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/1642365/sn54ac00-sp-issue-with-ibis-model-at-2-5v/6335288Wed, 06 May 2026 19:30:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:9b82e27a-ae9a-4dbf-81bf-9438a45922f5Lang Trinhe2e.ti.com/.../sn54ac00w_5F00_sp_5F00_2V5_5F00_3V3_5F00_5V.ibshttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642365/sn54ac00-sp-issue-with-ibis-model-at-2-5v/6335230Wed, 06 May 2026 18:40:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8ff9c710-4486-4513-bfb4-e8a8b737abd8Malcolm LynHi Lang, You can click the insert button and then the tab that says "image/video/file": Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642939/sn74lvc1g125-spec-questions-and-alternative-recommendation/6335170Wed, 06 May 2026 17:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f7b0c451-3191-4ceb-9a70-a372ddac794aIan GrahamHi Allan, The limit applies to all inputs. /OE is an input.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642939/sn74lvc1g125-spec-questions-and-alternative-recommendation/6335082Wed, 06 May 2026 16:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:717ecb13-3ff1-4db7-a01b-94f6d3ebc222Allan Fan[quote userid="96787" url="~/support/logic-group/logic/f/logic-forum/1642939/sn74lvc1g125-spec-questions-and-alternative-recommendation/6335056"]1. The Δt/Δv limit applies to all inputs. Exceeding it can damage the device.[/quote] does it include /OE, right?https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1643119/sn74lvc1g17-question-about-fan-out-capability/6335068Wed, 06 May 2026 16:37:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:92dc8cda-5cb4-4d78-834b-72235f706f0aClemens LadischAt 1.8 V, the drive strength of an LVC output is 4 mA. The leakage current of an LVC input is less than 5 µA. The capacitance of 25 inputs is about 112 pF; add to that the trace capacitances. You need a resistor to limit the output current to a safe value. With Schmitt-trigger inputs, the slow signal edges will not be a problem.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642939/sn74lvc1g125-spec-questions-and-alternative-recommendation/6335056Wed, 06 May 2026 16:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:991451c6-5cd9-4506-be46-b30baf98cb99Clemens Ladisch1. The Δt/Δv limit applies to all inputs. Exceeding it can damage the device. 2. There is no P2P replacement; the nearest is the SN74LVC1G99.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642903/sn74lvc157a-sn74lvc-157ad-unable-to-find-junction-temperature-in-datasheet/6335023Wed, 06 May 2026 16:17:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:98ef232a-338a-4e4b-85e9-47288e736f0dClemens LadischSee [FAQ] What is the maximum junction temperature (TJMAX) for a device?https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642806/cd74hc14-differences-between-parts-marked-with-ti-symbol-or-ti-text/6335018Wed, 06 May 2026 16:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0b6f3605-bb00-47ce-8ad1-17c32c6448e6Clemens LadischThe dies were completely changed during the conversion to 300 mm wafers. The guaranteed datasheet parameters have not changed. It is likely that your circuit tries to exceed these parameters. Please show an oscilloscope trace of the input signals and the wrong output signal.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1643119/sn74lvc1g17-question-about-fan-out-capabilityWed, 06 May 2026 14:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:4f0c6e66-a0a0-4ceb-b916-b143df0940beBenjamin CuebasPart Number: SN74LVC1G17 Fan-out capability is not directly acknowledged in the SN74LVC1G17 datasheet. I am working on a project where I want to use an SN74LVC1G17 buffer with a VCC of 1.8 V in a 25°C environment. The goal is to use only one SN74LVC1G17 buffer to drive the inputs of 25 SN74LVC1G17 buffers. The input pins of all 25 buffers are wired together. One current‑limiting resistor of a few hundred ohms can be placed on the output of the driving buffer to reduce ringing. The highest data rate required is only 8 kbps. Are there any issues that could arise from this configuration? Will one SN74LVC1G17 be suitable to drive all 25?SN74LVC1G17https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642939/sn74lvc1g125-spec-questions-and-alternative-recommendationWed, 06 May 2026 08:47:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3384e0de-1247-4a07-88ed-0fe6e5ed478aAllan FanPart Number: SN74LVC1G125 Other Parts Discussed in Thread: SN74LVC1G99 Hi experts, Customer used SN74LVC1G125DCKR and has some questions. To delay the power on/enable timing, they implemented an RC delay on the Enable pin. Since this is a standard CMOS device, when the input voltage is below Vih in the undefined region, the buffer state becomes indeterminate, potentially toggling unexpectedly. Their RC delay is as long as 1 second . do you see any risks associated with this application? 