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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

    SN74AHCT1G14: Difference between SN74* and 74* parts? Proper part number specification for PCB assembly? 0 Locked

    4441 views
    5 replies
    Latest over 4 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC2G07: Glitch Consult 0 Locked

    325 views
    3 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74LVC3G17: Inputs overvoltage tolerant 0 Locked

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

    LSF0204: What will happen if I connect the refB to Enable Pin 0 Locked

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

    SN74LVC16T245: SN74LVC16T245 0 Locked

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

    SN74LVC2G07: Searching TI solution 0 Locked

    253 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
  • Answered

    SN74LVC2G07: Tsu and Th specification consult 0 Locked

    583 views
    6 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    SN74LVCC4245A: SN74LVCC4245 0 Locked

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

    SN74HCS594: Hold time requirement of RCLK w.r.t. nSRCLR 0 Locked

    827 views
    10 replies
    Latest over 4 years ago
    by Emrys Maier
  • Answered

    TXB0101: Recommended pull down and pull up resistors for OE pin or can it be hard shorted? 0 Locked

    420 views
    2 replies
    Latest over 4 years ago
    by Arvind G N
  • Suggested Answer

    Does TI have P2P solution to 74HCT7541? 0 Locked

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

    SN74LVC08A: Without output protection diode 0 Locked

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

    SN74AVC4T245: Difference 74AVC4T245RSVR-NT 0 Locked

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

    Thevenin equivalent of open ended transmission line 0 Locked

    1848 views
    7 replies
    Latest over 4 years ago
    by Jonathan Nerger
  • Answered

    SN74AUP1T34: Looking for alternatives because of allocation 0 Locked

    696 views
    2 replies
    Latest over 4 years ago
    by Steffen Fuchs
  • Suggested Answer

    SN74LVC1G125: About FMEA information of SN74LVC series 0 Locked

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

    SN74AUP1G97: Difference 0 Locked

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

    SN74LV244A: Please tell me about the case where the undershoot is below -0.5V. 0 Locked

    397 views
    3 replies
    Latest over 4 years ago
    by Rami Mooti1
  • Suggested Answer

    SN74HCS72: SN74HCS72 Input Voltage 0 Locked

    350 views
    2 replies
    Latest over 4 years ago
    by Karan Kotadia
  • Not Answered

    SN74HCS138: Using a MSP432 controller to give Vcc to the device 0 Locked

    280 views
    1 reply
    Latest over 4 years ago
    by Rami Mooti1
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