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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

    TXS0108E: TXS0108E output issue - output pins not consistent in level shifting 0 Locked

    4624 views
    7 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AUP3G14: Input transition rise or fall rate 0 Locked

    1616 views
    4 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AUP1G06: Output Leakage Current, SN74AUP1G06 0 Locked

    1265 views
    5 replies
    Latest over 8 years ago
    by Sornam Viswanathan V
  • Answered

    SN74ALVC164245: Placement of decoupling capacitors 0 Locked

    646 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Answered

    LSF0108: tps386000 and lsf0108 pull up resistor issue 0 Locked

    1441 views
    4 replies
    Latest over 8 years ago
    by user1359349
  • Suggested Answer

    CD4044B: Vih for 3.3V supply operation 0 Locked

    932 views
    2 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HC573AQDWRQ1 The output (Q) will have an indefinite output 0 Locked

    728 views
    2 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0108: One-shot circuitry and short input pulses 0 Locked

    5547 views
    12 replies
    Latest over 8 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LVC244A: about SN74LVC244 Ioff 0 Locked

    949 views
    2 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVTH16245A: Looking for the land pattern to the SN74LVTH16245ADGVR 0 Locked

    870 views
    3 replies
    Latest over 8 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LV244A: Δt/Δv 0 Locked

    584 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUC1G17: SN74AUC1G17 output 0 Locked

    684 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Not Answered

    CD4077B: does CD4077B support 3.3V power supply? 0 Locked

    1021 views
    2 replies
    Latest over 8 years ago
    by Emrys Maier
  • Not Answered

    CD4077B: what's the difference of NOR Gate and Exclusive NOR gate? 0 Locked

    1416 views
    3 replies
    Latest over 8 years ago
    by Max Han
  • Suggested Answer

    TXS0104E: Rds(on) of TXS0104 in low level output 0 Locked

    3297 views
    10 replies
    Latest over 8 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AHC1G04: VIH(min) and VOH(min) with 3.3V Vcc 0 Locked

    774 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC373A: Is output state knowable during power-up with /OE = L, LE = L, D = H? 0 Locked

    772 views
    2 replies
    Latest over 8 years ago
    by Jonathan Bender
  • Answered

    SN74LVC8T245: Maximum operating Speed of level shifter from 3.3V to 1.8V 0 Locked

    1177 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AUP1G57: what's the difference between 1t and 1g devices 0 Locked

    938 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC244A: the abs. minimum input negative AC voltage 0 Locked

    739 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
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