
    by Long Wang
  • Suggested Answer

    SN74AHCT86: SN74AHCT86PWR - drop in alternative 0 Locked

    285 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN7438: What is the ESD rating of this device? 0 Locked

    273 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    SN74ACT00: Web page recommends SN74AHCT00 0 Locked

    399 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
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