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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 do I configure a monostable multivibrator's inputs for rising/falling edge triggering?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ Logic function table for the SN74LVC1G123 Most monostable multivibrator (MMV) devices have very similar logic tables to…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] With Open-Drain outputs, can I ...use them to shift a logic voltage level? ...connect the outputs directly together? ...force a voltage node to zero?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ The answer to all three questions is "yes" - these are the three primary uses of open-drain outputs on logic devices. Much of this also…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] Can I connect the Cext pin to ground on a monostable multivibrator?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LV221A , SN74LVC1G123 , SN74LV123A , SN74221 , SN74LS221 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ For the majority of MMV devices, y es, the Cext pin can be grounded. The Cext…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How do you determine the output pulse width and the 'K' value for a monostable multivibrator?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ The output pulse width (tw) is determined with the following equation: tw = K * R * C with R := external timing resistor, C := external timing capacitor, K := timing constant…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I terminate an unused channel of a monostable multivibrator (one shot)?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LV221A FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ Unused channels for a logic monostable multivibrator (MMV) such as the SN74LV221A should be terminated such that: (1) All inputs…
    • over 5 years ago
    • Logic
    • Logic forum
  • [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
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  • Answered

    SN74LVC16245A: data rate 0 Locked

    281 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    TXS0108E: TXS0108E 0 Locked

    354 views
    3 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    SN74AVC2T244: ABS MAX current rating / Vabs max on input 0 Locked

    420 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G32: difference between SN74LVC1G32DRY2 and SN74LVC1G32DRYR 0 Locked

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

    SN74AVC2T45-Q1: CAVC2T45TDCURQ1 0 Locked

    365 views
    4 replies
    Latest over 1 year ago
    by Roy Chan
  • Answered

    SN74AUC1G14: Looking for device or scheme of high frequency inverter & buffer 0 Locked

    310 views
    2 replies
    Latest over 1 year ago
    by Hans Zhang
  • Suggested Answer

    SN74LV14A: Maximum driveable current 0 Locked

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

    SN74LS74A: Why was SN74ACT74PWR selected as alternate device for SN74LS74ADBR? 0 Locked

    322 views
    2 replies
    Latest over 1 year ago
    by Kazuya Nakai59
  • Suggested Answer

    CD74HC4046A: need help with reading PC2out with adc 0 Locked

    365 views
    1 reply
    Latest over 1 year ago
    by Connor Lewis
  • Suggested Answer

    SN74LVC16245A: Hot plug and unplug applications 0 Locked

    364 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Answered

    SN74LV1T125: Thermal Information on DBV Package 0 Locked

    266 views
    2 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    TXU0304: "TXU0304" spice model 0 Locked

    337 views
    1 reply
    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVC244A: SN74LVC244ARWPR Thermal Pad connection 0 Locked

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

    SN74LVC2G17: Inquiry regarding device marking of SN74LVC2G17DCKR 0 Locked

    723 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVC574A: Output clamp current 0 Locked

    372 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Answered

    SN74AVC2T245: Input frequency of the OE terminal 0 Locked

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

    TXB0304: Disable condition 0 Locked

    287 views
    1 reply
    Latest over 1 year ago
    by Jack Guan
  • Answered

    SN74HCS32-Q1: Spice model 0 Locked

    452 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Answered

    SN74LV1T32: OR Gate or AND Gate 0 Locked

    476 views
    3 replies
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    SN74HCS21-Q1: Pull up & RC filter at input line of AND gate 0 Locked

    338 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
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