Details

---

BUY MAX705CSA-T https://www.utsource.net/itm/p/205601.html
Low-Cost, µP Supervisory Circuits

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Operating Voltage	Vcc	-	2.1	-	5.5	V
Standby Current	ISB	Vcc = 5V, fosc = 32kHz	-	1.0	-	μA
Active Current	IOP	Vcc = 5V, fosc = 32kHz	-	30	-	μA
Reset Output Low Voltage	VRL	IL = 10mA	-	0.4	-	V
Reset Output High Voltage	VRH	IL = -100μA	-	Vcc-0.2	-	V
Reset Timeout Period	tR	Vcc = 2.1V to 5.5V, fosc = 32kHz	160	-	240	ms
Manual Reset Pulse Width	tMR	Vcc = 2.1V to 5.5V, fosc = 32kHz	50	-	-	ms
Watchdog Timeout Period	tWD	Vcc = 2.1V to 5.5V, fosc = 32kHz	1.6	-	2.4	s

Instructions for Using the MAX705CSA-T

1. Power Supply:

   • Connect the Vcc pin to the power supply (2.1V to 5.5V).
   • Connect the GND pin to ground.

2. Reset Output:

   • The RESET pin is active low and will assert a reset signal when the power supply voltage drops below the threshold or when a watchdog timeout occurs.
   • Ensure that the reset output is connected to the reset input of the microcontroller or other device you wish to control.

3. Manual Reset:

   • Apply a low pulse to the MR (Manual Reset) pin to manually trigger a reset. The pulse width should be at least 50ms.

4. Watchdog Timer:

   • The watchdog timer will reset the system if it is not periodically cleared by the microcontroller. The typical timeout period is 1.6 to 2.4 seconds.
   • To clear the watchdog timer, pull the WD (Watchdog) pin low for at least 100μs before the timeout period elapses.

5. Standby Mode:

   • To enter standby mode, set the STBY (Standby) pin high. In this mode, the current consumption is minimized.
   • To exit standby mode, set the STBY pin low.

6. Capacitors:

   • Place a 0.1μF ceramic capacitor close to the Vcc and GND pins to filter out noise and provide stable operation.
   • A 10μF tantalum capacitor can be added between Vcc and GND for additional filtering.

7. Temperature Range:

   • The device is designed to operate over a temperature range of -40°C to +85°C.

8. Handling Precautions:

   • Handle the device with care to avoid static damage. Use proper ESD protection measures.
   • Do not exceed the maximum ratings specified in the datasheet.

9. Storage:

   • Store the device in a dry, cool place to prevent moisture damage.

By following these instructions, you can ensure reliable operation of the MAX705CSA-T in your application.

(For reference only)