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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] How does a monostable multivibrator (one shot) work?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ The above functional block diagram shows generally how a monostable multivibrator (MMV, or one-shot) works. Not all of them have every part shown, but this is the most common…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What's the difference between TTL and 5V CMOS logic?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ It's very common for people to refer to "TTL logic" and to actually mean "5V logic" -- but how are they different? The key difference is in the input and output voltages. This graphic…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference in timing between gates in the same device? How much skew is expected within a given logic device? What is the part-to-part skew?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Timing Parameters >> Current FAQ The difference in delay between the individual channels on an individual part is referred to as channel-to-channel skew or output skew. This is typically not covered as a datasheet…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between the SN74HCxx and the SN74HCxxA?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN7400 , SN74LS00 FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The High-speed CMOS (HC) logic family was created as a direct replacement for older bipolar junction transistor based transistor…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What method is best used for estimating specification values between those given in the datasheet?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ The most common example of this question comes from the fact that Standard Logic devices are specified at 1.65V, 3V, and 4.5V, however most engineers use our devices at 1.8V, 3.3V…
    • over 6 years ago
    • Logic
    • Logic forum
  • [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
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  • Answered

    SN74LVC1G125: p2p replacement 0 Locked

    263 views
    2 replies
    Latest over 3 years ago
    by Emrys Maier
  • Answered

    SN74HC14: Looking For MTBF/FIT Data That's Not Already Available 0 Locked

    297 views
    1 reply
    Latest over 3 years ago
    by Owen Westfall
  • Answered

    SN74LVC1G125: LVC1G125 vs LVC1T45 0 Locked

    241 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1T45: SN74LVC1T45-Q1 pull up resistor on DIR pins. 0 Locked

    491 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC2G157: video formats support 0 Locked

    490 views
    2 replies
    Latest over 3 years ago
    by ami weill
  • Suggested Answer

    SN74AHCT1G126-Q1: Last Q meaning CAHCT1G126QDCKRG4Q 0 Locked

    305 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G123: Package drawing missing some dimensions 0 Locked

    273 views
    2 replies
    Latest over 3 years ago
    by William Mackin
  • Suggested Answer

    SN74AHCT14: temperature specification inconsistency in datasheet 0 Locked

    413 views
    3 replies
    Latest over 3 years ago
    by Owen Westfall
  • Suggested Answer

    TXB0108: Level Shifter accidentally driving input signal on "A" side 0 Locked

    381 views
    2 replies
    Latest over 3 years ago
    by Reed Smoot
  • Suggested Answer

    SN74LVC1GU04: Δt/Δv requirement for input 0 Locked

    459 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Answered

    LSF0108-Q1: VREF_B decoupling capacitor size 0 Locked

    416 views
    5 replies
    Latest over 3 years ago
    by Michael Ikwuyum
  • Suggested Answer

    TXS0102: Need few information about the part mentioned 0 Locked

    206 views
    1 reply
    Latest over 3 years ago
    by Michael Ikwuyum
  • Answered

    TXB0104: Additional PU limitations? 0 Locked

    423 views
    4 replies
    Latest over 3 years ago
    by Michael Ikwuyum
  • Answered

    SN74AVC4T774: SN74AVC4T774 unused and DIR pins implementation 0 Locked

    358 views
    3 replies
    Latest over 3 years ago
    by Reed Smoot
  • Suggested Answer

    SN74LVC1G11: Need few information about the part mentioned 0 Locked

    225 views
    1 reply
    Latest over 3 years ago
    by Owen Westfall
  • Suggested Answer

    SN74LVC1G08: Need few information about the part mentioned 0 Locked

    272 views
    1 reply
    Latest over 3 years ago
    by Owen Westfall
  • Answered

    SN74LVC1G125: CAD/CAE Symbol - Footprint for package X2SON (DPW) does not match the part. 0 Locked

    333 views
    1 reply
    Latest over 3 years ago
    by Owen Westfall
  • Answered

    TXB0104-Q1: do we have Functional Safety FIT Rate, FMD and Pin FMA document for it? 0 Locked

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

    SN74LVC1G11-EP: Output Voltage Drop vs Current Curve for PWM DAC 0 Locked

    303 views
    4 replies
    Latest over 3 years ago
    by Caleb Olson
  • Answered

    CD40106B: BE Suffix 0 Locked

    243 views
    1 reply
    Latest over 3 years ago
    by Sebastian Muriel
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