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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

    SN74LVC14A: Tj value 0 Locked

    263 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G34: SN74LVC1G34DBVR low R between 5V & GND pins 0 Locked

    1284 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74LVC3G17: Level translator Vcc = 3V, Inputs = 5V? 0 Locked

    483 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Not Answered

    [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)? 0 Locked

    13210 views
    0 replies
    Started over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN7406: Customer (Kepco) rejected several shipments of parts from Avnet due to rusted or tarnished leads 0 Locked

    685 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74LVC1G17: About NC-pin 0 Locked

    330 views
    1 reply
    Latest over 7 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74HCT273: TI SN74HCT273 Din hold time 0 Locked

    1409 views
    5 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74ALVC244: SN74ALVC244PWR 0 Locked

    514 views
    2 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0204: VIL of I/O pin 0 Locked

    423 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G123: Output Pulse duration 0 Locked

    1979 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LS31: What is the minimum pulse width and the maximum frequency which can be input to SN74LS31? 0 Locked

    428 views
    3 replies
    Latest over 7 years ago
    by Emrys Maier
  • Answered

    SN74AHC1G09: IBIS model required. 0 Locked

    486 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Not Answered

    [FAQ] Where do I connect the thermal pad of the logic QFN devices? 0 Locked

    4252 views
    0 replies
    Started over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LV4T125: Thermal pad connection 0 Locked

    1160 views
    1 reply
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    TINA/Spice/SN74AUP1G80: Need the SPICE Model 0 Locked

    815 views
    2 replies
    Latest over 7 years ago
    by Kumar Munusamy70
  • Suggested Answer

    SN74AVC4T774: Max supported data rate for 3.3V to 1.2V/1.5V/1.8V/2.5V/3.3V level translation 0 Locked

    414 views
    2 replies
    Latest over 7 years ago
    by ShreyasRao
  • Suggested Answer

    SN74HC139: IBIS MODEL 0 Locked

    441 views
    1 reply
    Latest over 7 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HCT244: SN74HCT244 output current problem 0 Locked

    406 views
    1 reply
    Latest over 7 years ago
    by Dylan Hubbard
  • Answered

    TXS0108E: May I have some question for the part different ? 0 Locked

    5389 views
    12 replies
    Latest over 7 years ago
    by TAlex Wu
  • Answered

    SN74LS244: What does the 'E4' at the end of the part number mean? 0 Locked

    695 views
    2 replies
    Latest over 7 years ago
    by John Russo
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