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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

    SN74LVC1G06-EP: Open Drain: Discrepancy between Logic Table and Description 0 Locked

    501 views
    4 replies
    Latest over 4 years ago
    by Atin Jain13
  • Answered

    SN54ACT244: Looking for a buffer IC accepting +3.3V inputs running off +5V 0 Locked

    1245 views
    3 replies
    Latest over 4 years ago
    by David Nyarko
  • Suggested Answer

    SN74LVC1G125: 100MHz at 1.8V 0 Locked

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

    SN74LVC1G240: SN74LVC1G240 - Package Thermal Impedance (DRY, DSF) 0 Locked

    676 views
    5 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    Level translator 0 Locked

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

    SN74AUP1G14: Pull-up resistor for output port 0 Locked

    377 views
    2 replies
    Latest over 4 years ago
    by Sadanori Kato
  • Not Answered

    SN74LVC1G17: Leakage current of internal clamp diode between OUTPUT(Y) and VCC 0 Locked

    597 views
    2 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74LVT16244B: Difference between AVC and LVT 0 Locked

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

    SN74LVT16244B: Power consumption estimation of buffer SN74LVT16244BDGGR 0 Locked

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

    SN74LVC1G175: falling edge time spec 0 Locked

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

    CD74HC4050: Regd operating output current (IOH and IOL) calculation +1 Locked

    667 views
    2 replies
    Latest over 4 years ago
    by Akash Gupta1
  • Answered

    SN54LVTH162244: Regd operating frequency calculation 0 Locked

    323 views
    2 replies
    Latest over 4 years ago
    by Akash Gupta1
  • Answered

    SN74LVTH2245: output to output skew 0 Locked

    535 views
    3 replies
    Latest over 4 years ago
    by David D
  • Suggested Answer

    SN74LVC1G14: whether Schmitt-Trigger as SN74LVC1G14DBVR has the input slew rate limit 0 Locked

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

    TXB0108: Oscillation at output 0 Locked

    4187 views
    10 replies
    Latest over 4 years ago
    by Jophins Cyriac
  • Answered

    [FAQ] [H] Voltage Translators - Top Questions Answered 0 Locked

    11548 views
    1 reply
    Latest over 4 years ago
    by Michael J Schultis
  • Suggested Answer

    TXS0108E: Output abnormal 0 Locked

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

    SN74HC32: Do I need current limiting resistor on input? 0 Locked

    1204 views
    4 replies
    Latest over 4 years ago
    by Bojan Jovanovic
  • Suggested Answer

    LSF0108: Vrefb> Vrefa+0.8v? What's the reason? 0 Locked

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

    SN74LVCH162244A: SN74LVCH162244A coupling noise is large than VILmax, whether it has risks to be high 0 Locked

    328 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
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