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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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View FAQ threads
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  • Answered

    SN74LVC1G123: dV/dt max spec 0 Locked

    622 views
    3 replies
    Latest over 6 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74LVC2G126: Rise- and fall-time, switching speed 0 Locked

    370 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Discussion

    [FAQ] If the OE pin is asserted to maintain Hi-Z at the IO, will it disconnect the internal pull-up resistors in TXS devices? Locked

    2496 views
    0 replies
    Started over 6 years ago
    by ShreyasRao
  • Answered

    TXS0108E-Q1: Max leakage current on A / Port? 0 Locked

    367 views
    2 replies
    Latest over 6 years ago
    by ShreyasRao
  • Suggested Answer

    TXB0102: TXB0102 Driving into another TXB0102 0 Locked

    530 views
    1 reply
    Latest over 6 years ago
    by Karan Kotadia
  • Answered

    SN74LV1T34: Output level 0 Locked

    1884 views
    5 replies
    Latest over 6 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74LVC1G374: Need ibis model for this IC 0 Locked

    749 views
    1 reply
    Latest over 6 years ago
    by Dylan Hubbard
  • Answered

    SN74AUP3G34: SN74AUP3G34DC - Need to know whether the output is push pull 0 Locked

    837 views
    4 replies
    Latest over 6 years ago
    by Ashwin srinivasan
  • Answered

    LSF0204: LSF0204 Enable select & Rpu level 0 Locked

    728 views
    2 replies
    Latest over 6 years ago
    by Hugo Liu
  • Suggested Answer

    CD74AC164: Cascading CD74AC164 0 Locked

    533 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AXCH8T245: data rate for Vcca = 1.8V and Vccb = 3.3V 0 Locked

    1878 views
    9 replies
    Latest over 6 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC1G29: package drawing pin number discrepancy 0 Locked

    658 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC16T245: Looking for similar IC ,but has more bits than SN74LVC16T245 0 Locked

    389 views
    1 reply
    Latest over 6 years ago
    by Karan Kotadia
  • Suggested Answer

    SN74HC164: PCN for 74HC164PW 0 Locked

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  • Answered

    SN74LVC1G07: Connecting NC to GND 0 Locked

    554 views
    1 reply
    Latest over 6 years ago
    by Karan Kotadia
  • Answered

    SN74LV125A-Q1: Thermal pad connection to GND or N/C? 0 Locked

    946 views
    2 replies
    Latest over 6 years ago
    by user5266793
  • Suggested Answer

    SN74AVC4T245-Q1: Output status question 0 Locked

    750 views
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    Latest over 6 years ago
    by Emrys Maier
  • Suggested Answer

    TXS0206: about TXS0206 application 0 Locked

    612 views
    1 reply
    Latest over 6 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC1G74: what is the status of Q and Q# after first power up? pls help check the bellow circult 0 Locked

    1117 views
    2 replies
    Latest over 6 years ago
    by Karan Kotadia
  • Suggested Answer

    Do we have a switch logical device for SIM card? 0 Locked

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