TI TPS3422EGDRYR

重置计时器可调节/可选择2

Overview

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. Thisreset configuration also allows for differentiationbetween 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 TPS3422EGDRYR monitors one input (PB1) and outputs an active-low reset pulse signal (RST) when PB 1 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℃ to +125℃ temperature range, and provide a precise, space-conscious micropower solution for system resetting needs. Features：

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.

Features

Tape & Reel (TR) Package
Reset Timer type
Minimum supply voltage of 1.6V
250nA operating supply current

2 Number of Voltages Monitored

Applications

There are a lot of Texas Instruments
TPS3422EGDRYR Voltage Supervisors applications.

• Transformer load monitoring equipment
• External alarm
• Display equipment
• DC stabilized power supply module
• Insulation fault location system
• Magnetic resonance imaging
• Stable power system
• Sensitive sensors
• Efficient information transmission
• Functional modules