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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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  • Not Answered

    Automotive voltage level translation from 12V to 3.3V 0 Locked

    16638 views
    6 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74ACT244: risk when Vcc=0V, input/output with high logic 0 Locked

    3207 views
    6 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AUP1G79 power up state 0 Locked

    1501 views
    5 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC2T45: Inverting version of 74LVC2T45 level shifter 0 Locked

    1821 views
    4 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    Non-Inverting Buffer with different input/output voltage 0 Locked

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

    How to select an appropriate level translator? 0 Locked

    2073 views
    3 replies
    Latest over 8 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC8T245: 74LVC8T245 1.8V input driven with 1.5V logic driver 0 Locked

    887 views
    3 replies
    Latest over 8 years ago
    by aozer
  • Not Answered

    Bidirectional translation for SPI at 66MHz w/30pF load 0 Locked

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

    SN74AVC32T245: Meeting timings after voltage level translator for High speed data bus 0 Locked

    607 views
    3 replies
    Latest over 8 years ago
    by aozer
  • Suggested Answer

    SN74221: SN74221: Resolution of the pulse generated 0 Locked

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

    For the txs0102 there is a requirement for VCCA<=VCCB. What happens to the device if this condition is not met? 0 Locked

    730 views
    3 replies
    Latest over 8 years ago
    by JC
  • Answered

    SN74LVCC4245A: Maximum input frequency range 0 Locked

    769 views
    3 replies
    Latest over 8 years ago
    by Karthick M12
  • Suggested Answer

    SN74LVC1G123: SN74LVC1G123 minimum retrigger time calculation 0 Locked

    1147 views
    10 replies
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    by Emrys Maier
  • Suggested Answer

    SN74GTL2014: TI GTL2014 design doubt 0 Locked

    1690 views
    5 replies
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    by Emrys Maier
  • Suggested Answer

    SN74125: OE# pin frequency characteristic of SN74LVC1G125 IC. 0 Locked

    2616 views
    5 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0104: Dose TXB0104 have internal pull up/down? 0 Locked

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

    SN74LVC541A: Failure rate calculation at 30°C 0 Locked

    727 views
    3 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74VMEH22501: ringing 0 Locked

    649 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Discussion

    SN74ACT240: Output Voltage Level & current values at differnt temp Locked

    740 views
    4 replies
    Latest over 8 years ago
    by Joe Stephan
  • Answered

    SN74HC595: Serial Output like NXP 74HC595 0 Locked

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