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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

    SN74LVT244B: Supports the SN74LVT244B IBIS model in QFN package 0 Locked

    266 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    CD74HCT174: Clarification on Voltage level 0 Locked

    189 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HCS11: Regarding 5V signals when VCC = 3.3V 0 Locked

    293 views
    2 replies
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LV125A: SN74LVC125A part differences 0 Locked

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

    SN74LXCH8T245: Data rate in 25C temperature 0 Locked

    343 views
    5 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVT244B: BSDL File 0 Locked

    331 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Suggested Answer

    TXB0104: Leave OE connection floating? 0 Locked

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

    TXS0102: Multiple TXS0102s 0 Locked

    377 views
    3 replies
    Latest over 3 years ago
    by Dylan Hubbard
  • Answered

    SN74LVC1G99-Q1: OE Bar Pulled High 0 Locked

    267 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Not Answered

    SN74AVC4T245: high level output with low level input 0 Locked

    208 views
    1 reply
    Latest over 3 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN54LS240: difference in part number 0 Locked

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

    SN74ABT125: Maximum output current for the per channel. 0 Locked

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

    SN74LVC540A: SN74LVC540A : Specification for Iol, Ioh 0 Locked

    524 views
    1 reply
    Latest over 3 years ago
    by Albert Xu1
  • Answered

    TXB0101: TXB0101 and TXB0101 in series 0 Locked

    364 views
    3 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV165A: P2P Device Consult 0 Locked

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

    SN74AVC4T774: Analog & Digital GND Separation 0 Locked

    252 views
    1 reply
    Latest over 3 years ago
    by Clemens Ladisch
  • Not Answered

    TXS0108E: Can this be used for I2S? 1.8V to 3.3V? 0 Locked

    237 views
    3 replies
    Latest over 3 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0102: Pin 8 and pin 1 signal crosstalk problem 0 Locked

    383 views
    1 reply
    Latest over 3 years ago
    by Emrys Maier
  • Suggested Answer

    SN74HCS4075: SN74HCS4075 0 Locked

    329 views
    2 replies
    Latest over 3 years ago
    by Mamzi Ghasemi
  • Suggested Answer

    SN74LVC1G97-Q1: Thermal data 0 Locked

    288 views
    3 replies
    Latest over 3 years ago
    by Albert Xu1
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