The MAX708RCSA+T requires careful layout and placement to minimize noise and ensure optimal performance. It is recommended to place the device close to the battery, use a solid ground plane, and keep the input and output traces short and separate. Additionally, it is recommended to use a 10uF capacitor between the VCC and GND pins to filter out noise.
The values of R1 and R2 resistors depend on the desired reset threshold voltage and the type of battery used. A general guideline is to choose R1 and R2 such that the reset threshold voltage is around 2.5V to 3.5V for most battery types. The datasheet provides a formula to calculate the resistor values based on the desired reset threshold voltage.
The MAX708RCSA+T has an operating temperature range of -40°C to +125°C. However, it is recommended to operate the device within a temperature range of -20°C to +85°C for optimal performance and reliability.
Yes, the MAX708RCSA+T can be used with rechargeable batteries. However, it is recommended to add a diode in series with the battery to prevent backflow of current during charging. Additionally, the reset threshold voltage should be set to a value that is higher than the fully charged voltage of the battery to prevent false resets.
To ensure that the MAX708RCSA+T is reset correctly during power-up, it is recommended to add a capacitor between the VCC and RST pins. This capacitor should be sized such that it takes longer to charge than the internal reset timer of the device. This ensures that the device is reset correctly during power-up.
MAX708RCSA+T datasheet
by Maxim Integrated Products
