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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

    SN74LXC1T14-Q1: Need to Have 5V Square Wave from 0.8Vpp Clipped Sine Wave TCXO Source 0 Locked

    901 views
    8 replies
    Latest over 1 year ago
    by Wira Aditama
  • Suggested Answer

    LSF0108: TXS0108 & LSF0108 Diff? 0 Locked

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    Latest over 1 year ago
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    SN74LVC1G11: Oputput state when unpowered 0 Locked

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    Latest over 1 year ago
    by Clemens Ladisch
  • Discussion

    SN74AXC4T774-Q1: SN74AXC4T774-Q1 is Driving MISO line to LOW Locked

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

    SN74AUP1G125: Max V_OL for Vcc=1.1V? 0 Locked

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

    SN74LVC1G00: About SN74LVC1G00 failure mode 0 Locked

    340 views
    1 reply
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    by Clemens Ladisch
  • Answered

    TXB0108: Issue with noisy output 0 Locked

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    264 views
    3 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74LS125A: Difference between "NS" and "NSR" 0 Locked

    401 views
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    by Malcolm Lyn
  • Answered

    SN74LVC1G08: SN74LVC1G08DBVT & SN74LVC1G08DBVR 0 Locked

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

    SN74HCS574: Clock frequency at 3.3V 0 Locked

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

    CD4050B: Consumption 0 Locked

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  • Answered

    SN74LV86A: About over shoot 0 Locked

    393 views
    7 replies
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    by Malcolm Lyn
  • Answered

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    529 views
    1 reply
    Latest over 1 year ago
    by Albert Xu1
  • Answered

    TXS0104E-Q1: I2C Hub Function 0 Locked

    561 views
    8 replies
    Latest over 1 year ago
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  • Suggested Answer

    SN74LVC2T45: SN74LVC2T45YZPR 0 Locked

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    Latest over 1 year ago
    by Michael Ikwuyum
  • Answered

    SN74LVCH244A: How to avoid external pull-down resistors 0 Locked

    407 views
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    Latest over 1 year ago
    by franziskus
  • Answered

    UART Hub Solution 0 Locked

    489 views
    4 replies
    Latest over 1 year ago
    by Evan Wang
  • Suggested Answer

    SN74LVC1G32: Fail safe input pins 0 Locked

    409 views
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