Texas Instruments MCP809
The MCP809 has an active-low RESET output, while the MCP810 has an active-high RESET output. With a low supply current of only 15µA, the MCP809/810 are ideal for use in portable equipment. The MCP809/MCP810 are available in the 3-pin SOT23 package.| Part No. | MCP809 |
|---|---|
| Datasheet | MCP809 Download |
| Manufacturer |  Texas Instruments |
| Description | 3-Pin Microprocessor Reset Circuit |
| Buy | Stock & Price |
FEATURES
1●2 Precise Monitoring of 3V, 3.3V, and 5V Supply Voltages
● Fully specified over temperature
● 140ms min. Power-On Reset Pulse Width, 240ms Typical – Active-low RESET Output (MCP809) – Active-high RESET Output (MCP810)
● Specified RESET Output Valid for VCC≥1V
● Low Supply Current, 15µA typical
● Power supply transient immunity
APPLICATIONS
● Microprocessor Systems● Computers
● Controllers
● Intelligent Instruments
● Portable/Battery-Powered Equipment
● Automotive
DESCRIPTION
The MCP809/810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, powerdown and brown-out conditions. The function of the MCP809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold. Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.
