MAX690A

Name: MAX690A
Rating: 4.5 (10 reviews)

MAX690A is a microprocessor supervisory circuit that monitors power and resets the microprocessor if necessary.

5,503 Effective Inventory

MAX690A

Effective Inventory5,503

MAX690A is a microprocessor supervisory circuit that monitors power and resets the microprocessor if necessary.

Manufacturer Part # : MAX690A
Package/Case: DIP8
Brand: MAXIM
Product Categories : Power Management Circuits

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MAX690A DataSheet

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Details

MAX690A is a versatile, low-power supervisor circuit manufactured by Maxim Integrated. It is designed to monitor the power supply voltage and reset the system when the voltage falls below a pre-set threshold. The MAX690A operates over a wide voltage range of 2.7V to 16.5V and has an adjustable voltage threshold with a typical accuracy of ±1.5%. This device features an active-low, push-pull reset output with an adjustable timeout period ranging from 1.25ms to 1.05s. It also includes a manual reset input which allows for external triggering of the reset signal. The MAX690A has a low quiescent current consumption of only 12μA, making it suitable for battery-powered applications where power efficiency is critical.Furthermore, the MAX690A is housed in a small 8-pin DIP or SO package, making it suitable for space-constrained applications. It is also rated for operation over a wide temperature range of -40°C to +85°C, ensuring reliability in various environments.In summary, the MAX690A is a highly reliable and flexible voltage supervisor circuit that provides robust reset functionality with low power consumption. Its wide voltage range, adjustable threshold, and timeout period, as well as its small form factor, make it a suitable choice for a wide range of applications that require voltage monitoring and system reset capabilities

Key Features

Low-power microprocessor supervisor circuit
Resets microprocessor during voltage dips
6µA quiescent current
Active-low reset output
Adjustable reset threshold
Watchdog timer
Manual reset input
Power-fail comparator
Available in 8-pin DIP and SOIC packages

Application

Computers and peripherals
Industrial control systems
Instrumentation
Telecommunications equipment
Consumer electronics

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification MAX690A PDF Download

FAQs

What is MAX690A?

The MAX690A is a microprocessor supervisory circuit designed by Maxim Integrated. It is used to monitor the power supply voltage of a microprocessor-based system and to maintain a controlled reset signal during power-up, power-down, and brownout conditions.

How Does MAX690A Work?

The MAX690A works by continuously monitoring the power supply voltage. When the voltage falls below a preset threshold, the MAX690A asserts the reset signal to ensure that the microprocessor and other system components operate reliably. It also provides an adjustable power-on reset pulse width, allowing flexibility in system initialization.

How Many Pins does MAX690A have and What are the Functions of the Pinout Configuration?

The MAX690A is available in various package options, including 8-pin DIP (Dual Inline Package) and SOIC (Small Outline Integrated Circuit). The pinout configuration typically includes:

VCC: Power supply input pin.
GND: Ground pin.
RESET: Open-drain reset output pin.
MR: Manual reset input pin.
Adjust: Pin for adjusting the power-on reset pulse width.

What are the Pros and Cons of MAX690A?

Pros:

Reliable Reset Control: Ensures reliable system reset during power transitions and voltage fluctuations.
Adjustable Reset Pulse Width: Provides flexibility in configuring the power-on reset pulse width.
Low Power Consumption: Operates with very low power, suitable for battery-powered systems.
Wide Voltage Range: Supports a wide supply voltage range, making it versatile for various applications.

Cons:

External Components: May require external components such as capacitors for proper operation.

Are There Any Equivalents/Alternatives to MAX690A for Recommendation?

The MAX809 from Maxim Integrated is a similar microprocessor supervisory circuit with additional features.
Alternatives to the MAX690A include the ADM708 from Analog Devices and the TC54 from Microchip Technology.

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