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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

    SN74LVC1G11: Output current sinking capability (when Vo>0) 0 Locked

    399 views
    1 reply
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    LSF0204: how to set lowest Vol 0 Locked

    314 views
    1 reply
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    TXB0108: What are the difference between these two packages TXB0108YZPR and YZPR2 ? 0 Locked

    344 views
    1 reply
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    SD card application using SN74AUC244 and SN74AUC2G34 0 Locked

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

    TXB0304: Using TXB0304 with FT2232H for UART level translation 0 Locked

    515 views
    2 replies
    Latest over 5 years ago
    by ShreyasRao
  • Suggested Answer

    SN54HC10-SP: Radiation Tolerance? 0 Locked

    358 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Answered

    WEBENCH® Tools/LSF0101: Requesting for DTQ Package Footprint 0 Locked

    472 views
    4 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Answered

    Looking for single/dual non-inverting buffer 0 Locked

    578 views
    4 replies
    Latest over 5 years ago
    by Chad Crosby
  • Answered

    SN74AUP1T97: Request for thermal resistance Information for Junction-to-case (θJc) for SN74AUP1T97DCKRG4 (DCK package) 0 Locked

    296 views
    1 reply
    Latest over 5 years ago
    by Chad Crosby
  • Answered

    SN74AVC8T245: Propagation Delay Variability at Room Temperature 0 Locked

    535 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    CD4013B: Toggle switch not latching 0 Locked

    2103 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LVC16T245: whether inputs of the device is overvoltage-tolerant 0 Locked

    644 views
    2 replies
    Latest over 5 years ago
    by rege schmidt
  • Answered

    SN74HC148: Junction temperature consult 0 Locked

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

    TXB0104: Schematic Review 0 Locked

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

    Looking for a level translator to translate SWD signals 1.8V <--> 3.3V 0 Locked

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

    LSF0204: MDC/MDIO 1.2V/1.8V Transfer 0 Locked

    625 views
    3 replies
    Latest over 5 years ago
    by Dylan Hubbard
  • Suggested Answer

    SN74LS390: ESD rating 0 Locked

    358 views
    3 replies
    Latest over 5 years ago
    by Chad Crosby
  • Suggested Answer

    LSF0204: Enquiry: Power Consumption 0 Locked

    251 views
    1 reply
    Latest over 5 years ago
    by ShreyasRao
  • Answered

    TXS0104E: What is the maximum drive current for this part 0 Locked

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

    SN74LVC1G07: SN74LVC1G07DCKR details 0 Locked

    407 views
    3 replies
    Latest over 5 years ago
    by Chad Crosby
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