https://e2echina.ti.com/support/logic/f/logic-forumzh-CNTelligent Community 13Thu, 02 Jul 2026 01:44:24 GMThttps://e2echina.ti.com/thread/1082523?ContentTypeID=0Thu, 02 Jul 2026 01:38:56 GMT91561404-af28-475a-b96b-cb6cbaadd097:bf6f1218-2160-49b2-acba-efa0035c8b06YANG XING1https://e2echina.ti.com/thread/1082523?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1082523/sn54f109-sn54f109-iih/rss?ContentTypeId=0<p><b>Part Number:</b> SN54F109</p><p>器件 SN54F109 在电性测试 IIH 输入高电平漏电流项目时，SD1、SD2 引脚测试结果出现负值，最大负向数值超 - 20&mu;A；其余输入管脚漏电流均控制在 &plusmn;20&mu;A 区间，常态约 1&mu;A。查阅器件规格手册，IIH 参数仅规定最大值 20&mu;A，未标注下限判定标准。现咨询两点：<br />该类 SD 引脚负向漏电流超标器件是否判定为合格品，请说明判定依据；<br />从芯片内部架构角度说明 SD1、SD2 引脚与普通输入管脚的差异化设计特点。</p>https://e2echina.ti.com/thread/3896792?ContentTypeID=1Thu, 02 Jul 2026 01:44:24 GMT91561404-af28-475a-b96b-cb6cbaadd097:abfcd428-e9f3-4176-a80e-0d95e00e3d5fVivian Gao0https://e2echina.ti.com/thread/3896792?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1082523/sn54f109-sn54f109-iih/rss?ContentTypeId=0<p>感谢您对TI产品的关注。<br />我们正在核实您的问题，请等待我们的答复。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3876591?ContentTypeID=1Thu, 04 Jun 2026 08:53:54 GMT91561404-af28-475a-b96b-cb6cbaadd097:18222d3a-b8da-44dc-aab2-1ddd10aa9c18Vivian Gao0https://e2echina.ti.com/thread/3876591?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1076815/txb0104-txb0104/rss?ContentTypeId=0<p>下方链接有过回复。</p> <p><a href="https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1480468/txb0104-txb0104-source-series-termination-recommendation?tisearch=e2e-sitesearch&amp;keymatch=TXB0104%252520impedance">TXB0104: TXB0104 Source-series termination Recommendation? - Logic forum - Logic - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1076815?ContentTypeID=0Thu, 04 Jun 2026 03:16:28 GMT91561404-af28-475a-b96b-cb6cbaadd097:2b22da3e-af42-4de0-a91b-d88d421ade3fGuangfeng Wei1https://e2echina.ti.com/thread/1076815?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1076815/txb0104-txb0104/rss?ContentTypeId=0<p><b>Part Number:</b> TXB0104</p><p>TXB0104在a1a2a3a4b1b2b3b4 转换口串的电阻误贴成2k阻值调试测试过，经发现后改成47欧姆电阻，后来a1-a4没有输出了, 再换回2k电阻也没有输出，可能是什么原因？谢谢。</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/122/TXB0104.jpg" alt="TXB0104.jpg" width="663" height="373" data-temp-id="TXB0104.jpg-598675" /></p>https://e2echina.ti.com/thread/1076408?ContentTypeID=0Sat, 30 May 2026 04:27:37 GMT91561404-af28-475a-b96b-cb6cbaadd097:f956432f-2316-4166-bd20-8d1b6dcaacf4?? ?3https://e2echina.ti.com/thread/1076408?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1076408/sn74cb3q3257-sn74cb3q3257/rss?ContentTypeId=0<p><b>Part Number:</b> SN74CB3Q3257</p><p>请问下SN74CB3Q3257的最大结温是多少？我看有的地方写85℃，有的地方写105℃。</p>https://e2echina.ti.com/thread/3876426?ContentTypeID=1Wed, 03 Jun 2026 00:28:14 GMT91561404-af28-475a-b96b-cb6cbaadd097:6b4d576e-1946-464a-9793-4f560d3f846aEirwen0https://e2echina.ti.com/thread/3876426?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1076408/sn74cb3q3257-sn74cb3q3257/rss?ContentTypeId=0<p>请参考下面FAQ：</p> <p><a href="https://e2e.ti.com/support/switches-multiplexers-group/switches-multiplexers/f/switches-multiplexers-forum/1063078/faq-how-to-calculate-the-max-junction-temperature-of-an-analog-switch-multiplexer">[FAQ] How to Calculate the Max Junction Temperature of an Analog Switch/Multiplexer. - Switches &amp; multiplexers forum - Switches &amp; multiplexers - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3876322?ContentTypeID=1Tue, 02 Jun 2026 03:02:38 GMT91561404-af28-475a-b96b-cb6cbaadd097:e7155c06-a14f-4d65-aa52-99b539aac2eb?? ?1https://e2echina.ti.com/thread/3876322?