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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

    SN74GTL2014: whether we can give voltage to VREF before VCC of SN74GTL2014 0 Locked

    302 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Not Answered

    SN74HCS02-Q1: output oscillation at start up 0 Locked

    405 views
    4 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    CD74HC4050: What is the input current rating for CD74HC4050 device. 0 Locked

    377 views
    2 replies
    Latest over 5 years ago
    by Colin Gillmor
  • Suggested Answer

    LSF0108: LSF0108 0 Locked

    360 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G123: Cext to GND 0 Locked

    550 views
    4 replies
    Latest over 5 years ago
    by Emrys Maier
  • Answered

    Custom Application using OpenVX, Node kernel Validate failed 0 Locked

    684 views
    4 replies
    Latest over 5 years ago
    by Lucas Weaver
  • Not Answered

    TXS0104E: TXS0104 and TXB0104 0 Locked

    605 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    SN74GTL2003: SN74GTL2003 IBIS model 0 Locked

    407 views
    2 replies
    Latest over 5 years ago
    by bryan zheng
  • Answered

    SN74LVC14A: Can Vcc of SN74LVC14A accept 5V? 0 Locked

    416 views
    2 replies
    Latest over 5 years ago
    by Aki Li
  • Answered

    LSF0204: Multiple logic levels really possible? 0 Locked

    599 views
    4 replies
    Latest over 5 years ago
    by Kevin Kachikian1
  • Suggested Answer

    SN74LVC08A: SN74LVC08A --misoperation --when Vin=1.5V 0 Locked

    804 views
    4 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    LSF0108-Q1: How to deal with the unused port 0 Locked

    548 views
    1 reply
    Latest over 5 years ago
    by Albert Xu1
  • Suggested Answer

    TXS0108E: Propagation delay time questions 0 Locked

    358 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74HC157: Will occaisional slow transitions do any damage? 0 Locked

    405 views
    1 reply
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    Spice model 0 Locked

    652 views
    5 replies
    Latest over 5 years ago
    by Aradhyasambhu Satpathy
  • Answered

    SN74LVC8T245: SN74LVC8T245RHLR: A questions about the thermal pad of VQFN - 1 mm footprint. 0 Locked

    606 views
    1 reply
    Latest over 5 years ago
    by Clemens Ladisch
  • Answered

    TXS0108E: TXS0108E - not working as expected. 0 Locked

    3252 views
    4 replies
    Latest over 5 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV1T32: If the part is qualified by AEC-Q100? 0 Locked

    426 views
    4 replies
    Latest over 5 years ago
    by Alpha Ting
  • Suggested Answer

    TXS0102: TXS0102 Power-Up 0 Locked

    500 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Not Answered

    TL431AQDBZRQ1- Texas Part Number 0 Locked

    194 views
    2 replies
    Latest over 5 years ago
    by Marcoo Z
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