MCP809 Series

Microcontroller Supervisory Circuit w/ Push Pull Active Low

Catalog(4 parts)

Part	Type	Number of Voltages Monitored▲▼	Mounting Type	Supplier Device Package	Package / Case	Reset Timeout▲▼	Reset	Operating Temperature▲▼	Operating Temperature▲▼	Voltage - Threshold▲▼
Texas Instruments MCP809M3-4.38/NOPB Supervisor 1 Channel SOT-23-3	Simple Reset/Power-On Reset	1 ul	Surface Mount	SOT-23-3	SC-59, SOT-23-3, TO-236-3	0.14000000059604645 s	Active Low	105 °C	-40 °C
Texas Instruments MCP809M3-2.63/NOPB Supervisor 1 Channel SOT-23-3	Simple Reset/Power-On Reset	1 ul	Surface Mount	SOT-23-3	SC-59, SOT-23-3, TO-236-3	0.14000000059604645 s	Active Low	105 °C	-40 °C	2.630000114440918 V
Texas Instruments MCP809M3-2.93/NOPB Supervisor 1 Channel SOT-23-3	Simple Reset/Power-On Reset	1 ul	Surface Mount	SOT-23-3	SC-59, SOT-23-3, TO-236-3	0.14000000059604645 s	Active Low	105 °C	-40 °C	2.930000066757202 V
Texas Instruments MCP809M3-4.63/NOPB Supervisor 1 Channel SOT-23-3	Simple Reset/Power-On Reset	1 ul	Surface Mount	SOT-23-3	SC-59, SOT-23-3, TO-236-3	0.14000000059604645 s	Active Low	105 °C	-40 °C	4.630000114440918 V

Key Features

• * Holds microcontroller in reset until supply voltage reaches stable operating voltage

• * Resets microcontroller during power loss

• * Precision monitoring of 3V, 3.3V and 5V systems

• * Active low RESET pin (MCP809) or active high RESET (MCP810)

• * Push-pull output

• * Holds RESET for 350ms (typical)

• * RESET to VDD = 1.0V

• * Accuracy of +(-)125mV for 5V systems and +(-)75mV for 3V systems over temperature

• * 45uA typical operating current

• * Industrial (I): -40C to +85C

Description

The MCP809 is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. It also operates as protection from brown-out conditions when the supply voltage drops below a safe operating level. MCP809 has a CMOS push-pull output with active low reset and is available in a choice of seven different trip voltages. It operates over the extended industrial temperature range (-40°C/+85°C). MCP809 is available in a SOT23-3 package.