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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

    LSF0204: 3.3V to 1.8V UART bi-directional level translation 0 Locked

    1765 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Not Answered

    need help for level shift promotion 0 Locked

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

    SN74LVC244A: SN74LVC/SN74CBT/LSF 0 Locked

    1552 views
    10 replies
    Latest over 4 years ago
    by Bryan Marshall
  • Suggested Answer

    SN74ALVC08-Q1: Tdp and data rate 0 Locked

    335 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74AHC1G126-EP: Output state until minimum VCC reaches during power up 0 Locked

    310 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74AUC125: Skew data 0 Locked

    297 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74LV4T125: Power consumption for SN74LV4T125PWR 0 Locked

    288 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Not Answered

    SN74LVC1G123: IEC 60747-8 0 Locked

    210 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HC165: Interfacing IC SN74HC165D with dspic33 uC 0 Locked

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

    TXS0102-Q1: Internal 10K pull-up resistors 0 Locked

    544 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN54AC14: Question regarding different Inverter Schmitt Triggers - RUAG Space 0 Locked

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

    SN74AUP1G34: Input Hysteresis 0 Locked

    430 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0102: Vref_A minimum threshold voltage for 0.95V input 0 Locked

    308 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74AHC123A: Tw Design calculation and Observed output is not matching 0 Locked

    429 views
    2 replies
    Latest over 4 years ago
    by Sandeep NS
  • Answered

    TXB0104: current driving capacity 0 Locked

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

    SN74LV245A: Maximum Input signal of SN74LV245APWR 0 Locked

    283 views
    2 replies
    Latest over 4 years ago
    by Yuto Kitamura
  • Answered

    SN74LVC2G17: Recommended rise time and fall time specification 0 Locked

    537 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Not Answered

    SN74LVC1T45: How to let the output from 0 down to -0.7v 0 Locked

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

    SN74AHC1G04: Pspice for TI model for this part generates simulation error 0 Locked

    459 views
    3 replies
    Latest over 4 years ago
    by Henri Girard
  • Answered

    LSF0108: Voltage Level Translator Bidirectional 1 Circuit 8 Channel 0 Locked

    471 views
    5 replies
    Latest over 4 years ago
    by Clemens Ladisch
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