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1076408/sn74cb3q3257-sn74cb3q3257/rss?ContentTypeId=0<p>请问有确认结果了吗</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3876259?ContentTypeID=1Mon, 01 Jun 2026 05:38:44 GMT91561404-af28-475a-b96b-cb6cbaadd097:f1aafe21-3d55-4e1d-bcfa-c7161aac4d37Eirwen0https://e2echina.ti.com/thread/3876259?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1076408/sn74cb3q3257-sn74cb3q3257/rss?ContentTypeId=0<p>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3875076?ContentTypeID=1Fri, 29 May 2026 06:17:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:4084bd04-92f8-4530-afcf-23219f3d2ce3Lydia0https://e2echina.ti.com/thread/3875076?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1076373/sn74lvc1g08-tj/rss?ContentTypeId=0<p>您好，数据手册第四页有具体数值，<a href="https://www.ti.com.cn/cn/lit/ds/symlink/sn74lvc1g08.pdf">www.ti.com.cn/.../sn74lvc1g08.pdf</a></p> <p><img style="max-height:240px;max-width:320px;" src="https://e2echina.ti.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/122/pastedimage1780035852449v1.png" alt=" " /></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1076373?ContentTypeID=0Fri, 29 May 2026 06:01:12 GMT91561404-af28-475a-b96b-cb6cbaadd097:e610fa0a-5b74-4fbf-9fae-1327a6aeb441zhou wenqiang1https://e2echina.ti.com/thread/1076373?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1076373/sn74lvc1g08-tj/rss?ContentTypeId=0<p><b>Part Number:</b> SN74LVC1G08</p><p>HI,</p> <p>请帮忙给一下SN74LVC1G08DCKR 这个器件的Tj温度，以便我屏蔽热风险，谢谢。</p>https://e2echina.ti.com/thread/1075599?ContentTypeID=0Tue, 26 May 2026 08:58:37 GMT91561404-af28-475a-b96b-cb6cbaadd097:658f4aba-ca41-43d1-b223-48e4c729d521zhang xinyu3https://e2echina.ti.com/thread/1075599?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1075599/sn74hc14-sn74hc14-input-vcc/rss?ContentTypeId=0<p><b>Part Number:</b> SN74HC14</p><p>你好：我们是SN74HC14, INPUT信号的高电平是5V，VCC供电电压是3.3V，请问是否可以？HC14的的输入INPUT到VCC的二极管作用是什么？为什么要这个二极管？</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/122/8422.image.png" alt="image.png" data-temp-id="image.png-34387" /></p>https://e2echina.ti.com/thread/3874099?ContentTypeID=1Thu, 28 May 2026 07:16:41 GMT91561404-af28-475a-b96b-cb6cbaadd097:2c83351c-2480-4211-a47d-cc88d5532b8eEirwen0https://e2echina.ti.com/thread/3874099?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1075599/sn74hc14-sn74hc14-input-vcc/rss?ContentTypeId=0<p>请参考下面FAQ：</p> <p><a href="https://e2e.ti.com/support/logic-group/logic/f/logic-forum/723607/faq-can-the-input-voltage-vi-to-my-logic-device-be-higher-than-the-supply-voltage-vcc">(1) [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)? - Logic forum - Logic - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3874098?ContentTypeID=1Thu, 28 May 2026 07:15:25 GMT91561404-af28-475a-b96b-cb6cbaadd097:5e094e9a-ed77-4c1a-97b9-eb1346abaf59Eirwen0https://e2echina.ti.com/thread/3874098?