1.1 The datasheet specifies a maximum Delta t/Delta v of 20 ns/V . Could you explain this requirement? Does it also apply to the ENABLE pin? Are there any TI pin2pin alternatives that feature a Schmitt-trigger on the enable pin? BR, Allanbuilding automationSN74LVC1G99SN74LVC1G125https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642903/sn74lvc157a-sn74lvc-157ad-unable-to-find-junction-temperature-in-datasheetWed, 06 May 2026 07:45:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:5994834b-b519-466a-b4e3-46628f5ced0dAbhilasha VermaPart Number: SN74LVC157A Hi Team, I am Unable to find the Tj Juction temprature condition under datasheet for below mentioned IC Part Number : SN74LVC157AD Description : QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS Best Regards, Abhilasha VermaSN74LVC157Ahttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642806/cd74hc14-differences-between-parts-marked-with-ti-symbol-or-ti-textWed, 06 May 2026 02:45:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:faba6cc2-f2f8-4490-b6fe-f766aa78c57aSteve MillerPart Number: CD74HC14 Experiencing performance differences between parts marked with the TI symbol and TI text. What are the differences between parts, e.g., manufacturing site, revision, etc? TI symbol parts with no issues: Part Number Markings CD74HC14M96 23CH5FK-G4-HC14M CD74HC14MT 01C1P4K -G4-HC14M CD74HC14MTG4 26AZN2K-G4-HC14M CD74HC14MG4 28C3YTK-64-HC14M TI text (no symbol) parts with issues: CD74HC14M96 TI-58ADHFM-HC14M SN74HC14DR TI-54CEDERK-HC14 Thanks for your support.CD74HC14https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642365/sn54ac00-sp-issue-with-ibis-model-at-2-5v/6333641Tue, 05 May 2026 20:14:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ca90bc6a-041a-4568-be88-a540f86aa23dLang TrinhIs it ok for me to paste the model as text here? I'm not seeing a way to attach a file.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642510/sn74lvc1g17-to-ti-rd-customer-team-please-confirm-picture-1-2-sample-specification-fm-hanpin-procurement-team/6333510Tue, 05 May 2026 18:01:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:3e37e2b5-7676-4da7-b9e7-9543854c5419Malcolm LynHi Cliff, I can't really tell anything from these photos. Could you share the shipping label? Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642365/sn54ac00-sp-issue-with-ibis-model-at-2-5v/6333509Tue, 05 May 2026 18:00:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f2a1c121-797f-4a0a-b881-43f50f18ebfbMalcolm LynHi Lang, We probably aren't able to collect 2.5V data here, so extrapolation will be the best we can do. Can you attach the model version you are currently using and I can see if I can fix it? Best, Malcolmhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642480/sn74lxc8t245-sn74lxc8t245-speed-when-vcca-vccb/6333411Tue, 05 May 2026 16:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:24c4fce0-ea05-4b20-af5d-be802cfc614cJoshua SalinasHello Lukasz, We can estimate the max data rate by using the following formula: 1 / tpd . Since we have a max prop delay of 9ns, then our estimated max data rate would be 111Mbps. This is based on the test circuit found on Section 7.1. If we look at another level translator like SN74AXC8T245, which has a max prop delay of 4ns (VCCA=VCCB=3.3V), our max estimated data rate would be 250Mbps. Hope this helps! Regards, Joshhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642630/sn54als564b-difference-between-sn54als564b-and-sn54als576b/6333403Tue, 05 May 2026 16:34:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:a2fc83ad-ae4e-4ca7-879e-f41d33596671Clemens LadischThey indeed have identical behaviour. I suspect that the 564 is an older design without a /CLR input, and that the 576 and 577 use the same die with the /CLR input internally pulled high in the 576.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642625/txs-evm-board-files/6333388Tue, 05 May 2026 16:24:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:499481a1-8319-4a65-83aa-d65b106ba897Jack GuanHi Sasha, The dimensions of the TXS-EVM board is 4600mil x 2560mil. Regards, Jackhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642222/sn7400-transistor-outline-package-part-ignore-part-number-entered-in-this-form/6333383Tue, 05 May 2026 16:21:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:91ac32b7-c04f-435e-9c5b-4ce51eaca49cClemens LadischThe LMC package has eight pins. What you are searching for is the same package with two pins removed; as far as I know, any such device was discontinuted before TI acquired NS.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1642542/sn74lvc1g08-sn74lvc1g08-w-5v-level-input/6333376Tue, 05 May 2026 16:16:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dbdeea1c-c154-40ff-8bd3-0f0db5204681Clemens LadischYes. See [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?