https://e2e.ti.com/support/logic-group/logic/Products covered in this section are Gates, Little Logic, and Speciality Logic. To post a question click New Post.en-USTelligent Community 13https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645798/txs0102-requesting-alternative-for-txs0102-with-higher-capacitive-load-driving-capabilityThu, 14 May 2026 08:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0d7fdf95-73b1-45ea-9059-b69263c1905fYuxi Liu(Tony)Part Number: TXS0102 Hi Team, We have a customer currently using the TXS0102 voltage-level translator for I2C and UART protocols. The customer is experiencing waveform distortion in their application due to the following constraints: Long trace lengths leading to high parasitic capacitance. Weak driving capability from the MCU side. The TXS0102's edge rate accelerators are insufficient to maintain signal integrity under these conditions. Could you please recommend a pin-to-pin or functional alternative that supports both I2C and UART but offers stronger capacitive load driving capability ? Best regards, Tony LiuTXS0102https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644920/txs0108e-txs0108epwr-marking/6344926Thu, 14 May 2026 06:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:03d9f159-9104-402a-8f0b-13f0d019184fJack BarretHi Jack, We'll be waiting, thank you! Best ragards, Jack Barrethttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645747/sn74lvc07a-output-status-when-vcc-is-offThu, 14 May 2026 06:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1520b340-fff1-43d8-9019-8323f079dfe2Liston D SouzaPart Number: SN74LVC07A Dear Team, I would like to confirm the output behavior of the SN74LVC07A open-drain buffer under power-off conditions. Specifically, what will be the state of the output when VCC is not powered (VCC = 0 V or OFF)? Will the output be: Logic LOW High impedance (floating) Or still behave as a valid open-drain output state? Kindly clarify the expected behavior under this condition for proper system-level design consideration. Regards, ListonSN74LVC07Ahttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645703/pspice-for-ti-behaviour-of-sn74lvc2g74dctrThu, 14 May 2026 03:54:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a7d17105-1fb7-432f-80d5-d0c742f4aa6bsujit guptaPart Number: PSPICE-FOR-TI Hi team, could you please provide me the .lib file for SN74LVC2G74DCTR. and if no, can you help me in simulating this SN74LVC2G74DCTR in PSPICE-FOR-TI , to know its behaviour. Thanks and regards, sujitPSPICE-FOR-TIhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644568/lsf0108-q1-inquiry-regarding-vref-and-pull-up-voltage-configuration-for-lsf0108qpwrq1/6344467Wed, 13 May 2026 22:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e98a370c-b9b8-4a17-a897-0067a7247567Jack GuanHi Virali, Thank you for bringing this to my attention, I will feedback this to my team. Regards, Jackhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645044/sn54sc6t14-sep-sn54sc6t14-sep-set-report/6344265Wed, 13 May 2026 20:04:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7534a105-10e0-4604-8df5-f57d40c2928dJoshua SalinasHello Torbjørn, According to our product engineer the answer is yes, we can expect SET-free up to 43 MeV. Regards, Joshhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645048/74act16541-missing-spice-files-for-multiple-parts/6344111Wed, 13 May 2026 17:58:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:7e902a7f-1a23-432c-9d4f-3351e25caf0cMalcolm LynNo problem, just let me know what the devices are and I can get you the spice files.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644920/txs0108e-txs0108epwr-marking/6343866Wed, 13 May 2026 15:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ce97db19-df1d-4ae2-a9f8-f4aeb1a959a2Jack GuanHi Jack, Let me get back to you on this one. Regards, Jackhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645388/tps2492-tps2492pwrWed, 13 May 2026 09:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b04bd563-f2ec-41c8-8197-de64f733e89cAkshata MPart Number: TPS2492 Hi, VIH and VIL values for the EN pin of TPS2492PWTPS2492Wireless Infrastructurehttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644931/sn74hcs74-q1-function-table-condition-6/6343160Wed, 13 May 2026 07:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:83179b27-d670-4bf0-af55-9109f59f8c69Clemens LadischIt's random. There might be slight manufacturing variations that make one or the other state more likely, but there is no guarantee.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645217/sn74hc139a-inquiry-regarding-sn74hc139ansr-datasheet-and-comparison/6343156Wed, 13 May 2026 07:13:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5eea8811-a31e-46d6-8d59-e90e26ad00e4Clemens LadischDevices with A suffix are identical; see [FAQ] What is the difference between the SN74HCxx and the SN74HCxxA? The SN74HCS139 has better propagation delays, but is not available in the NS package. Consider the SN74AHC139‍NSR; the major difference is that it has overvoltage-tolerant inputs, i.e., it would not be possible to clamp high input voltages with just a series resistor.