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1075599/sn74hc14-sn74hc14-input-vcc/rss?ContentTypeId=0<p>请参考下面FAQ：</p> <p><a href="https://e2e.ti.com/support/logic-group/logic/f/logic-forum/723607/faq-can-the-input-voltage-vi-to-my-logic-device-be-higher-than-the-supply-voltage-vcc">(1) [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)? - Logic forum - Logic - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3872272?ContentTypeID=1Tue, 26 May 2026 09:59:12 GMT91561404-af28-475a-b96b-cb6cbaadd097:92f73a96-c46e-4496-9547-af15f729350dLinks0https://e2echina.ti.com/thread/3872272?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1075602/sn74lv595a-x-ray/rss?ContentTypeId=0<p style="color:#172b4d;font-family:&#39;Microsoft YaHei&#39;;font-size:10.5pt;margin-bottom:0pt;margin-left:.375in;margin-top:7pt;" lang="en-US"><span style="background:white;">TI 论坛旨在解决客户在使用TI产品过程中遇到的技术问题。请按照以下方式联系客户支持部门，会有客服为您提供帮助。</span></p> <ul style="direction:ltr;margin-bottom:0in;margin-top:0in;"> <li style="color:#172b4d;margin-bottom:0;margin-top:0;vertical-align:middle;"><span style="background:white;color:#172b4d;font-family:&#39;Microsoft YaHei&#39;;font-size:10.5pt;" lang="en-US">打开链接</span><a href="https://ticsc.service-now.com/csm"><span style="background:white;font-family:&#39;Microsoft YaHei&#39;;font-size:10.5pt;" lang="x-none">https://ticsc.service-now.com/csm</span></a></li> <li 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Cai1https://e2echina.ti.com/thread/1075602?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1075602/sn74lv595a-x-ray/rss?ContentTypeId=0<p><b>Part Number:</b> SN74LV595A</p><p>TI的料号会因为年份产地这些导致X-RAY不一样吗？有PCN吗？具体料号SN74LV595APWR</p>https://e2echina.ti.com/thread/3872268?ContentTypeID=1Tue, 26 May 2026 09:01:26 GMT91561404-af28-475a-b96b-cb6cbaadd097:4c7a4119-5533-4fe7-aab2-62e35aac2864Eirwen2https://e2echina.ti.com/thread/3872268?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1075599/sn74hc14-sn74hc14-input-vcc/rss?ContentTypeId=0<p>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3872225?ContentTypeID=1Tue, 26 May 2026 03:38:39 GMT91561404-af28-475a-b96b-cb6cbaadd097:8aa49a8d-19c1-4907-bc65-12674c771520Eirwen0https://e2echina.ti.com/thread/3872225?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1074466/sn74avc4t774-sn74axc4t774-sn74avc4t774/rss?ContentTypeId=0<p>感谢您对TI产品的关注！ 关于您的咨询，我看您在英文E2E与我们的工程师<span>Josh</span>在沟通。 那这边的帖子我就关闭了。 有疑问请继续与<span>Josh</span>直接沟通：</p> <p><a href="https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1647475/sn74axc4t774-sn74axc4t774-sn74avc4t774?tisearch=e2e-quicksearch&amp;keymatch=SN74AXC4T774%20SN74AVC4T774">(1) SN74AXC4T774: SN74AXC4T774 &amp; SN74AVC4T774 - Logic forum - Logic - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1074466?ContentTypeID=0Wed, 20 May 2026 12:42:46 GMT91561404-af28-475a-b96b-cb6cbaadd097:27a00d32-8088-444b-8a22-c23c266b94a7switch2https://e2echina.ti.com/thread/1074466?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1074466/sn74avc4t774-sn74axc4t774-sn74avc4t774/rss?ContentTypeId=0<p><b>Part Number:</b> SN74AVC4T774</p><p>Hi ti team，</p> <p>新项目调试时遇到SN74AXC4T774 和SN74AVC4T774软件兼容问题，你能帮忙看下原因吗？附件是SN74AXC4T774 和SN74AVC4T774使用过程问题汇总，Thanks！</p> <p><a href="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/122/_73518E4E_SN74AXC4T774-_8C54_SN74AVC4T774_AF8247727F4F28757C51B95B2760EE959898476C3B60_.docx" target="_blank" rel="noopener">关于SN74AXC4T774 和SN74AVC4T774芯片使用兼容性问题汇总.docx</a>&nbsp;</p>https://e2echina.ti.com/thread/1075006?ContentTypeID=0Fri, 22 May 2026 07:32:20 GMT91561404-af28-475a-b96b-cb6cbaadd097:ceec98c7-e954-4fc1-86eb-74c30e1a348dhaiyou xie1https://e2echina.ti.com/thread/1075006?