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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

    SN74LV1T126: higher current alternative 0 Locked

    326 views
    3 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74AVC16T245: Output Resistor necessary? 0 Locked

    404 views
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    by Haje
  • Answered

    SN74LVC2G06: DCKR 0 Locked

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    2 replies
    Latest over 5 years ago
    by User31000
  • Suggested Answer

    TXS0108E: output keep low when disable (OE=low) 0 Locked

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    SN74AHCT08: Max Junction Temperature for Package SOIC - D 0 Locked

    303 views
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    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74AXC8T245-Q1: Ground pad connectivity 0 Locked

    315 views
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    by Karan Kotadia
  • Answered

    TXS0102: Data rate 0 Locked

    335 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC1G74: We need to convert momentary push button switch to toggle switch & Its application is Power On Off Switch 0 Locked

    2772 views
    5 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC8T245: What happens if OE pin is unconnected on the SN74LVC8T245DBQR? 0 Locked

    322 views
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    by Karan Kotadia
  • Suggested Answer

    SN74HC245: Does voltage of inputs exceed the power supply damage the IC? 0 Locked

    1099 views
    2 replies
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  • Answered

    TXB0104-Q1: Connection 0 Locked

    193 views
    1 reply
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    by Clemens Ladisch
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    SN74ALVC245: Thermal pad connection 0 Locked

    288 views
    1 reply
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    by Karan Kotadia
  • Answered

    CD74HC4511: Total Current Drive Capability 0 Locked

    345 views
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    Latest over 5 years ago
    by Fred Doe
  • Suggested Answer

    SN74AXC8T245-Q1: What is the output driver rise time? 0 Locked

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    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74HC164: Power consumption calculation on worst case 0 Locked

    346 views
    1 reply
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    by Clemens Ladisch
  • Answered

    SN7416: Logic forum 0 Locked

    552 views
    4 replies
    Latest over 5 years ago
    by geet_jain
  • Answered

    SN74AXCH8T245: Ethernet applications 0 Locked

    467 views
    3 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G374: Issue with HSPICE Symbol 0 Locked

    1465 views
    5 replies
    Latest over 5 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74LVT245B: Ensuring high-impedance state during start-up, power up 0 Locked

    1517 views
    5 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    TXS4558: About VSIM* at Vcc=0 and VIL/VIH on SIM*I/O 0 Locked

    1350 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
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