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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

    LSF0204-Q1: switch saturation levels 0 Locked

    618 views
    10 replies
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

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    TXU0304-Q1: vs TXU0304 0 Locked

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    SN74AVCA406: MAX Clock speed 0 Locked

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    SN74HCS594: Table 8-1 0 Locked

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    SN74LV123A: is the part a proper alternative for Nexperia 74HC123 0 Locked

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  • Suggested Answer

    SN74LVC2G126: Pull-up resistor on output 0 Locked

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    3 replies
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    by Clemens Ladisch
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    SN74LVC16245A: SN74LVC16245 vs SN74LVCH16245 0 Locked

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    SN74AHC244-Q1: TAPE DIMENTIONS 0 Locked

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    by Albert Xu1
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    SN74AHCT244Q: What is a Q device? 0 Locked

    315 views
    1 reply
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    by Clemens Ladisch
  • Suggested Answer

    TXB0104-Q1: TXB0104-Q1 RECOMMEND for level shift the directions signal only 0 Locked

    448 views
    3 replies
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    by Clemens Ladisch
  • Not Answered

    SN54SLC8T245-SEP: Maximum operating frequency. 0 Locked

    325 views
    3 replies
    Latest over 2 years ago
    by Dan Oliver
  • Suggested Answer

    LSF0101: X2SON DTQ0006A Footprint 0 Locked

    718 views
    10 replies
    Latest over 2 years ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74AVC8T245-Q1: internal delamination of the device 0 Locked

    318 views
    1 reply
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    by Michael Ikwuyum
  • Answered

    SN74AVC16T245: The output caused by invalid input logic level 0 Locked

    259 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74HC541: A method to prevent leakage current from being connected from IO to VCC 0 Locked

    313 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Not Answered

    TXB0104-Q1: TXB0104-Q1 circuit problem and current backflow problem 0 Locked

    353 views
    5 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXU0101: Layout guidance results in permanently disabled IC 0 Locked

    256 views
    3 replies
    Latest over 2 years ago
    by Jack Guan
  • Suggested Answer

    SN74LV6T17: SN74LV6T17 - not able to find the land pattern 0 Locked

    272 views
    1 reply
    Latest over 2 years ago
    by Swathi D
  • Answered

    SN74LVC1G123: Is there a version with inverted output? 0 Locked

    445 views
    2 replies
    Latest over 2 years ago
    by user6067694
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