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1075006/sn74hcs573-q1/rss?ContentTypeId=0<p><b>Part Number:</b> SN74HCS573-Q1</p><p>官网上只找到这器件的3D模型，找不到书面上的规格信息。</p>https://e2echina.ti.com/thread/3870067?ContentTypeID=1Fri, 22 May 2026 07:38:26 GMT91561404-af28-475a-b96b-cb6cbaadd097:9552c491-3b40-44ab-9ab5-93a6700ff115Lydia0https://e2echina.ti.com/thread/3870067?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1075006/sn74hcs573-q1/rss?ContentTypeId=0<p>您好，</p> <p>请参考<a href="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/122/VQFN-Package-Info-_2800_1_2900_.pdf">e2echina.ti.com/.../VQFN-Package-Info-_2800_1_2900_.pdf</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3869114?ContentTypeID=1Thu, 21 May 2026 23:53:26 GMT91561404-af28-475a-b96b-cb6cbaadd097:5316c0c7-d5df-41aa-bee5-eac6ad9875c5Lydia0https://e2echina.ti.com/thread/3869114?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1074478/sn74hc14-sn74hc14-vcc/rss?ContentTypeId=0<p>您好，新问题请重新再发一个帖子谢谢</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/1074478?ContentTypeID=0Thu, 21 May 2026 02:56:26 GMT91561404-af28-475a-b96b-cb6cbaadd097:cfa4d4c5-c4c4-4e18-bf8a-9862a2520412zhang xinyu3https://e2echina.ti.com/thread/1074478?ContentTypeID=0https://e2echina.ti.com/support/logic/f/logic-forum/1074478/sn74hc14-sn74hc14-vcc/rss?ContentTypeId=0<p><b>Part Number:</b> SN74HC14</p><p>你好：我们是SN74HC14, INPUT信号的高电平是5V，VCC供电电压是3.3V，请问是否可以？如果不可以直接这样用，那么在输入信号串联一个电阻，是否可以? 如果串联电阻，串联的电阻要多大？</p> <p>&nbsp;</p> <p><img src="https://e2echina.ti.com/cfs-file/__key/communityserver-discussions-components-files/122/a113cefe_2D00_4810_2D00_43b7_2D00_a381_2D00_9ef1119a57e6.png" alt="a113cefe-4810-43b7-a381-9ef1119a57e6.png" width="510" height="247" data-temp-id="a113cefe-4810-43b7-a381-9ef1119a57e6.png-49892" /></p> <p>&nbsp;</p>https://e2echina.ti.com/thread/3868259?ContentTypeID=1Thu, 21 May 2026 12:04:57 GMT91561404-af28-475a-b96b-cb6cbaadd097:a88dd22c-f87b-45ac-9527-3df31e9ab166zhang xinyu1https://e2echina.ti.com/thread/3868259?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1074478/sn74hc14-sn74hc14-vcc/rss?ContentTypeId=0<p>你好，感谢。麻烦再问下，为什么HC的逻辑VI输入到VCC有这个二极管？这个二极管的作用是什么？</p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3868221?ContentTypeID=1Thu, 21 May 2026 03:21:45 GMT91561404-af28-475a-b96b-cb6cbaadd097:f6317ca1-69fa-456b-b93e-bb6a6684bce4Lydia1https://e2echina.ti.com/thread/3868221?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1074478/sn74hc14-sn74hc14-vcc/rss?ContentTypeId=0<p>您好，</p> <p>请参考此FAQ<a href="https://e2e.ti.com/support/logic-group/logic/f/logic-forum/723607/faq-can-the-input-voltage-vi-to-my-logic-device-be-higher-than-the-supply-voltage-vcc">[FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)? - Logic forum - Logic - TI E2E support forums</a></p><div style="clear:both;"></div>https://e2echina.ti.com/thread/3868204?ContentTypeID=1Wed, 20 May 2026 22:44:42 GMT91561404-af28-475a-b96b-cb6cbaadd097:ffc9e4ea-e3f4-4c28-b9bc-a16e8ecff76fTaylor1https://e2echina.ti.com/thread/3868204?ContentTypeID=1https://e2echina.ti.com/support/logic/f/logic-forum/1074466/sn74avc4t774-sn74axc4t774-sn74avc4t774/rss?ContentTypeId=0<p>您好，</p> <p>已经收到了您的案例，调查需要些时间，感谢您的耐心等待。</p><div style="clear:both;"></div>