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/1679521/sn74axc1t45-sn74axc-power-sequencing/6475252Mon, 07 Sep 2026 21:12:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:24e2583d-ecc3-443e-a256-a5d4fa61d97dBrian Lin (TXP)Hi Yes, a small VCCA pre-charge is possible when VCCB is powered and VCCA is off. This is caused by partial-power leakage (negative ICCA), not by the I/O signal path. The actual pre-charge voltage depends on the VCCA rail impedance and loading. Thanks Brianhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679524/sn74lvc2t45-maximum-data-rate-of-sn74lvc2t45/6475251Mon, 07 Sep 2026 20:32:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:fa2ce79d-0a46-4b47-a87a-b2085cf666fdBrian Lin (TXP)Hi For SN74LVC2T45, the 75Mbps specification applies when translating to a 1.8V output, including the 5V to 1.8V direction. Therefore, 100 Mbps is not guaranteed for 5V to 1.8V. The datasheet also does not specify a guaranteed maximum data rate for 1.8V to 5V. For SN74LXC2T45, the datasheet guarantees: 1.65~1.95V to 4.5~5.5V: ≥100 Mbps 4.5~5.5V to 1.65~1.95V: ≥50 Mbps Therefore, SN74LXC2T45 can support the required 100 Mbps for 1.8V to 5V, but 100 Mbps is not guaranteed in the reverse direction. Thanks Brianhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1680005/sn74lvc1g98-q1-current-consumption/6475133Mon, 07 Sep 2026 15:58:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:2ab0fa80-9b69-4f7d-a264-21c5e74f2671Marius Popthank youhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1680005/sn74lvc1g98-q1-current-consumption/6475064Mon, 07 Sep 2026 13:57:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b61463d0-fa6e-467e-8dc1-9193ebfae497Clemens LadischI CC is specified as < 10 µA over all supply voltages and temperatures.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679963/sn74lvc8t245-sn74lvc8t245-level-shifter-1-5v-to-5v/6475055Mon, 07 Sep 2026 13:50:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:90d01dd4-fe84-48bd-8f13-6f48bd720f0dClemens LadischSection 5.3 states that with a 1.8 V supply, V IH(min) is 1.17 V. So this will work. Section 5.7 specifies the worst-case propagation delay as 7.1 ns, so a safe estimate of the maximum data rate is 140 Mbps (70 MHz).https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679747/txs0108e-txs0108e-pull-down-resistor-on-outputs/6475048Mon, 07 Sep 2026 13:44:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f10d4c17-5e44-4801-b8e5-04864f1bd9e1Clemens LadischThe TXS is designed for bidirectional open-drain signals and has internal pull-up resistors. Pull-down resistors will not work. For unidirectional signals, use unidirectional translators like the TXU0104/TXU0204/TXU0304.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679702/sn74ahc1g02-nor-gate-as-oscillator/6475047Mon, 07 Sep 2026 13:43:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:bfdd5f8c-a6da-4bbd-ab9d-914f73a135d2Clemens LadischAHC inputs have a very small amount of hysteresis. In any case, slow input edges that exceed the specified Δt/Δv limit can prevent the gate from working correctly. The SN74LVC7002A or SN74LVC1G97 are NOR gates with Schmitt-trigger inputs.https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1680005/sn74lvc1g98-q1-current-consumptionMon, 07 Sep 2026 12:46:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:496861f8-f586-4349-ba3d-ab46ca8a115dMarius PopPart Number: SN74LVC1G98-Q1 Hello, I am reviewing a schematic and I am calculating the current consumption for the voltage rails that are used in the project. The configurable multi-function gate SN74LVC1G98-Q1 is used in the digital interface and it is supplied from 3V3. I looked into the datasheet and I couldn't find anything related to the current consumption on the VCC pin. Could you share with me please a graph that shows Ivcc vs Vcc, or tell me please what could be the range of current consumption for an operating temperature range 0deg up to +45deg? Thank you, MariusIndustrial AutomationSN74LVC1G98-Q1https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679991/sn74hcs595-q1-abnormal-output-low-levelMon, 07 Sep 2026 12:07:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:905b22d4-b89b-461c-8be3-75aa02d753aaFrank QINPart Number: SN74HCS595-Q1 Hi Team, In our BMS system, we are experiencing an abnormal drop-out issue with the drive relay during vehicle operation. Below is our application using the SN74HCS595QPWRQ1, where we use the 595's clear and latch functions to implement relay clear, drive, and hold operations. We would like to confirm whether the SN74HCS595QPWRQ1 has any condition under which it may abnormally output a low level, causing an abnormal turn-off of our low-side relay driver. If such a condition exists, we would like to review the FTA and discuss whether design changes can be made to improve robustness. Thank you Regards, FrankHybridelectric & powertrain systemsSN74HCS595-Q1https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679963/sn74lvc8t245-sn74lvc8t245-level-shifter-1-5v-to-5vMon, 07 Sep 2026 11:20:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:c7199fc5-7453-46b5-b597-1afb9b758cbdYoel Ben-NaimPart Number: SN74LVC8T245 Hi, The SN74LVC8T245 datasheet says that the SN74LVC8T245 has an enhanced input voltage that can go down to 1.2V depends on the VinH-min but it is not