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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

    SN74LS640: About AC characteristic 0 Locked

    171 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74AXC1T45: PSPICE model / current consumption 0 Locked

    474 views
    4 replies
    Latest over 4 years ago
    by Jan Witte
  • Suggested Answer

    SN74AHC574: OUTPUT waveform unstable and there is not CLKOUT 0 Locked

    899 views
    15 replies
    Latest over 4 years ago
    by Hanmin Zhang
  • Answered

    SN74HC153: SN74HC153NSR:ESD data request 0 Locked

    332 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74AVC4T234: Maximum data rate at 1.2V / 80 MHz clock and 160 Mbps DDR data rate 0 Locked

    903 views
    4 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Not Answered

    SN74AUP1T08: Can they use SN74AUP1G08 instead? 0 Locked

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

    CD4046B: Multiplication circuit to be locked on a range of frequencies from 47 Hz to 63 Hz. 0 Locked

    1255 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Not Answered

    SN74HC86: in someone batch, product can't work stably and the current increase continually. 0 Locked

    480 views
    5 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVT244B: Isolation level 0 Locked

    314 views
    4 replies
    Latest over 4 years ago
    by Kazuhiko Hirano
  • Suggested Answer

    SN74LVTH244A: Bit-to-Bit skew and Part-to-Part skew 0 Locked

    401 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC86A: different bottom marking from different suppliers 0 Locked

    391 views
    7 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC8T245: channel-to-channel and part-to-part skew 0 Locked

    406 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC8T245: SN74LVC8T245\Maximum supported clock rate 0 Locked

    262 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    TIBPAL16R4-15M: Partner Programmer 0 Locked

    240 views
    2 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74HC245A: Missing Datasheet 0 Locked

    354 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74HCS238: Compatibility verification with CPLD(ICE40UP5K-SG48I) 0 Locked

    371 views
    4 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    Comparator 0 Locked

    454 views
    7 replies
    Latest over 4 years ago
    by Sylvain
  • Suggested Answer

    SN74LS122: MC8601 to SN74LS122 0 Locked

    783 views
    7 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74AXC8T245: Any similar devices having Level 2/3 Isolation? 0 Locked

    239 views
    2 replies
    Latest over 4 years ago
    by Kazuhiko Hirano
  • Suggested Answer

    SN74LVC2G17-Q1: Could you please give me SN74LVC2G17-Q1 information? 0 Locked

    365 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
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