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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

    The replacement inverter IC for SN74LVC1G97 0 Locked

    2725 views
    12 replies
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    TXS02612: Clarification on the VILmax and VIHmin spec 0 Locked

    618 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    SN74LVTH244A: SN74LVTH244A equivalent without Bus Hold 0 Locked

    591 views
    1 reply
    Latest over 8 years ago
    by Emrys Maier
  • Suggested Answer

    Where to find datasheet for historical SN96912 ? Is there an equivalent ? 0 Locked

    1907 views
    3 replies
    Latest over 8 years ago
    by Ed Walker
  • Answered

    TXS0108E: Clarification on the VILmax and VIHmin spec’ 0 Locked

    1205 views
    1 reply
    Latest over 8 years ago
    by aozer
  • Answered

    SN74AVC8T245: SN74AVC8T245RHL / Thermal pad can be connected to GND? 0 Locked

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

    LSF0108: LSF010x Layout 0 Locked

    1262 views
    6 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AUP1G125: Maybe typo of datasheet (Simplified Schematic) 0 Locked

    716 views
    3 replies
    Latest over 8 years ago
    by Takumi Suzuki1
  • Answered

    SN74LVC1G123: Use SN74LVC1G123 to generate constant On-time pulse with external triggered square wave signal 0 Locked

    1226 views
    7 replies
    Latest over 8 years ago
    by Emrys Maier
  • Answered

    SN74AVC2T244: Looking for dual bit 24MHz LVCMOS Clock level translator 0 Locked

    645 views
    2 replies
    Latest over 8 years ago
    by aozer
  • Not Answered

    TXB0304: about TXB0304 application 0 Locked

    800 views
    1 reply
    Latest over 8 years ago
    by aozer
  • Answered

    SN74AHCT1G08: Required VIH & VIL values for SN74AHCT1G08 at TA = –40°C to 125°C. 0 Locked

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

    Logic IC required 0 Locked

    1452 views
    9 replies
    Latest over 8 years ago
    by Aleksandras_Kaknevicius
  • Suggested Answer

    TXS0102: TXS0102 library for Altium designer 0 Locked

    842 views
    2 replies
    Latest over 8 years ago
    by Michele galliano
  • Not Answered

    SN74AUC1G14: schmmit for 1G to 6G MHz extenion 0 Locked

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

    SN74AHC1G09: VOL voltage level of SN74AHC1G09 for Different IOL other than test condition mentioned in datasheet 0 Locked

    618 views
    5 replies
    Latest over 8 years ago
    by Nilesh Khupase
  • Answered

    SN74LVC14A: Vcc=5V (Figure4) 0 Locked

    636 views
    3 replies
    Latest over 8 years ago
    by cafain
  • Not Answered

    SN74AVC4T774: SN74AVC4T774 0 Locked

    530 views
    1 reply
    Latest over 8 years ago
    by aozer
  • Suggested Answer

    SN74LVC2G08: Land Pattern for DCT (R-PDSO-G8) 0 Locked

    2565 views
    3 replies
    Latest over 8 years ago
    by Michael J Schultis
  • Answered

    CD4046B: CD4046B VCO calculation problem 0 Locked

    6590 views
    4 replies
    Latest over 8 years ago
    by Michael J Schultis
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