PT7M7809STEX for Precision Supply-voltage Monitor

Quick Details D/C: NEW Package: TO-236-3, SC-59, SOT-23-3, TO-236-3, SC-59, SOT-23-3 Model Number: PT7M7809STEX Type: Other, Simple Reset/Power-On Reset Brand Name: ASCO Place of Origin: American Samoa Part Number: PT7M7809STEX Part Status: Active Mounting Type: Surface Mount Operating...

Product Details

Quick Details

  • D/C: NEW

  • Package: TO-236-3, SC-59, SOT-23-3, TO-236-3, SC-59, SOT-23-3

  • Model Number: PT7M7809STEX

  • Type: Other, Simple Reset/Power-On Reset

  • Brand Name: ASCO

  • Place of Origin: American Samoa

  • Part Number: PT7M7809STEX

  • Part Status: Active

  • Mounting Type: Surface Mount

  • Operating Temperature: -40°C ~ 85°C (TA)

  • Number of Voltages Monitored: 1

  • Output: Push-Pull, Totem Pole

  • Reset: Active Low

  • Voltage - Threshold: 2.93V


The PT7M78xx family microprocessor ( µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions. 

The main functions are: 

1. Asserting reset output during power-up, power-down and brownout conditions for µP system. 

2. Detecting power failure or low-battery conditions with a 1.25V threshold detector. 

3. Watchdog functions 4. Manual reset.


 • Power-supply circuitry in µP systems

Part Status



Simple Reset/Power-On Reset

Number of Voltages Monitored



Push-Pull, Totem Pole


Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold


Operating Temperature

-40°C ~ 85°C (TA)

Mounting Type

Surface Mount

Package / Case

TO-236-3, SC-59, SOT-23-3