TMUX7462F
- Wide supply range: 8 V to 44 V single supply ±5 V to ±22 V dual supply
- Channel protector without need for dedicated
select pin per channel
- Reduces number of control logic signals to route across PCB
- Integrated fault protection:
- Overvoltage protection, source to supplies or source to drain: ±85 V
- Overvoltage protection: ±60 V
- Powered-off protection: ±60 V
- Interrupt flags to indicate fault status
- Adjustable overvoltage triggering thresholds
- V FP: 3 V to V DD, V FN: 0 V to V SS
- Adjustable output behavior (clamped or open) during fault
- Latch-up immunity by device construction
- 6 kV human body model (HBM) ESD rating
- Low On-Resistance: 8.3 Ω typical
- Flat On-Resistance: 5 mΩ typical
- Industry-standard TSSOP and smaller WQFN package
The TMUX7462F is a four-channel protector that can be placed on the front end of a signal path to protect sensitive components downstream from damage caused by overvoltage faults. Each of the 4 channels has an internal switch that is turned-off automatically upon occurrence of an overvoltage fault without the need of external controls. This simplifies robust system level protection designs by removing the need for control signals for each channel of the device. The overvoltage protection is available in powered and powered-off conditions, making the TMUX7462F suitable for applications where power supply sequencing cannot be precisely controlled.
The switch channels remain in the high impedance state (regardless of switch input conditions) when the devices power supplies are floating, grounded, or at a level that is below the undervoltage (UV) threshold. If the signal level on any Sx pin exceeds the fault supply (V FP or V FN) by a threshold voltage (V T), then the Sx pin becomes high impedance and an output fault flag is asserted low to indicate a fault condition under normal operation. The drain pin (Dx) is either pulled to the fault supply voltage that was exceeded or left floating depending on the DR control logic.
The device operates with dual supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies. The low and flat on-resistance of the device makes the TMUX7462F an excellent solution for data acquisition applications where excellent linearity and low distortion is critical.
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 | TMUX7462F ±60 V Fault-Protected, Latch-Up Immune, Quad Channel Protector with Adjustable Fault Threshold and 1.8-V Logic datasheet (Rev. B) | PDF | HTML | 2023/6/12 | ||
| 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 | |||
| Application brief | Replace Discrete Protection and Optimize Your PLC System Protection | PDF | HTML | 2022/1/3 | |||
| 應用說明 | Protection Against Overvoltage Events, Miswiring, and Common Mode Voltages | PDF | HTML | 2021/10/7 | |||
| 應用說明 | Improving Analog Input Modules Reliability Using Fault Protected Multiplexers | PDF | HTML | 2021/9/28 |
設計與開發
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TMUX741-746EVM — 適用於 PW 和 RRP 封裝的 TMUX741xF 和 TMUX7462F 評估模組
TMUX741-746EVM 支援評估採用 TSSOP (PW) 和 WQFN (RRP) 封裝的 TMUX741xF 和 TMUX746xF 裝置系列。此評估模組 (EVM) 可用於 TMUX741xF 和 TMUX746xF 裝置系列進行快速原型設計和測試，以進行 DC 參數評估。
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) | 16 | Ultra Librarian |
| WQFN (RRP) | 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。