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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

    TXS0102: TXS0102 Bidirectional Property 0 Locked

    273 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    CD4081B: Error message in Pspice for TI - ERROR(ORPSIM-15108): subcircuit undefined 0 Locked

    557 views
    4 replies
    Latest over 1 year ago
    by Vladimir Kosel
  • Answered

    TXB0106: For SPI 1.8V to1.2V level shift ,Input 20M,output is 10M or some cycle lost. 0 Locked

    644 views
    11 replies
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    LSF0102: spec check 0 Locked

    597 views
    7 replies
    Latest over 1 year ago
    by Jack Guan
  • Answered

    TXS0102: How to TXS0102 decide push pull or open drain? 0 Locked

    2692 views
    14 replies
    Latest over 1 year ago
    by bb0667
  • Suggested Answer

    TXB0108: Please help to provide the IC power consumption. 0 Locked

    370 views
    1 reply
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    TXB0102: TXS0104E for sim card 0 Locked

    305 views
    1 reply
    Latest over 1 year ago
    by Jack Guan
  • Suggested Answer

    SN74AHCT08: Thermal information for SN74AHCT08PWR 0 Locked

    191 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    SN74AHC14: Input voltage exceed the Vcc rail 0 Locked

    381 views
    8 replies
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    TXV0106: Data rate clarification for RGMII 0 Locked

    277 views
    3 replies
    Latest over 1 year ago
    by Michael Ikwuyum
  • Suggested Answer

    SN74LVC1G04: SN74LVC1G04DCKR Shelf life and advise what test need if material overdate 0 Locked

    329 views
    1 reply
    Latest over 1 year ago
    by Ian Graham
  • Answered

    SN74LV4040A: About SN74LV4040A's thermal information 0 Locked

    203 views
    1 reply
    Latest over 1 year ago
    by Owen Westfall
  • Not Answered

    SN74AHCT1G125: SN74AHCT1G125;Data sheet 0 Locked

    302 views
    1 reply
    Latest over 1 year ago
    by Ian Graham
  • Answered

    SN74LV1T04: Maximum value of VIH and the minimum value of VIL 0 Locked

    371 views
    3 replies
    Latest over 1 year ago
    by Clemens Ladisch
  • Suggested Answer

    SN74HC257A: sn74hc257 0 Locked

    250 views
    1 reply
    Latest over 1 year ago
    by Malcolm Lyn
  • Suggested Answer

    UCC28180: Not getting PWM pulse on 8th pin of UC28180 0 Locked

    269 views
    3 replies
    Latest over 1 year ago
    by Ulrich Goerke
  • Suggested Answer

    SN74AUC74: Does SN74AUC74 support LVCMOS 33 input voltage level? 0 Locked

    270 views
    1 reply
    Latest over 1 year ago
    by Clemens Ladisch
  • Answered

    CD4555B: CD4555BPWR 0 Locked

    216 views
    1 reply
    Latest over 1 year ago
    by Owen Westfall
  • Not Answered

    SN54BCT760: 5962-9093801M2A 0 Locked

    154 views
    1 reply
    Latest over 1 year ago
    by Owen Westfall
  • Answered

    SN74AHC123A: About the usage of leading edge detector 0 Locked

    290 views
    2 replies
    Latest over 1 year ago
    by ziyu liu
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