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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

    CD74HCT368: CD74HCT368: VCC voltage is provided from the input 0 Locked

    203 views
    2 replies
    Latest over 3 years ago
    by Sway Chen
  • Answered

    SN74AVC4T245: Ioff parameter SN74AVC4T245 0 Locked

    477 views
    4 replies
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LV164A: disfunction due to Noise perturbation 0 Locked

    261 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AHCT244-Q1: Buffer with higher output current 0 Locked

    422 views
    5 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC20T245: Group propagation skew vs individual channel skew 0 Locked

    284 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74LV8153: SN74LV8153 Address PINs information (A0,A1,A2) 0 Locked

    419 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC4T774: IBIS simulation user guide 0 Locked

    331 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G79-Q1: SN74LVC1G79QDCKTQ1 0 Locked

    335 views
    2 replies
    Latest over 3 years ago
    by SHAWN FONG
  • Answered

    CD40107B: Can't find the correct pinout 0 Locked

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

    SN74LVC1G02: Automotive-grade high-speed NOR gate 0 Locked

    321 views
    2 replies
    Latest over 3 years ago
    by Alan O
  • Suggested Answer

    CD74AC153M  Environmental information 0 Locked

    115 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
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    SN74ABT16374A: HBM ESD 0 Locked

    214 views
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    Latest over 3 years ago
    by Emrys Maier
  • Answered

    SN74AUP1T157: NC7SZ157P6X replacement with automotive grade 0 Locked

    331 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Not Answered

    [FAQ] Why are the TXS01xx VIH/VIL specifications so stringent? 0 Locked

    3077 views
    0 replies
    Started over 3 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LV1T34: Can the NC pin of SN74LV1T34DCKR be shirted to GND? 0 Locked

    209 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    SN74HC595: Technical issues 0 Locked

    511 views
    14 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0104E: logic level translator for I2C and I2S 0 Locked

    1528 views
    6 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    CD74HC4514: Truthtable clarification 0 Locked

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

    TXS0102: Max capacitive load when using for push-pull? 0 Locked

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

    SN74AVC8T245: Using SN74AVC8T245-Q1 as alternate for SN74AVC8T245 0 Locked

    280 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
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