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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

    SN74LVC2G126: ESD Diodes From Input to Vcc? 0 Locked

    260 views
    1 reply
    Latest over 2 years ago
    by Jack Campbell
  • Answered

    LSF0102: 1.0V<->1.8V transmission. Current consumption 0 Locked

    301 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74HCT125: Max. Junction temperature 0 Locked

    190 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G125: SN74LVC1G125: Can SN74LVC1G125 support 125MHz at 2.5Vcc? 0 Locked

    326 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74ACT244: The output of High Z input 0 Locked

    615 views
    5 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Not Answered

    SN54AHC32: Looking for IBIS model for SN54ABT245A, SN54ABT244, SN54AHC32, SN54AHCT14 0 Locked

    172 views
    0 replies
    Started over 2 years ago
    by raf kowalski
  • Not Answered

    SN54ABT244: Looking for IBIS model for SN54ABT245A, SN54ABT244, SN54AHC32, SN54AHCT14 0 Locked

    161 views
    0 replies
    Started over 2 years ago
    by raf kowalski
  • Not Answered

    SN54ABT245A: Looking for IBIS model for SN54ABT245A, SN54ABT244, SN54AHC32, SN54AHCT14 0 Locked

    174 views
    0 replies
    Started over 2 years ago
    by raf kowalski
  • Answered

    SN74HCT240: Difference between SN74HCT240 and SN74HCT540 0 Locked

    229 views
    1 reply
    Latest over 2 years ago
    by Albert Xu1
  • Not Answered

    CD74HC75: CD74HC75E 0 Locked

    231 views
    3 replies
    Latest over 2 years ago
    by Albert Xu1
  • Suggested Answer

    SN74AUC1G125: Recommend the TI SN74AUP1G125 as an alternative component 0 Locked

    365 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Not Answered

    SN74LVC2G17-EP: IBIS or SPICE model 0 Locked

    204 views
    0 replies
    Started over 2 years ago
    by Renan Santos Adriano
  • Answered

    SN74AXC2T245-Q1: 2input 1output level translator 0 Locked

    421 views
    5 replies
    Latest over 2 years ago
    by Kazuki Kuramochi
  • Answered

    SN74HC257A: About the A suffix 0 Locked

    269 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVCC3245A: About package size 0 Locked

    305 views
    1 reply
    Latest over 2 years ago
    by Swathi D
  • Suggested Answer

    TXB0106-Q1: Regulation Certification Report 0 Locked

    254 views
    1 reply
    Latest over 2 years ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74AUP1T17: Output waveform at power-on 0 Locked

    265 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUP1G07: Max supporting data rate of SN74AUP1G07 0 Locked

    258 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AUC1G32: Abs max rating 0 Locked

    416 views
    5 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LS06:日本語版カタログのデータシート 0 Locked

    472 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
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