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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

    SN74LVC1T45: Lead frame differences 0 Locked

    565 views
    4 replies
    Latest over 3 years ago
    by Jack Guan
  • Answered

    SN74LVC1G125: What does the error message "Item is not fully scheduled" mean 0 Locked

    327 views
    5 replies
    Latest over 3 years ago
    by Owen Westfall
  • Suggested Answer

    SN74LVC1G07-Q1: (VOL) for SN74LVC1G07QDRYRQ1 when its Vcc = 3.3V 0 Locked

    318 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    /CLR function for D latch 0 Locked

    519 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AHC123A: Need to found same function replace 74HC123 0 Locked

    452 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74HCS11-Q1: Effects of temperature on switching thresholds for HCS logic family 0 Locked

    403 views
    4 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AUC16374: is it ok if input signal overshot to -0.8V? 0 Locked

    323 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Answered

    ESD Ratings (P/N: CD74HC4094PWR) 0 Locked

    177 views
    1 reply
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    by Owen Westfall
  • Not Answered

    TXB0304: spec check 0 Locked

    284 views
    3 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G17: Schematic review 0 Locked

    216 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
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    SN74LVC1G07: Schematic review 0 Locked

    617 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G11: Schematic review 0 Locked

    297 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2G17: Schematic review 0 Locked

    365 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74AVC4T245: Schematic review 0 Locked

    538 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    LSF0108: pull high resistor for GPIO 0 Locked

    337 views
    3 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LV14A: Indefinite output 0 Locked

    337 views
    2 replies
    Latest over 3 years ago
    by Yusuke Mukuno
  • Suggested Answer

    CD74HC4020: Pspice model 0 Locked

    414 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    CD74AC74: Pspice model 0 Locked

    423 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Answered

    SN74LVC1G125: no signal when used on SPI clock 0 Locked

    1409 views
    21 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVTH16245A-EP: What is the difference between CLVTH16245AMDLREP and 8V16245AMDLREPG4? 0 Locked

    344 views
    3 replies
    Latest over 3 years ago
    by Owen Westfall
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