MAX809STR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	2.93V
Operating Temperature:	-40°C ~ 105°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)
Base Part Number:	MAX809

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The MAX809STR is a microcontroller supervisor designed for embedded applications. This device monitors system power for under-voltage, over-voltage and power-on reset protection. It combines a low voltage detector (LVD) and voltage supervisor in a single package, and eliminates external components for most applications. The device is designed to supply reset and controlled power-on sequences in 8- and 16-bit microcontroller-based systems.

Applications

The MAX809STR is commonly used in applications such as motor drives and control, communications, automotive, industrial, and medical systems. It is ideal for single- and multiple-microcontroller based systems, and can be used to program and power on multiple microcontrollers at specific times. It can also be used to help ensure a proper master/slave relationship between multiple microcontrollers in a system. The device features an active low voltage output that is well suited for supplying reset and controlled power-on sequenced signals.

Working Principle

The MAX809STR uses an input voltage havin range of 1.2V to 5.5V as reference voltages to initiate reset and controlled power-on sequences. The input voltage is monitored by the monitoring circuit, which then sends a signal to the power system control circuitry when the input voltage drops below the reset threshold or goes above the reset threshold. The power system control circuitry is then responsible for initiating the sequence of power system reset and power-on sequences.The POWER_ON signal is generated when the input voltage is above the power-on threshold and the reset signal is generated when the input voltage is below the reset threshold. The reset signal ensures that any system processes or actions will be halted, allowing the system to be safely reset. The POWER_ON signal enables the microcontroller to start powering up the system and will often be accompanied by a delay circuit, which is activated once the POWER_ON signal is received, so that the microcontroller has sufficient time to start up and be ready to execute instructions.The MAX809STR also features an LVD reset for extra protection against under-voltage conditions. This reset signal will be generated when the input voltage goes below the LVD reset threshold. Once the voltage is restored the reset signal is removed, allowing the system to resume normal operation.

Conclusion

The MAX809STR is a versatile and reliable microcontroller supervisor, offering reset and controlled power-on sequences in 8- and 16-bit microcontroller-based systems. Its low voltage detection and controlled power-on sequencing capabilities make it ideal for a variety of applications such as motor drives and control, communications, automotive, industrial, and medical systems. It can help ensure a proper master/slave relationship between multiple microcontrollers and can help prevent any unnecessary damage to the system due to under-voltage or over-voltage conditions.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description