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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

    SN74AVCH16T245: 1D1IR and 2DIR reference to VCCB compared to VCCA. 0 Locked

    327 views
    3 replies
    Latest over 4 years ago
    by Karan Kotadia
  • Answered

    SN74LVC1G57: Using SN74LVC1G57 for deadtime circuit 0 Locked

    1521 views
    6 replies
    Latest over 4 years ago
    by Jose Sandoval
  • Answered

    TXB0108: High level input is not confirmed 0 Locked

    280 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Not Answered

    [FAQ] What is the typical delay of a logic device in a particular logic family? 0 Locked

    1444 views
    0 replies
    Started over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HCS244-Q1: time dealy 0 Locked

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

    SN74LS540: About output at power-on 0 Locked

    199 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    TXU0104: VOH Specification & Behaviour when Outputs Connected to Damaged Ports 0 Locked

    314 views
    4 replies
    Latest over 4 years ago
    by Bogdan Banik
  • Answered

    SN74AUP1G34: Power on and power off behaviors of output 0 Locked

    657 views
    4 replies
    Latest over 4 years ago
    by user4811888
  • Suggested Answer

    SN74LVC1G123: CMOS output to input of SN74LVC1G123 0 Locked

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

    SN74LVC1G00: K3 vs K6 suffix 0 Locked

    428 views
    3 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74AVC1T45: Operating Power Supply Condition 0 Locked

    231 views
    2 replies
    Latest over 4 years ago
    by Carl Wolfe
  • Suggested Answer

    [FAQ] [H] Simulation Models 0 Locked

    2816 views
    1 reply
    Latest over 4 years ago
    by Michael J Schultis
  • Suggested Answer

    CD74HC4511: ESD data of quality qualification . 0 Locked

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

    TXS02612: TXS02612 schematic questions 0 Locked

    1002 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74AVC8T245: part to part skew 0 Locked

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

    SN74AXC2T245-Q1: Isolating UART signals between MCU and FTDI cable to prevent leakage current 0 Locked

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

    SN74AHC245: Input to Output delay time (tPHL and tPLH) 0 Locked

    1719 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0101: Add on voltage translator LSF0101 for SN74LVC1G123 0 Locked

    1022 views
    18 replies
    Latest over 4 years ago
    by Karan Kotadia
  • Suggested Answer

    TXS0206A: Support SD3.0 to compete with IP4856CX25 0 Locked

    420 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Not Answered

    TXB0108: shoot though current at intermediate input voltage condition to I/O A or B 0 Locked

    170 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
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