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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

    TXS02612: SDIO waveform issue on CLKB1 pin 0 Locked

    758 views
    4 replies
    Latest over 1 year ago
    by Stefano Asiri
  • Answered

    CD4504B: Minimum Vcc voltage 0 Locked

    324 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74LV1T08: spec check 0 Locked

    505 views
    3 replies
    Latest over 1 year ago
    by Owen Westfall
  • Suggested Answer

    SN74LVC07A-Q1: Confirm AEC Standard 0 Locked

    329 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AHC74: Max Junction Temp 0 Locked

    271 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74AVC1T45: does this part have internal pull high at pin 3 and 4 0 Locked

    361 views
    3 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74AUP1T17: Max Junction Temp 0 Locked

    290 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74HC126: Regarding specs of VIH/L and VOH/L 0 Locked

    249 views
    3 replies
    Latest over 1 year ago
    by Albert Xu1
  • Suggested Answer

    SN74LVC14A: Can it be operated with a 5V interface? 0 Locked

    408 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Not Answered

    [FAQ] How can I level shift up to 30 V? 0 Locked

    861 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Not Answered

    [FAQ] What is the VIH / VIL required for a Schmitt-Trigger device? 0 Locked

    1375 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Not Answered

    [FAQ] How can I choose a high drive strength device? 0 Locked

    1022 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Not Answered

    [FAQ] TXB0304 oscillates but TXB0104 works, why? 0 Locked

    871 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Not Answered

    [FAQ] How can I mitigate TXB / TXS oscillation concerns? 0 Locked

    926 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74LVC1G123: SN74LVC1G123 and the CD74HCT4538E: Recommendations to improve the design of highly reliable circuits using SN74LVC1G123 and CD74HCT4538E components. 0 Locked

    468 views
    5 replies
    Latest over 1 year ago
    by Ian Graham
  • Not Answered

    [FAQ] Can I estimate appropriate dampening resistor value for level-shifter outputs? 0 Locked

    1757 views
    0 replies
    Started over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    TXS0102-Q1: OE level selection consultation 0 Locked

    357 views
    2 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74AVC4T774: SN74AVC4T774PWR max cap load 0 Locked

    314 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0101: TXS0101 - IBIS model Issue 0 Locked

    506 views
    2 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74LVC1T45: specification for tri-state appears incomplete 0 Locked

    371 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
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