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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

    SN74LVTH244A: Total continuous current through VCC or GND 0 Locked

    1455 views
    3 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0108: Output pull low 0 Locked

    533 views
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    by Emrys Maier
  • Answered

    TXB0104-Q1: The load capacitance 0 Locked

    594 views
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    by Emrys Maier
  • Answered

    SN74LVTH244A: SN74LVTH244A for the unused pins 0 Locked

    624 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Suggested Answer

    Logic family selection 0 Locked

    1242 views
    7 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    TXB0304: B2 Output waveform rising speed gets slow down as the output voltage is closing to VCCB 0 Locked

    868 views
    2 replies
    Latest over 8 years ago
    by ShreyasRao
  • Suggested Answer

    CD74HC4046A: Clarification on CD74HC4046A to replace the reference CD4046BH 0 Locked

    1633 views
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    by Emrys Maier
  • Suggested Answer

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    625 views
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  • Answered

    TXB0108: B port output when VccA/OE is ON and VccB is OFF. 0 Locked

    673 views
    2 replies
    Latest over 8 years ago
    by ShreyasRao
  • Suggested Answer

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    by Joel Giraud
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    What is better for I²S level shifting 0 Locked

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    by Emrys Maier
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    TXS0102: I2C Clock Stretching 0 Locked

    783 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AHCT594: Do you have a minimum 3V power input version of 594? 0 Locked

    808 views
    4 replies
    Latest over 8 years ago
    by Clemens Ladisch
  • Not Answered

    LSF0102: Part A has no output 0 Locked

    769 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Not Answered

    SN74LVC2G04: SN74LVC2G04 Vcc 0 Locked

    824 views
    1 reply
    Latest over 8 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G17: Clarification on datasheet maximum input voltage range 0 Locked

    745 views
    3 replies
    Latest over 8 years ago
    by Clemens Ladisch
  • Suggested Answer

    TINA/Spice/SN74LVC07A: GPIOs driving through a buffer and output of buffer connected to LEDs for verification of HIGH/LOW state 0 Locked

    1938 views
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    by JC Zhu
  • Suggested Answer

    What is One shot model ? 0 Locked

    1836 views
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    Latest over 8 years ago
    by Joaquin Fonseca
  • Not Answered

    TCA9800: Using TCA9800 with push pull outputs ? 0 Locked

    1279 views
    4 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74LVC1G123: SN74LVC1G123 0 Locked

    689 views
    2 replies
    Latest over 8 years ago
    by Ali Masoudi
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