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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] Difference between Multiplexer/De-multiplexer and Analog Switch

    Hari T O0
    Hari T O0
    Other Parts Discussed in Thread: TS5A3159-Q1 , TMUX1209 FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ Hi Team, May I know difference is there between mux/demux IC's and analog switch IC's? I'm comparing this in the context…
    • Answered
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I determine the output voltage (VOH, VOL) or output current (IOH, IOL) of a CMOS logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ The high logic level output voltage of a logic device with no load will be the supply voltage. The output current of a logic device is determined by the load connected to the device…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What happens when I connect a logic device's output to a 50 ohm transmission line?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Transmission lines cause a lot of confusion for engineers. I hope to clear up some of that here. I will break this up into a few sections, so if you already know something you can…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Can I connect two outputs from a CMOS logic device together directly?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ **** It's important to note that this FAQ is in reference to CMOS devices. Bipolar devices should not be paralleled in this fashion. **** The primary concern with connecting outputs…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What does 'partial power down' or 'Ioff' mean in the datasheet?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The " Ioff " specification in the electrical characteristics table is only in the datasheet of devices that have the special feature of " partial power down " - also known as " back…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Why does my device not switch at VIH or VIL?

    Karan Kotadia
    Karan Kotadia
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ What is V IH and V IL ? JEDEC - V IH min is the least positive (most negative) value of high-level input voltage for which operation…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I size pull-up or pull-down resistors?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74AUP1G34 FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ Pull-up and pull-down resistors are required in many logic systems to provide a valid logic state when a wire connected to a CMOS input…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum data rate (or operating frequency) for a logic gate or buffer?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G34 , SN74LVC1G79 FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ ** NOTE ** This FAQ is in reference to push-pull output devices. Open-drain outputs will inherently have slower operating…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output voltage (VOH or VOL) when the output current is X or the supply voltage is Y?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are circumstances where you might want to know a VOH or VOL Value that is not given. I will describe two cases: If you want VOH for a supply voltage that is not given (for…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] How do the LSF translators work?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: LSF0101 , LSF0002 , LSF0102 , LSF0204 , LSF0204D , LSF0108 , LSF0102-Q1 , LSF0204-Q1 , LSF0108-Q1 FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ The LSF family of translators generates more questions…
    • over 6 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74AHC1G32: Power Cosumption 0 Locked

    473 views
    5 replies
    Latest over 3 years ago
    by Jonathan Navor
  • Answered

    LSF0204: Pull-up resistance 0 Locked

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

    LSF0204D: LSF0204D Voh, Vol 0 Locked

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

    SN74LVC2G74: What is the difference between SN74LVC2G74 and SN74LVC1G74? 0 Locked

    1999 views
    2 replies
    Latest over 3 years ago
    by Charlie Xiao
  • Suggested Answer

    SN74LS14: SN74LS14 IT+ range 0 Locked

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

    SN74AUP1G07: Open drain at 5V. 0 Locked

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

    sn74hcs74pw 0 Locked

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

    SN74HCT541: Change of data sheet specifications (thermal information) 0 Locked

    330 views
    2 replies
    Latest over 3 years ago
    by Daisuke Higa
  • Answered

    SN74AXC2T245-Q1: 1.8V I/O model not found in IBIS model 0 Locked

    433 views
    2 replies
    Latest over 3 years ago
    by Sreelekshmi Unnithan
  • Answered

    LSF0204: LSF0204 schematic check 0 Locked

    357 views
    4 replies
    Latest over 3 years ago
    by Jack Guan
  • Suggested Answer

    SN74AHC125Q: Difference between SN74AHC125Q and SN74AHC125-Q1 Automotive grade 0 Locked

    546 views
    8 replies
    Latest over 3 years ago
    by Owen Westfall
  • Suggested Answer

    SN74LVC16245A: Mineral oils in ink banned in France 0 Locked

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

    SN74LVC1G125: Question involving TPS62091, SN74LVC1G125 and SN65HVD1781 - SN74LVC1G125 0 Locked

    646 views
    3 replies
    Latest over 3 years ago
    by Jeferson Pehls
  • Answered

    LSF0108-Q1: LSF0108-Q1 schematic check 0 Locked

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

    SN74AHC1G04: Where made in? 0 Locked

    303 views
    2 replies
    Latest over 3 years ago
    by sakiko kaji
  • Suggested Answer

    SN74HCS245: 16 channels bus transciever 0 Locked

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

    SN74LVC1G125: compare to 1G126 0 Locked

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

    SN74HCT273: Electrical characteristics of VOH and VOL 0 Locked

    193 views
    2 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC8T245: unrecommended range 1.2V to 1.4V 0 Locked

    255 views
    1 reply
    Latest over 3 years ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74AXC4T245: VOH and VOL 0 Locked

    266 views
    2 replies
    Latest over 3 years ago
    by Michael Ikwuyum
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