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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

    TXU0304: >100Mbps level translator: 3.3V=>1.8V 0 Locked

    585 views
    2 replies
    Latest over 2 years ago
    by Shota Mago
  • Suggested Answer

    SN74LXC1T45-Q1: Electrical Characteristics Table 0 Locked

    326 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G123 has a model in "PSPICE for TI" but there isn´t a model for SN74LV221A 0 Locked

    651 views
    1 reply
    Latest over 2 years ago
    by Albert Xu1
  • Suggested Answer

    LSF0108: A-side pullup resistor and high cap loading 0 Locked

    227 views
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  • Suggested Answer

    SN74AVC4T774: pin design check 0 Locked

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    1 reply
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  • Answered

    SN74HCS595: Seeking guidance on shift registers for driving a 9x9 LED matrix 0 Locked

    1004 views
    4 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    CD4046B: CD4046B VCO part 0 Locked

    822 views
    2 replies
    Latest over 2 years ago
    by Noel Fung
  • Suggested Answer

    SN74LXC2T45-Q1: Can support for IO level 0.69V translate to 1V at 125MHz ? 0 Locked

    307 views
    1 reply
    Latest over 2 years ago
    by Michael Ikwuyum
  • Answered

    SN74AHC1G04: Number of transistors in the SN74AHC1G04 chip 0 Locked

    249 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G74: as a frequency divider 0 Locked

    500 views
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    by Clemens Ladisch
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    SN74LVC1G97-Q1: Output current rating 0 Locked

    391 views
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    SN74LXC1T45-Q1: Data Pin Pull Down 0 Locked

    395 views
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    Latest over 2 years ago
    by Joshua Salinas
  • Suggested Answer

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    314 views
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    by Clemens Ladisch
  • Suggested Answer

    SN74AXC4T774: Could you share the model of PSPICE or Tina 0 Locked

    522 views
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    by Joshua Salinas
  • Suggested Answer

    SN74LVC1T45: 4 bits solution needed (features likes SN74LVC1T45) 0 Locked

    254 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC2G08: Slow Rise 3.3V 0 Locked

    268 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Answered

    SN74AHCT1G08: Maximum Output Capacitance 0 Locked

    283 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Answered

    SN74AHC157: IBIS Model 0 Locked

    293 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AHC541: SN74AHC541 0 Locked

    315 views
    2 replies
    Latest over 2 years ago
    by Burcu YERLI
  • Suggested Answer

    SN74LVC1T45: SN74LVC1T45 does it supports 1PPS signal 0 Locked

    357 views
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    Latest over 2 years ago
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