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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] When will TI End of Life (EOL) or Obsolete a certain logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ TI's General Quality Guideline (page 7) describes our official policy on obsoleting a device. This policy is summarized below. TI's Product withdrawal/discontinuance process…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What are the power sequencing requirements for the translation device?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ Some of the TI translators have requirements during normal operation mode to have Vcca <= Vccb ( TXS/ TXB01xx) or Vrefb>= VrefA+0.8V(LSF). However, the TI translation devices do…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between IOFF and VCC isolation? What are the conditions to guarantee it?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The I OFF specification guarantees the I/O ports are in high impedance whenever either one of the power supply is at pulled to ground (0V) or close to gnd(<100mV as specified for the…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What should be done with unused I/O pins of the level translator devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ For the TXB family, unused I/O ports are recommended to be tied to GND through a weak pulldown resistors (>=100kohm). For TXS devices, the internal 10kohm pull-ups resistors will…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Why is there no PSpice model for a Monostable Multivibrator device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ To make a long post short: MMVs cannot be directly simulated by PSpice because of their direct dependence on external components…
    • over 6 years ago
    • Logic
    • Logic forum
  • [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
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  • Answered

    TXS0104E: What is the maximum drive current for this part 0 Locked

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

    SN74LVC1G07: SN74LVC1G07DCKR details 0 Locked

    435 views
    3 replies
    Latest over 5 years ago
    by Chad Crosby
  • Suggested Answer

    SN74LV1T34: SN74LV1T34 details 0 Locked

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

    SN74LVC1G125: SN74LVC1G125 deails regarding 0 Locked

    441 views
    2 replies
    Latest over 5 years ago
    by dharani Balu
  • Answered

    ESD 0 Locked

    362 views
    3 replies
    Latest over 5 years ago
    by Akshay Shinde1
  • Answered

    SN74AUP1T34: Down Shifting Possible? 0 Locked

    333 views
    1 reply
    Latest over 5 years ago
    by ShreyasRao
  • Answered

    SN74AXC8T245EVM: Channel B output level not at VCCB 0 Locked

    494 views
    3 replies
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    SN74LVC16T245: Max Data Rate for 1.8V to 3.3V and 1.8V to 5.0V 0 Locked

    435 views
    3 replies
    Latest over 5 years ago
    by Chad Crosby
  • Suggested Answer

    LSF0204: Unused A and B side pins termination in LSF0204 0 Locked

    461 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Suggested Answer

    SN54ABT541: Alternative with higher Voh 0 Locked

    319 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    TXB0104: Direct Connection of Level translators 0 Locked

    792 views
    8 replies
    Latest over 5 years ago
    by Jejomar Ildefonso
  • Suggested Answer

    SN74LVC1G14-Q1: Clipped sine wave into Square wave 0 Locked

    4252 views
    12 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0102: can LSF0102 be used for SPI interface? 0 Locked

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

    SN74HC164: Query on definition of Timing Requirement 0 Locked

    334 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN54AC00-DIE: SN54AC00-DIE 0 Locked

    413 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Answered

    TXS0102: I2C interface to only 2 slave devices 0 Locked

    477 views
    3 replies
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    JANB54LS00W 0 Locked

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

    LSF0108: Low side power supply off state 0 Locked

    379 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    TICPAL22V10Z-25C: PAL22V10Z does this item contain memory? IF so how much and what kind? 0 Locked

    303 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E: A-port pins always high 0 Locked

    433 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
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