Details

---

BUY MAX690ACSA+T https://www.utsource.net/itm/p/4641974.html
IC SUPERVISOR MPU 8-SOIC

Parameter	Description	Min	Typical	Max	Unit
Supply Voltage (Vcc)	Operating voltage range	2.1	-	5.5	V
Operating Temperature	Range for device operation	-40	-	85	°C
Watchdog Timeout Period	Time before watchdog timer resets	1.6	-	2.4	s
Oscillator Frequency	Internal oscillator frequency	37	-	43	kHz
Supply Current (Icc)	Quiescent current at Vcc = 5V	-	15	-	μA
Reset Output (RST)	Reset output low voltage	-	0.4	-	V
Reset Output (RST)	Reset output high voltage	-	Vcc-0.5	-	V
Input Voltage (VIN)	Input voltage range for reset	0.8	-	2.0	V
Output Drive Capability	Sink current per output	-	20	-	mA
Output Drive Capability	Source current per output	-	10	-	mA

Instructions for Using MAX690ACSA+T:

1. Power Supply:

   • Connect the Vcc pin to a power supply within the range of 2.1V to 5.5V.
   • Connect the GND pin to ground.

2. Reset Output:

   • The RST pin will go low when the input voltage (VIN) drops below the reset threshold (0.8V to 2.0V).
   • The RST pin will return high after the input voltage rises above the reset threshold and the watchdog timer times out.

3. Watchdog Timer:

   • The watchdog timer will reset the RST pin if it is not periodically cleared by a signal on the VIN pin.
   • The timeout period is typically 1.6 to 2.4 seconds.

4. Oscillator:

   • The internal oscillator operates at a frequency between 37kHz and 43kHz, which is used to time the watchdog function.

5. Input Signal:

   • Apply a periodic signal to the VIN pin to prevent the watchdog from resetting the RST pin.
   • Ensure the signal is within the valid input voltage range (0.8V to 2.0V).

6. Output Drive:

   • The RST pin can sink up to 20mA and source up to 10mA, allowing it to drive various reset circuits or microcontroller inputs.

7. Operating Temperature:

   • Ensure the device operates within the temperature range of -40°C to 85°C to maintain reliable performance.

8. Quiescent Current:

   • The device draws a quiescent current of approximately 15μA at Vcc = 5V, making it suitable for low-power applications.

By following these instructions, you can effectively integrate the MAX690ACSA+T into your circuit design for reliable reset and watchdog functionality.

(For reference only)