DS1231S-20/T&R

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The DS1231S-20/T&R is a microprocessor supervisory circuit which offers a single, cost-effective solution for reliable system power management. The DS1231S-20/T&R is a system power-on reset generator which monitors the supply voltage and provides protection against power-up and power-down transient conditions without the need for an external reset generator. It provides a reset signal when the power supply reaches a predefined level and holds it active until the power supply reaches a predefined level. The DS1231S-20/T&R is also capable of driving an external transistor or other active device via the state output pin.

This device provides protection in a variety of applications, including system backplanes, motherboards, and other power management systems. The DS1231S-20/T&R has many advantages over other reset circuit designs, such as improved power-up/power-down performance, reduced system reset latency, high accuracy, and improved temperature stability. Additionally, it features low operating current, an internal calibration feature, and an adjustable reset time delay.

The DS1231S-20/T&R works by monitoring the power supply voltage and maintaining a constant level at the reset output pin. When the power supply voltage reaches a threshold level, the reset output goes LOW and then, after a specified delay time, goes HIGH. The internal calibration feature allows for setting the reset threshold voltage and the delay time accurately.

The DS1231S-20/T&R also features a reset output active low or high configuration as well as an optional open drain output stage. In open drain configuration, the external transistor must be connected to a positive supply to pull the reset output pin high, enabling the external transistor to act as an active switch. The DS1231S-20/T&R is available in a variety of package options, all of which are RoHS-compliant.

The DS1231S-20/T&R has many advantages in the field of power management. Its low operating current, high accuracy, and adjustable reset time delay make it ideal for applications where reliability and accuracy are paramount. The wide operating range makes it suitable for a variety of systems, including those operating at a range of voltages and temperatures. Additionally, its open drain configuration simplifies prototyping and allows for easy design integration of reset systems.

In conclusion, the DS1231S-20/T&R is a highly reliable and accurate microprocessor supervisory circuit. It is suitable for a variety of applications, including system backplanes, motherboards, and other power management systems. Its low operating current and adjustable reset time delay make it especially useful for designs which need to be reliable in order to avoid system failures. The open drain configuration simplifies the prototyping process and allows for easy integration with existing circuitry.

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