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644568/lsf0108-q1-inquiry-regarding-vref-and-pull-up-voltage-configuration-for-lsf0108qpwrq1/6342956Wed, 13 May 2026 04:18:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ba7bca43-5ead-40db-83b8-01f648c92b60virali ChhagHi Clemens, If this is not referenced from the LSF0108-Q1 package, it will be either an issue or linked from both packages. [quote userid="96787" url="~/support/logic-group/logic/f/logic-forum/1644568/lsf0108-q1-inquiry-regarding-vref-and-pull-up-voltage-configuration-for-lsf0108qpwrq1/6341475"](These application reports are linked from the LSF0108 product page, but not from the LSF0108-Q1 product page.)[/quote] Regards, Viralihttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1644931/sn74hcs74-q1-function-table-condition-6/6342841Wed, 13 May 2026 02:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e05445ac-b91e-49a8-ae30-437f514f6a15Prathmesh KulkarniAgree. But for same condition 6 on 2 channels simultaneously during fresh power on, why the output differs for channel 1(Q':H) and channel 2(Q':L)?https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645217/sn74hc139a-inquiry-regarding-sn74hc139ansr-datasheet-and-comparisonWed, 13 May 2026 02:38:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:1343c0c0-9117-434c-8759-de926ccf49d8hisayoshi nojimaPart Number: SN74HC139A Other Parts Discussed in Thread: SN74HCS139 , SN74AHC139 Dear Texas Instruments Team Regarding the Toshiba decoder IC TC74HC139AF (TB E) , SN74HC139NS was proposed as an alternative. However, we have received feedback from our customer stating that the propagation delay does not match, and therefore it is not suitable. The customer has asked whether SN74HC139ANSR would have the same propagation delay as TC74HC139AF (TB E) , and whether it is completely identical in terms of package and electrical characteristics. Unfortunately, we do not have access to the datasheet for SN74HC139ANSR , and therefore we are unable to compare its specifications with the Toshiba product. We would appreciate your support with the following: Could you please provide the datasheet for SN74HC139ANSR ? If the datasheet is not available, could you provide details on the differences between SN74HC139NS and SN74HC139ANSR , including propagation delay? Thank you for your assistance. Best regards, Hisayoshi Nojima(Nippon-seiki.co.jp)SN74AHC139SN74HC139ASN74HCS139https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645048/74act16541-missing-spice-files-for-multiple-parts/6342427Tue, 12 May 2026 19:42:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:352da5f2-8e2e-4d1a-8be8-fa2db69472dfKaleb KohlhaseI am currently asking again. Hopefully they will respond, but it has been waiting for some time because I couldn't figure out which Forum "form" to use. I apologize in advance.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645048/74act16541-missing-spice-files-for-multiple-parts/6342418Tue, 12 May 2026 19:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:994c8f86-8b89-4fda-a536-b62ae968fac3Malcolm LynThat link works, I was able to search up some of the literature numbers and it does appear we have SPICE files for these devices on the backend. I'm not sure what happened, we probably updated our website or something and at some point these files stopped being linked on the product page. What devices does he want SPICE files for specifically? If he only wants specific ones it would help if I knew which ones just so I don't have to individually find and download every single file. Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645048/74act16541-missing-spice-files-for-multiple-parts/6342407Tue, 12 May 2026 19:25:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:94ff4b9c-429d-47e6-b8e0-dc8cef25f6b9Kaleb KohlhaseDoes this link work? Click here It's just a text file that gives a bunch of legacy parts and "descriptions of the spice files." It's a TI link, so it would seem like texas instruments had these on hand at one point. I'm wondering if his software uses an old link setup that has deprecated information now.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645152/sn74lv14b-ep-qual-data-for-the-sn74lv14bmpwrep/6342406Tue, 12 May 2026 19:23:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:432bd11f-0e77-4a5c-9f33-48eabc5a32b2Malcolm LynHi Chris, I can't find any qualification report for the B device, and we don't have any comparison data I'm aware of showing how B performs to A. We've also received the question over email, where I've forwarded it to a couple of team members who might know who is responsible for generating these qualification reports and can help verify whether or not we have data available. Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645048/74act16541-missing-spice-files-for-multiple-parts/6342397Tue, 12 May 2026 19:15:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:6ca7e8b6-795f-4e76-8f37-7d246378fa2aMalcolm LynHi Kaleb, The link you provided doesn't work. For legacy devices like the 74ACT, we won't have any simulation files (I don't believe that we ever did). I'm not sure about the Webench Power Designer question. I am not familiar with that tool. I also am not familiar with the distinction between "average" vs. "unencrypted" models, maybe that's a question specific to the Webench platform. The majority of our models in Logic are unencrypted, although we do have some encrypted models intended for use on HSPICE platforms. Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1645044/sn54sc6t14-sep-sn54sc6t14-sep-set-report/6342340Tue, 12 May 2026 18:28:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:101415cf-e71b-439d-9c5b-0d211d4d7cccJoshua SalinasHello Torbjørn, Let me ask our team if we can expect SET-free up to 43 MeVcm2/mg for this part. Regards, Josh