Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The MAX6749KA is a low-power, microprocessor (µP) monitoring circuit designed to monitor single- or dual-supply system voltages ranging from 1.575V to 5V, providing stable reset output and watchdog functionality. These devices trigger a reset when the VCC supply voltage or RESET IN drops below the reset threshold or when the manual reset is pulled low. After VCC and RESET IN rise above the reset threshold, the reset signal remains active for one reset timeout cycle. The reset function is not affected by power supply transients.

The MAX6749KA features a factory-preset reset threshold with ±2% accuracy, ranging from 1.575V to 5.0V in 100mV increments.

The reset and watchdog delays can be adjusted via external capacitors. The MAX6749KA includes a watchdog select input pin that can extend the watchdog timeout period by up to 128 times.

The MAX6749KA offers push-pull or open-drain/RESET output. The MAX6749KA is available in an 8-pin SOT23 package and operates within the automotive temperature range (-40°C to +125°C).

Product Features — MAX6749KA

Factory-preset reset threshold, range 1.575V to 5V, in 100mV steps

Adjustable reset threshold options  

Single/dual voltage monitoring  

Capacitor-adjustable reset timeout period  

Capacitor-adjustable watchdog timeout period  

Minimum/maximum (with window) watchdog options  

Manual reset input option  

Guaranteed normal output of /RESET when VCC ≥ 1V  

3.7µA supply current  

Push-pull or open-drain/RESET output options  

Immune to power supply transients

Small size, 8-pin SOT23 package

Product parameters — MAX6749KA

Type: Simple reset/power-on reset  

Number of monitored voltages: 1  

Voltage - threshold: Adjustable/selectable  

Output: Open-drain or open-collector  

Reset: Low active  

Reset timeout: Minimum 5.692ms  

Operating temperature: -40°C to 125°C (TA)  

Mounting type: Surface mount  

Applications — MAX6749KA

Automotive

Battery-powered computers/controllers

Computers

Precise µP monitoring

Embedded controllers

Smart meters

Medical devices

Portable devices

Set-top boxes

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.