https://e2echina.ti.com/support/switches-multiplexers/zh-CNTelligent Community 13https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1072404/ts3usb221-ts3usb211/3861401Sat, 09 May 2026 01:31:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:6644f66c-b15c-4642-b90c-0bf17507d358NOARH HOWARD十分感谢，目前已选好了https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1072404/ts3usb221-ts3usb211/3861329Fri, 08 May 2026 03:48:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:bb05f56e-8f8a-4359-9233-a8fcc0a6586eLydia您好， 您指的是尾缀带.A,.B和G4的产品的区别是吧， 关于尾缀带.A和.B的产品，可以参考此链接， https://www.ti.com.cn/zh-cn/ordering-resources/import-details.html 关于尾缀带G4的产品，您可以参考此FAQ, e2e.ti.com/.../faq-what-does-the-g3-g4-e4-suffix-mean-on-ti-analog-switches-multiplexershttps://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1072404/ts3usb221-ts3usb211/3861327Fri, 08 May 2026 03:39:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:1bd08150-580e-45ac-85e5-d893a79fe695Lydia您好， 已 经 收到了您的案例， 调查 需要些 时间 ，感 谢 您的耐心等待。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1072404/ts3usb221-ts3usb211Fri, 08 May 2026 03:38:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:35a08c20-6cdf-4e2c-8c90-322aa96779daNOARH HOWARDPart Number: TS3USB221 使用QFN封装，工作温度-40～85℃，还是有很多型号，有什么特殊差异点TS3USB221https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1069659/cd4051b-cd4051-channel-damage-issue/3856072Wed, 29 Apr 2026 04:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:181d1ea2-954d-4513-a677-3902bd3e5e21Eirwen超过5.1 Absolute Maximum Ratings的电压电流可能损坏芯片，每个CD4051内部保护二极管、ESD结构和工艺并不完全相同，所以在VDD未上电时，通道加13.5V会产生不同程度的灌电流、闩锁或局部过热，导致器件损坏表现不同。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1069659/cd4051b-cd4051-channel-damage-issue/3850959Wed, 22 Apr 2026 02:43:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:2d7975fd-63df-4129-aaea-c429cbb89913Eirwen已经收到了您的案例，调查需要些时间，感谢您的耐心等待。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1069659/cd4051b-cd4051-channel-damage-issueWed, 22 Apr 2026 02:22:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:b1896a1c-aeef-4d66-9e39-a12c6aa4d63cJayden YinPart Number: CD4051B As we all know, there is an internal diode between each channel and VDD in the CD4051. We found that applying 13.5V to a channel for a short duration (~1 s) while VDD is unpowered may lead to channel damage. However, different CD4051 devices exhibit different behaviors under the same conditions. We would like to understand the differences between these CD4051 devices.CD4051B混合动力、电动和动力总成系统https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1066855/sn74cb3q3384a-emmc_vccq1-8v-emmc-50m-sn74cb3q3384apwr-ti-ok/3842480Thu, 09 Apr 2026 08:20:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:035e4703-f200-4817-be0f-9de17c547616Links是的，SN74CB3Q3384A 芯片能够支持 1.8 伏的 I/O 电压，而其 VCC 电压为 3.3 伏。这一参数在数据手册中属于推荐工作条件范畴。 TRANSLATE with x English Arabic Hebrew Polish Bulgarian Hindi Portuguese Catalan Hmong Daw Romanian Chinese Simplified Hungarian Russian Chinese Traditional Indonesian Slovak Czech Italian Slovenian Danish Japanese Spanish Dutch Klingon Swedish English Korean Thai Estonian Latvian Turkish Finnish Lithuanian Ukrainian French Malay Urdu German Maltese Vietnamese Greek Norwegian Welsh Haitian Creole Persian TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal Backhttps://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1066855/sn74cb3q3384a-emmc_vccq1-8v-emmc-50m-sn74cb3q3384apwr-ti-ok/3841218Wed, 08 Apr 2026 07:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:837fc35a-8848-49e6-985f-26c68e9316b2Links您好， 已经收到了您的案例，调查需要些时间，感谢您的耐心等待 。 TRANSLATE with x English Arabic Hebrew Polish Bulgarian Hindi Portuguese Catalan Hmong Daw Romanian Chinese Simplified Hungarian Russian Chinese Traditional Indonesian Slovak Czech Italian Slovenian Danish Japanese Spanish Dutch Klingon Swedish English Korean Thai Estonian Latvian Turkish Finnish Lithuanian Ukrainian French Malay Urdu German Maltese Vietnamese Greek Norwegian Welsh Haitian Creole Persian TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal Backhttps://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1066855/sn74cb3q3384a-emmc_vccq1-8v-emmc-50m-sn74cb3q3384apwr-ti-okWed, 08 Apr 2026 04:23:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:8d3b56e3-5076-4cc3-9a4c-9a9cec4341dbAnna dongPart Number: SN74CB3Q3384A 1.EMMC_VCCQ1.8V供电，EMMC 50M速率 2.SN74CB3Q3384APWR VCC--3.3v供电，OE 也是3.3V 的电平或者0电平，1A0-2A4 分别接EMMC 的MSH_CLK/MSH_CMD，MSH_DATA0-7这些输入信号是1.8V. 