TMUX7234
- Latch-up immune
- Dual supply range: ±4.5 V to ±22 V
- Single supply range: 4.5 V to 44 V
- Low on-resistance: 3 Ω
- Low charge injection: 3 pC
- High current support: 400 mA (maximum)
- –40°C to +125°C operating temperature
- 1.8 V logic compatible inputs
- Fail-safe logic
- Rail-to-rail operation
- Bidirectional signal path
- Break-before-make switching
The TMUX7234 is a complementary metal-oxide semiconductor (CMOS) multiplexer with latch-up immunity. The TMUX7234 contains four independently controlled SPDT switches with an EN pin to enable or disable all four channels. The device supports single supply (4.5 V to 44 V), dual supplies (±4.5 V to ±22 V), or asymmetric supplies (such as VDD = 12 V, VSS = –5 V). The TMUX7234 supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from VSS to VDD.
All logic control inputs support logic levels from 1.8 V to VDD, ensuring both TTL and CMOS logic compatibility when operating in the valid supply voltage range. Fail-Safe Logic circuitry allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage.
The TMUX72xx family provides latch-up immunity, preventing undesirable high current events between parasitic structures within the device typically caused by overvoltage events. A latch-up condition typically continues until the power supply rails are turned off and can lead to device failure. The latch-up immunity feature allows the TMUX72xx family of switches and multiplexers to be used in harsh environments.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TMUX7234 44 V, Low Ron, 2:1, 4 Channel Precision Switches with Latch-Up Immunity and 1.8 V Logic datasheet (Rev. G) | PDF | HTML | 2024/7/18 | ||
| 應用說明 | How to Handle High Voltage Common Mode Applications using Multiplexers | PDF | HTML | 2022/10/3 | |||
| 應用說明 | Using Latch Up Immune Multiplexers to Help Improve System Reliability (Rev. A) | 2021/9/20 | ||||
| Application brief | Precision Multiplexers Reducing Barriers in an Industrial Environment | PDF | HTML | 2021/5/21 |
設計與開發
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TMUXRTJ-RRQEVM — 適用於 20 針腳 RTJ 和 RRQ QFN 封裝的通用 TMUX 評估模組
TMUXRTJ-RRQEVM 可對 TI 的 TMUX 產品系列進行快速原型設計和 DC 特性分析，這些產品使用 20 接腳 RTJ 或 RRQ 封裝 (QFN)，並且額定用於高電壓操作。
LEADED-ADAPTER1 — 適用於快速測試 TI 的 5、8、10、16 及 24 針腳引線封裝的表面貼裝至 DIP 接頭適配器
EVM-LEADED1 板可用於快速測試和搭建 TI 常見的有引腳封裝 此電路板具備板上配置，可將 TI 的 D、DBQ、DCT、DCU、DDF、DGS、DGV 和 PW 表面黏著封裝轉換為 100mil DIP 排針。
LEADLESS-ADAPTER1 — 用於測試 TI 的 6、8、10、12、14、16 和 20 針腳無引線封裝的表面貼裝至 DIP 接頭適配器
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 20 | Ultra Librarian |
| WQFN (RRQ) | 20 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。