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MAX803MEXR-T

Name: MAX803MEXR-T
Rating: 4.7 (12 reviews)

IC SUPERVISOR 1 CHANNEL SC70-3

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Mfr。パート #MAX803MEXR-T
パッケージ SC-70-3
データシート
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仕様

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	Simple Reset/Power-On Reset
NumberofVoltagesMonitored	1
Voltage-Threshold	4.38V
Output	Open Drain or Open Collector
Reset	Active Low
ResetTimeout	140ms Minimum
OperatingTemperature	-40°C ~ 125°C (TA)
MountingType	Surface Mount
Package/Case	SC-70, SOT-323

概要

Description

The MAX803MEXR-T is a precision voltage monitor designed to ensure the safe operation of microprocessors and digital systems by providing a reset signal during power-up, power-down, and brownout conditions. It features a fixed, adjustable reset threshold voltage, typically around 2.63V, and operates with a supply voltage range of 1.8V to 5.5V. The device has a fast response time, making it suitable for applications that require rapid monitoring and reset capabilities.
This voltage supervisor is packaged in a compact SOT23-5 format, making it ideal for space-constrained designs. It includes an active low reset output, which remains low when the supply voltage falls below the set threshold. The MAX803MEXR-T is commonly used in battery-operated devices, automotive systems, and other electronic applications where reliable operation is critical. Its low power consumption and high reliability contribute to the overall efficiency of the system it supports.

Features

The MAX803MEXR-T is a low-voltage microprocessor supervisory circuit designed to monitor power supply levels and ensure proper operation of microcontrollers and digital systems. Key features include:
1. Voltage Monitoring: It has a fixed reset threshold voltage of 2.63V, making it suitable for 3V systems.
2. Reset Output: It provides a push-pull reset output that remains active during a power failure and for a specified time after power is restored.
3. Low Power Consumption: Designed for low power operation, it typically consumes just a few microamperes.
4. Temperature Range: Operates across a wide temperature range from -40°C to +85°C.
5. Compact Package: Available in a small 5-pin SOT-23 package, making it suitable for space-constrained applications.
6. Debounce Feature: Integrates a debounce time to avoid false reset signals from power supply noise.
These features make the MAX803MEXR-T ideal for use in battery-operated devices and various consumer electronics requiring reliable power management.

Package

The MAX803MEXR-T is packaged in a 5-pin SOT23 surface-mount package.

Pinout

The MAX803MEXR-T is a microprocessor supervisory circuit with a pin count of 5. Its primary functions include monitoring the power supply voltage and providing a reset signal to microcontrollers and other digital devices. The key pins and their functions are as follows:
1. VDD (Pin 1): Power supply input, typically connected to the power source.
2. GND (Pin 2): Ground reference.
3. RESET (Pin 3): Active low reset output, which goes low when the supply voltage falls below a specified threshold, ensuring the microcontroller resets.
4. RESET (Pin 4): Another RESET output that can also be used to monitor the reset state.
5. SENSE (Pin 5): Input for the voltage sensing threshold, which can be set based on the desired voltage level for reset activation.
The device is commonly used for system stability by preventing erratic behavior during power-up or brown-out conditions.

Manufacturer

The MAX803MEXR-T is manufactured by Analog Devices, Inc. (ADI). Founded in 1965, Analog Devices is a global company specializing in data conversion, signal processing, and amplification technologies. They design and manufacture a wide range of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in various applications, including communications, healthcare, automotive, and consumer electronics. The MAX803MEXR-T specifically is a microprocessor supervisory circuit that provides features like voltage monitoring and reset functions to ensure reliable operation in electronic systems. Analog Devices is known for its innovation and high-performance products in the semiconductor industry.

Application

The MAX803MEXR-T is a microprocessor supervisory circuit designed for power management and monitoring applications. Its primary application areas include battery-operated devices, power supply monitoring, and system reset functions. It ensures proper operation by providing low voltage detection, reset generation, and watchdog timer features. Other applications include portable electronics, embedded systems, and automotive electronics where reliable power management and fault detection are critical.

Equivalent

The MAX803MEXR-T is a voltage supervisor with a specific threshold. Equivalent products include the MCP809, TPS3808, and S-8053 series from various manufacturers. Check the exact specifications for voltage thresholds and features to ensure compatibility. Always verify the pin configuration and operating conditions before substitution.