Product
0
MCP809
  • MCP809
  • MCP809
  • MCP809

MCP809

ACTIVE

Active-low 3-pin reset IC

Texas Instruments MCP809 Product Info

1 April 2026 3

Parameters

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

2.93

Features

Ease-of-use, Undervoltage monitor only

Reset threshold accuracy (%)

5

Iq (typ) (mA)

0.015

Output driver type/reset output

Active-low, Push-Pull

Time delay (ms)

240

Watchdog timer WDI (s)

None

Supply voltage (min) (V)

1.2

Supply voltage (max) (V)

5.5

Operating temperature range (°C)

-40 to 105

Package

SOT-23 (DBZ)-3-6.9204 mm² 2.92 x 2.37

Features

  • 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

All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners.

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, power-down 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. The MCP809 has an active-low RESET output, while the MCP810 has an active-high RESET output.

Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.

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.

Subscribe to Welllinkchips !
Your Name
* Email
Popular Posts
Featured Parts More >
Submit a request
CONTACT US
Company address

WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK

Send Enquiry
SEND e-MAIL
Office hour from 9am to 6pm ,
Monday through Friday, UTC/GMT +8