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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

    SN74LVC1G07: SOT-23 support pin 0 Locked

    299 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G32: 74LVC1G32 drives MOSFET LED driver 0 Locked

    447 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    TXU0204: High level output current 0 Locked

    439 views
    5 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUC2G07: VCC = 3.3V operation and VIH 0 Locked

    321 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G17-EP: SN74LVC1G17MDCKREP recommended temperature derating 0 Locked

    388 views
    3 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    SN74LV14A-Q1: About SN74LV14A-Q1's thermal information 0 Locked

    236 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Not Answered

    TXS0102: TXS0102DCTR marking 0 Locked

    361 views
    1 reply
    Latest over 1 year ago
    by Jack Guan
  • Answered

    SN74AXCH2T45: SN74AXCH2T45DCUR marking gap, 22JT vs. 22IT 0 Locked

    389 views
    5 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVC8T245: Alternate Part Suggestion with Auto-Direction Control Feature 0 Locked

    275 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    TXV0106: There seems to be an error in the datasheet. (Including TXV0106-Q1) 0 Locked

    310 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVC1G58: Thermal information 0 Locked

    370 views
    4 replies
    Latest over 1 year ago
    by franziskus
  • Suggested Answer

    TXS0102-Q1: Effect of Supply Tolerance 0 Locked

    366 views
    5 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74AXC4T774-Q1: Thermal Pad connection 0 Locked

    408 views
    2 replies
    Latest over 1 year ago
    by jingjun zhao
  • Answered

    SN74LVC1G125: Why OUTPUT is pulled high when PinA reach to 756mV 0 Locked

    349 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G08-Q1: the state of input/output pin when VCC is under voltage 0 Locked

    447 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN54SLC8T245-SEP: Unused Pins - NC or Tie to GND with resistor? 0 Locked

    453 views
    4 replies
    Latest over 1 year ago
    by Moral Assraf
  • Not Answered

    SN74HCT273: SN74HCT273PWR Product performance consulting 0 Locked

    463 views
    12 replies
    Latest over 1 year ago
    by yingjiao LI
  • Answered

    SN74AUP1G17: Device drivability clarification 0 Locked

    325 views
    3 replies
    Latest over 1 year ago
    by Alder Lim
  • Suggested Answer

    CD74HCT154: Finding Replacements for Obsolete Part Numbers CD74HCT154EN and CD74HC154EN 0 Locked

    361 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    LSF0002: evaluation kit and IBIS model 0 Locked

    371 views
    2 replies
    Latest over 1 year ago
    by Jack Guan
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