TPS3422
- Very Small Package: 1.45-mm × 1.00-mm SON
- Operating Range: 1.6 V to 6.5 V
- Single (TPS3422) or Dual (TPS3420 and
TPS3421) Push-Button Inputs - Low Supply Current: 250 nA (Typical)
- Two-State Logic, User-Selectable Input Delay:
- For Example: 7.5 s and 0 s
- Multiple Timing Options Available
- Fixed Time-out Pulse at RST (TPS3421 and
TPS3422): 400 ms (Typical)- Other Timing Options Available on Request
- Active Low, Open-Drain Output
The TPS3420, TPS3421, and TPS3422 (TPS342x) are low-current, ultrasmall, push-button reset timers. These devices use a long timing setup delay to provide the intended system reset, and avoid resets from short push-button closures or key presses. This reset configuration also allows for differentiation between software interrupts and hard system resets.
The TPS3420 and TPS3421 monitor two inputs (PB1 and PB2) and output an active-low reset pulse signal (RST) when both inputs are low for the selected time delay. For the TPS3421, RST remains low for a factory-programmed fixed time. For the TPS3420, RST remains low until one of the PBx inputs is released. The need for a dedicated reset button is eliminated because two inputs are used to ensure reset. The TPS3422 monitors one input (PB1) and outputs an active-low reset pulse signal (RST) when PB1 is low for the selected time delay.
The TPS342x have an open-drain output that can be wire-ORed with other open-drain devices. The TPS342x operate from 1.6 V to 6.5 V over the –40°C to +125°C temperature range, and provide a precise, space-conscious micropower solution for system resetting needs.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS342x Low-Power, Push-Button Controllers With Configurable Delay datasheet (Rev. B) | PDF | HTML | 2014年 9月 2日 |
| Application note | Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions | 2020年 3月 10日 | ||
| Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020年 2月 28日 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019年 6月 28日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| User guide | TPS3421EGEVM-156 Evaluation Module | 2012年 9月 12日 |
設計與開發
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TPS3421EGEVM-156 — TPS3421EG 評估模組
TPS3422EG Unencrypted PSpice Transient Model Package (Rev. A)
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| USON (DRY) | 6 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點