请问输入和输出是不是不受VCC供电影响，可以支持1.8V 的输入输出 TRANSLATE with x English Arabic Hebrew Polish Bulgarian Hindi Portuguese Catalan Hmong Daw Romanian Chinese Simplified Hungarian Russian Chinese Traditional Indonesian Slovak Czech Italian Slovenian Danish Japanese Spanish Dutch Klingon Swedish English Korean Thai Estonian Latvian Turkish Finnish Lithuanian Ukrainian French Malay Urdu German Maltese Vietnamese Greek Norwegian Welsh Haitian Creole Persian TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal BackECTESN74CB3Q3384Ahttps://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3841069Tue, 07 Apr 2026 00:01:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:518b948c-7674-4816-bcac-bda9bf02d886Vivian Gao是的，这个判断正确。同时具备低导通电阻和低电容特性能最大限度降低低通滤波效应发生的可能性。 以下是几个2通道4:1多路复用器，其截止频率应足够高，以避免产生任何滤波效应： TMUX1109 (Ron = 4 ohm, Con = 38 pF, BW = 135 MHz) TMUX1209 (Ron = 9 ohm, Con = 42 pF, BW = 125 MHz) SN74CB3Q3253 (Ron = 3.5 ohm, Con = 13 pF, BW up to 500 MHz) 如果有其他问题，请重新发帖。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3839534Thu, 02 Apr 2026 10:06:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:71d90355-ac95-49b4-8498-987c4c537198user3555665AI回答了用TMUX1574，其内部导通电阻只有2欧，是否能够大大缓解这种低通滤波现象？比较尴尬的是，之前考虑过这片，该芯片只能2选1，如果用2片输出并联的话，布线不顺https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3839533Thu, 02 Apr 2026 09:54:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:3166255c-01c1-431e-a409-7b8c558f83f9user355566535 MHz在高采样率下满足不了。实在不行重新改板都可以，下一版能找到信号完整性好的器件就行https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3839352Wed, 01 Apr 2026 01:03:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:1eeb4037-adce-4872-93a4-04269de3e97aVivian Gao设备的固有阻抗可能形成了一个低通滤波器。 有一种型号为 SN74LV4052A 的器件，其引脚排列和配置与 TMUX1309A 相同，同时切换时间更快。由于测试条件不同，很难比较器件的电容。它在 Vcc = 3 V 时的带宽为 35 MHz，在 Vcc = 5 V 时的带宽为 50 MHz。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065473/tmux6209-noise-isolation-solutions-for-digital-control-signals-passing-through-analog-areas---tmux-series-multiplexers/3839350Wed, 01 Apr 2026 00:49:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:998b5103-90fa-4add-a895-97617e02d3b1Taylor1. It is generally recommended to avoid routing noisy signal traces near analog traces. However, if control lines must cross an analog region, keep them as short as possible and route them over a solid ground plane. 2. Typically no, The TMUX6209 logic pins are designed for normal digital control and have internal pull resistors. This device is intended for DAQ, so you can add a RC as a option only if you are having a real EMI or glitch problem. 3. The TMUX6209, does have a layout section in the datasheet, ensure that there is good decoupling on VDD/VSS, a solid ground reference doing this can help with cross talk. But if possible route the digital pins away from the S and D pins. 4. A faster control edge can couple more easily into nearby analog nodes because of the high frequency energy so the edge rate does matter. You could use a RC filter like mentioned before to slow the rise time, and reduce the noise.https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3838977Tue, 31 Mar 2026 07:26:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:697ab8e5-d95d-4a1a-a973-5bd73c84f240user3555665现在给出的波形，是直接在复用器输入端和输出端测量的波形对比，没有经过电阻。输入源是芯片的I2S信号输出PIN，没有超过200欧以上的高阻抗，输入给复用器的波形（蓝色波形）已给出来了。复用器本身输出（黄色波形）不能很好地跟随输入波形 脱离系统需要重新制板，一时半会实现不了，复用器的输出接的是2块并联的ES9039Q2M芯片输入端，没有查到该芯片输入PIN对地电容参数，估计只有几个PF，不然无法接收高频率的BCLK信号。 一个推测是TMUX1309A芯片的内部导通电阻120欧比较大，与后面的分布电容容易形成低通滤波器，从而导致高频下的信号上升沿变缓? 请问TI有没有经过验证的，能够满足50M频率以下、用于3路I2S信号路由的更合适复用器芯片推荐?https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3838924Tue, 31 Mar 2026 00:49:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:0f4fe71e-fdfa-44c8-8112-df1205c4e30cVivian Gao明白了，所以这是直接从多路复用器输出端探测的，没有经过电阻？我仍然建议完全将多路复用器与系统隔离后再进行测试，以确保系统中没有任何部分会影响多路复用器的行为。另外，我还想确认输入端没有高阻抗，因为这可能导致输出端响应变慢。https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065473/tmux6209-noise-isolation-solutions-for-digital-control-signals-passing-through-analog-areas---tmux-series-multiplexers/3838549Mon, 30 Mar 2026 06:10:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:cb048909-f689-4906-9b3b-3ba33cb8365fhaowei chengThanks，but why did previous documents all suggest treating MUX as an analog device?https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3838544Mon, 30 Mar 2026 05:56:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:da21874b-b044-4f9d-97b4-60cec66dcdb4user3555665是的，发生在U15上。当看到 TMUX1309A输出明显变缓以后，已经断开DB线上的47K电阻，取消了BCLK频率检测。给的波形已经是断开后测到的波形https://e2echina.ti.com/support/switches-multiplexers/f/switches-multiplexers-forum/1065562/tmux1309a-tmux1309a/3838513Mon, 30 Mar 2026 02:51:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:53265461-18a3-4cf7-9eaa-91e820e6142bVivian Gao需要澄清的是，这个问题发生在U15上，对吗？ 我很好奇DA/DB线上的47k电阻器是否对信号有影响。你能把TMUX1309A从系统中取出，用类似的输入进行测试吗。这将有助于确认这是多路复用器问题还是系统问题。