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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 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
  • [FAQ] When will TI End of Life (EOL) or Obsolete a certain logic device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ TI's General Quality Guideline (page 7) describes our official policy on obsoleting a device. This policy is summarized below. TI's Product withdrawal/discontinuance process…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What are the power sequencing requirements for the translation device?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ Some of the TI translators have requirements during normal operation mode to have Vcca <= Vccb ( TXS/ TXB01xx) or Vrefb>= VrefA+0.8V(LSF). However, the TI translation devices do…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between IOFF and VCC isolation? What are the conditions to guarantee it?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ The I OFF specification guarantees the I/O ports are in high impedance whenever either one of the power supply is at pulled to ground (0V) or close to gnd(<100mV as specified for the…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] What should be done with unused I/O pins of the level translator devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ For the TXB family, unused I/O ports are recommended to be tied to GND through a weak pulldown resistors (>=100kohm). For TXS devices, the internal 10kohm pull-ups resistors will…
    • over 6 years ago
    • Logic
    • Logic forum
  • [FAQ] Why is there no PSpice model for a Monostable Multivibrator device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ To make a long post short: MMVs cannot be directly simulated by PSpice because of their direct dependence on external components…
    • over 6 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74HC595: Qa to Qh: Active State 0 Locked

    634 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    CD4011BF 0 Locked

    156 views
    2 replies
    Latest over 4 years ago
    by Viktor TSerkovniouk
  • Suggested Answer

    CD40106B: Transient Current Limitation 0 Locked

    414 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVCH32373A: SN74LVCH32373A 0 Locked

    219 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Not Answered

    TXB0108: I2C at 3.4 MHz? 0 Locked

    778 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AVC16244: Thermal data 0 Locked

    248 views
    1 reply
    Latest over 4 years ago
    by Sebastian Muriel
  • Suggested Answer

    SPI Level-Shift "SN74AXC4T774BQB" 0 Locked

    406 views
    5 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    TXS0104E: TXS0104E TXB0304 TXB0104 0 Locked

    483 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    LSF0101: Up transition levels are not correct 0 Locked

    458 views
    5 replies
    Latest over 4 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVC244A: espi buffer 0 Locked

    1020 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G123: 74LVC1G123DCTRE4 0 Locked

    167 views
    1 reply
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LV1T04: Thermal resistance(theta JC) 0 Locked

    436 views
    5 replies
    Latest over 4 years ago
    by user4704463
  • Answered

    SN74AXC4T774: SN74AXC4T774 - output with pull up resistors. 0 Locked

    566 views
    4 replies
    Latest over 4 years ago
    by Sunset
  • Suggested Answer

    LSF0204D: I3C Demand Consult 0 Locked

    488 views
    3 replies
    Latest over 4 years ago
    by Dylan Hubbard
  • Answered

    SN74AXC4T245: To run the 312.5MHz Clock applicant 0 Locked

    192 views
    1 reply
    Latest over 4 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN54LVCH244A-SP: Need thermal data for SN54LVCH244A-SP 0 Locked

    305 views
    3 replies
    Latest over 4 years ago
    by Sebastian Muriel
  • Answered

    SN74LVC3G34: Maximum current rating for combined three buffer driver 0 Locked

    920 views
    7 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC3G17: Delta ICC current over full input voltage swing 0 Locked

    386 views
    2 replies
    Latest over 4 years ago
    by P Borger
  • Suggested Answer

    SN74AHC541: Just want to know whether SN74AHC541DWR can drive SN74LVC1G11DBVR or not? 0 Locked

    200 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74HCS08: Overlap of switching threshold 0 Locked

    293 views
    1 reply
    Latest over 4 years ago
    by Emrys Maier
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