TMUX7309F
- Wide supply range:
- Dual supply: ±5 V to ±22 V
- Single supply: 8 V to 44 V
- Integrated fault protection:
- Overvoltage protection, source to supplies or source to drain: ±85 V
- Overvoltage protection: ±60 V
- Powered-off protection: ±60 V
- Non-fault channels continue to operate
- Known state without logic inputs present
- Output clamped to the supply in overvoltage condition
- Latch-up immune
- 1.8-V Logic capable
- Fail-safe logic: up to 44 V independent of supply
- Integrated pull-down resistor on logic pins
- Break-before-make switching
- Industry standard TSSOP and smaller WQFN packages
The TMUX7308F and TMUX7309F are modern complementary metal-oxide semiconductor (CMOS) analog multiplexers in 8:1 (single ended) and 4:1 (differential) configurations. The devices work well with dual supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies (such as V DD = 12 V, V SS = –5 V). The overvoltage protection is available in powered and powered-off conditions, making the TMUX7308F and TMUX7309F devices suitable for applications where power supply sequencing cannot be precisely controlled.
The device blocks fault voltage up to +60 V or –60 V relative to ground in both powered and powered-off conditions. When no power supplies are present, the switch channels remain in the OFF state regardless of switch input conditions and logic control status. Under normal operation conditions, if the analog input signal level on any Sx pin exceeds the supply voltage (V DD or V SS) by a threshold voltage (V T), the channel turns OFF and the Sx pin becomes high impedance. When the fault channel is selected, the drain pin (D or Dx) is pulled to the supply (V DD or V SS) that was exceeded.
The low capacitance, low charge injection, and integrated fault protection enables the TMUX7308F and TMUX7309F devices to be used in front end data acquisition applications where high performance and high robustness are both critical. The devices are available in a standard TSSOP package and smaller WQFN package (ideal if PCB space is limited).
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 | TMUX730xF ±60-V Fault-Protected, 8:1 and Dual 4:1 Multiplexers with Latch-Up Immunity and 1.8-V Logic datasheet (Rev. C) | PDF | HTML | 2023/7/12 | ||
| Application brief | How to Protect a Multi-Channel RTD System using Fault Protected Multiplexers (Rev. A) | PDF | HTML | 2024/8/8 | |||
| 應用說明 | Protecting and Maintaining Signal Integrity in PLC Systems (Rev. A) | PDF | HTML | 2024/7/22 | |||
| 應用說明 | How to Handle High Voltage Common Mode Applications using Multiplexers | PDF | HTML | 2022/10/3 | |||
| Product overview | PLC Analog Input Front-End Architectures | PDF | HTML | 2022/7/31 | |||
| 應用說明 | Protection Against Overvoltage Events, Miswiring, and Common Mode Voltages | PDF | HTML | 2021/10/7 |
設計與開發
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TMUX-24PW-EVM 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 16、20 或 24 針腳 TSSOP 封裝 (PW)，並且額定用於高電壓操作。
TMUX73XXF-EVM — 適用於 PW 封裝的 TMUX73XXF 評估模組
本使用指南概述 TMUX73XXF 評估模組 (EVM) 及其適用應用。此電路板有助於對採用 TSSOP (PW) 封裝的德州儀器 TMUX73XXF 系列元件，快速進行原型設計和 DC 特性分析。此外，其也具備板載測試點，可提供測試各種訊號的彈性。
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 |
|---|---|---|
| WQFN (RRP) | 16 | Ultra Librarian |
| TSSOP (PW) | 16 | 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。