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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

    SN74AXC8T245: Is the pull-up resistor (10K) mandatory for the DIR control pins? 0 Locked

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

    SN74LVC1G240: Regarding current consumption 0 Locked

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

    SN74AUP1T04: Level shifter for the output of OP amp 0 Locked

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

    SN74HCS21-Q1: Glitch in the output of the SN74HCS21-Q1 when power up 0 Locked

    558 views
    4 replies
    Latest over 2 years ago
    by Haiming Qu
  • Suggested Answer

    SN74AXC4T774: SN74AXC4T774PWR IBIS ISSUE 0 Locked

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

    SN74HC594: SN54HC594 obsolete 0 Locked

    308 views
    1 reply
    Latest over 2 years ago
    by Ian Graham
  • Answered

    SN74LV06A: IBIS model 0 Locked

    261 views
    1 reply
    Latest over 2 years ago
    by Albert Xu1
  • Answered

    TXU0101-Q1: The output signal is distorted when the frequency of the input signal is ~50MHz 0 Locked

    832 views
    5 replies
    Latest over 2 years ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74LVC3G17: Schematics Review 0 Locked

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

    LSF0102: About VOL regulations 0 Locked

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

    TXS0102: Schematics Review 0 Locked

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

    SN74AUP1T02: IBIS/AMI or Spice simulation model 0 Locked

    350 views
    2 replies
    Latest over 2 years ago
    by Depeng Man
  • Not Answered

    TXS0104E: High Input Impedance Issue 0 Locked

    247 views
    3 replies
    Latest over 2 years ago
    by Michael Ikwuyum
  • Answered

    SN74AUP1T97: Possible ESD issues? 0 Locked

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

    TXS0108E: IO clamping when VCC = 0V ? 0 Locked

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

    TXU0202: Non-monotonic signal at input 0 Locked

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

    SN74HC164: SN74HC164 output issue 0 Locked

    342 views
    3 replies
    Latest over 2 years ago
    by Emrys Maier
  • Answered

    SN54S175: Looking for PSPICE model 0 Locked

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

    SN74HC08: IBIS/AMI or Spice simulation model 0 Locked

    308 views
    1 reply
    Latest over 2 years ago
    by Albert Xu1
  • Answered

    SN74HC174: Please provide the ESD (HBM and CDM) for SN74HC174N 0 Locked

    268 views
    1 reply
    Latest over 2 years ago
    by Albert Xu1
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