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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] Is it necessary to have pull-down( or pullup) resistor on the OE pin or can I connect it directly to TXS/ TXB supply?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ The OE ( output enable) is over voltage tolerant, high input impedance, active high enable pin for most of the TXS, TXB devices. If the IOs must be in high impedance during power…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] Can I connect the OE pin to Vccb supply pin instead of Vcca for TXS, TXB devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ The OE ( output enable) is active high CMOS high input impedance pin for most of the TXS and TXB devices. The OE is referenced to Vcca supply w.r.t the voltage levels. i.e The Vih…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum output pulse length for a monostable multivibrator?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ There is no official maximum output pulse length for a monostable multivibrator device, but there are practical limits. The…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How stable is the output pulse length of a monostable multivibrator across changes in supply voltage?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ This plot is from the SN74LVC1G123 datasheet. You can see that the "K" value decreases as the supply increases, but it also…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How stable is the output pulse length of a monostable multivibrator across temperature?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ The application report Designing with the SN74LVC1G123 Monostable Multivibrator has some useful information regarding this. Essentially, the timing is primarily determined…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I configure a monostable multivibrator's inputs for rising/falling edge triggering?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ Logic function table for the SN74LVC1G123 Most monostable multivibrator (MMV) devices have very similar logic tables to…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] With Open-Drain outputs, can I ...use them to shift a logic voltage level? ...connect the outputs directly together? ...force a voltage node to zero?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G123 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ The answer to all three questions is "yes" - these are the three primary uses of open-drain outputs on logic devices. Much of this also…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] Can I connect the Cext pin to ground on a monostable multivibrator?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LV221A , SN74LVC1G123 , SN74LV123A , SN74221 , SN74LS221 FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ For the majority of MMV devices, y es, the Cext pin can be grounded. The Cext…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How do you determine the output pulse width and the 'K' value for a monostable multivibrator?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ The output pulse width (tw) is determined with the following equation: tw = K * R * C with R := external timing resistor, C := external timing capacitor, K := timing constant…
    • over 5 years ago
    • Logic
    • Logic forum
  • [FAQ] How do I terminate an unused channel of a monostable multivibrator (one shot)?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LV221A FAQ: Logic and Voltage Translation > Monostable Multivibrators >> Current FAQ Unused channels for a logic monostable multivibrator (MMV) such as the SN74LV221A should be terminated such that: (1) All inputs…
    • over 5 years ago
    • Logic
    • Logic forum
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  • Answered

    SN74LVC244A: Maximum supported data rate 0 Locked

    320 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC1G126: Output of 1G126 when the OE is 0.8V 0 Locked

    628 views
    11 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74121: SN74121D input pin cannot be pulled low by a pull low resistor. 0 Locked

    368 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Not Answered

    SN74ABTH16245: Minimum Pulse Width Tw 0 Locked

    212 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74AUP1G80: Fmax anomaly 0 Locked

    541 views
    7 replies
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

    SN74ALVC164245: Soldering profile s/order # 924515 0 Locked

    246 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0102: one shot mechanism trigger condition 0 Locked

    808 views
    3 replies
    Latest over 2 years ago
    by Jack Guan
  • Answered

    SN74HC02A: Kindly share the TINA simulation module for SN74HC02A 0 Locked

    317 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    SN74LVC244A: high output direct connect to GND 0 Locked

    294 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74AVCH16T245: Bus Hold Function according to the direction 0 Locked

    302 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Answered

    TXU0101: the hysteresis value 0 Locked

    379 views
    1 reply
    Latest over 2 years ago
    by Clemens Ladisch
  • Not Answered

    SN74HCS32-Q1: Request to Functional safety FIT value(SN29500-2) 0 Locked

    549 views
    2 replies
    Latest over 2 years ago
    by An jinyoung
  • Suggested Answer

    SN54S140: FK package dimensions not in the datasheet 0 Locked

    416 views
    2 replies
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

    SN74AHC74Q-Q1: FIT rate for SN74AHC74QPWRQ1 0 Locked

    382 views
    5 replies
    Latest over 2 years ago
    by Albert Xu1
  • Not Answered

    [FAQ] What is the maximum trace length that a logic device can drive? 0 Locked

    2830 views
    0 replies
    Started over 2 years ago
    by Ian Graham
  • Answered

    TXB0302: why TXB0302 can't use for open drain case 0 Locked

    431 views
    5 replies
    Latest over 2 years ago
    by Jack Guan
  • Not Answered

    SN74LV123A: Design of rising edge multivibrator 0 Locked

    393 views
    3 replies
    Latest over 2 years ago
    by Ian Graham
  • Suggested Answer

    TXB0102: voltage level converter for UART data lines 0 Locked

    1287 views
    3 replies
    Latest over 2 years ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LV74A: Is there next gen of SN74LV74A which has better size? 0 Locked

    275 views
    1 reply
    Latest over 2 years ago
    by Emrys Maier
  • Suggested Answer

    LSF0204: LSF0204: Does LSF0204RUTR need a large current to sink? 0 Locked

    692 views
    9 replies
    Latest over 2 years ago
    by Clemens Ladisch
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