stated in the list at the reccomended operating electrical charectaristics. My quenstion is, is it possible to translate from 1.5V to 5V when VCCA is 1.8V and VCCB is 5V and in what rate?SN74LVC8T245Aerospace & Defensehttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679919/cd14538b-esd-data-for-tssop-packageMon, 07 Sep 2026 09:51:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ba496880-a5ea-401c-a13e-4407a14f7341Jejomar IldefonsoPart Number: CD14538B Hi Team, Is the ESD data discussed on the original thread also applicable for the CD14538BPWR variant? If not, do we have the data for the TSSOP package variant? Kind Regards, JejomarCD14538Bhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679440/sn74lvc1g07-so-590098-sn74lvc1g07dckre4-defective/6474749Mon, 07 Sep 2026 08:11:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:45221d72-d0b9-4bba-9fd6-fca57e15c6cfManuel RosarioThanks Nikki, Noted that. Will request form customer. Regards, Manuelhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679747/txs0108e-txs0108e-pull-down-resistor-on-outputsMon, 07 Sep 2026 02:55:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:0376b234-4863-41fc-8d77-fc3bf91da734KENGO AKIKAWAPart Number: TXS0108E Other Parts Discussed in Thread: TXU0304 , TXU0104 , TXU0204 The TXS0108E is used with VCCA=1.8V and VCCB=3.3V. The Bxx terminal is input in a push-pull configuration. If the Axx terminal is pulled down with a 4.7kOhm resistor, will Bxx function correctly as an input and Axx as an output? Best regards, AkikawaTXU0104Industrial AutomationTXU0204TXU0304TXS0108Ehttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679729/sn74aup1g08-request-for-sn74aup1g08dbvr-datasheet-rohs-declaration-and-orcad-libraryMon, 07 Sep 2026 01:49:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:dafee9cd-9ab4-4f11-9572-01bdc3d091f1Bruce DaiPart Number: SN74AUP1G08 Hi AE, I need the following items for development. 1. The latest datasheet for SN74AUP1G08DBVR. 2. The RoHS compliance certificate/declaration and material declaration. 3. The OrCAD Capture schematic symbol library (.OLB). Best RegardsPC & NotebooksSN74AUP1G08https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679702/sn74ahc1g02-nor-gate-as-oscillatorSun, 06 Sep 2026 09:42:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b3ecf24a-d72d-4c06-beac-f3aed6cdcd71Urmi ShahPart Number: SN74AHC1G02 Other Parts Discussed in Thread: SN74LVC1G97 , SN74LVC7002A Hello, We are using NOR gate as a oscillator to driver buzzer. Fault tone is Enable/Disable for the oscillator. RC is for the timing which is set to 3.3ms i.e around 300Hz. As per the logic this ciruit must work, but on the board we are not able to see capacitor charge-discharge waveform when Fault tone is low. There are pulses on Output of NOR gate, but the frequency is not stable. Does this IC have schmitt trigger input? the datasheet mentions this but the product details page says CMOS input. Any other reason this circuit might not work? Request you yo help on this. Below is attached image of the Schematic.SN74AHC1G02SN74LVC1G97SN74LVC7002Ahttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1673487/lsf0101-package-spec-information-regquest/6474076Fri, 04 Sep 2026 20:21:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:8a02a670-6cf9-4979-894f-d0daa5402a95Jason TrinhHi Nomura-san, We are still looking into this and will provide a response soon. Regards, Jasonhttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679440/sn74lvc1g07-so-590098-sn74lvc1g07dckre4-defective/6474031Fri, 04 Sep 2026 19:20:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:59c0c6b0-65f8-4a4d-8f17-be4729bb41ebNikki DengelHi Manuel, This isn't enough information to make a judgement. Please provide a schematic and waveforms of the issue, and I can try to help diagnose the problem. Regards, Nikkihttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1673434/sn74hc4020-rthetajc-for-sn74hc4020/6473820Fri, 04 Sep 2026 15:57:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:f9026a39-ed1b-418d-8e50-a4bfd0873c58Nikki DengelHi Avery, Thanks for following up. Please see the results below: Result- Theta JA-High K (standard datasheet value) 72.82 Result-Theta JC, top (standard datasheet value) 34.16 Result-Theta JB (standard datasheet value) 37.66 Result- Psi JT (standard datasheet value) 5.34 Result- Psi JB (standard datasheet value) 37.22 Regards, Nikkihttps://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679284/sn74lvc3g14-sn74lvc3g14dcur-2a-input-degraded-to-5-k-ohm-to-gnd-after-thermal-bias-exposure-requesting-failure-analysis-path/6473676Fri, 04 Sep 2026 14:41:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:e56038a9-8325-48fa-94f0-a546b3f9e616Akshay Momayathanks a lot Kollin,https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1679284/sn74lvc3g14-sn74lvc3g14dcur-2a-input-degraded-to-5-k-ohm-to-gnd-after-thermal-bias-exposure-requesting-failure-analysis-path/6473669Fri, 04 Sep 2026 14:37:00 GMTcb01d8b2-d089-468d-babb-77d1d8683490:ac5d7695-9a3a-45c3-a0a4-5378a8a5ba38Kollin EwingHi Akshay, Based on the above schematics, which doesn't appear to have any issues, this is likely a quality issue. If you submit a customer return the part can be sent to our team for troubleshooting to see if we can find out what happened and get back to you. Regards, Kollin Ewing