MCP809 Active Low 3-Pin Reset IC | TI.com

MCP809 (ACTIVE)

Active Low 3-Pin Reset IC

 

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.

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

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Parametrics Compare all products in Supervisor & reset ICs

 
Threshold Voltage 1 (Typ) (V)
Number of supplies monitored
VCC (Max) (V)
VCC (Min) (V)
Output driver type/reset output
Time Delay (ms)
Features
Rating
Operating temperature range (C)
Watchdog timer WDI (sec)
MCP809 LM809 LM810 TLV803 TLV809 TLV810 TLV853 TPS3809
2.93     2.63
2.93
3.08
4.38
4.63    
4.63     2.25
2.64
2.93
4.38    
2.25
2.64
2.93
4.55    
2.25
2.64
2.93
4.38    
4.38     2.25
2.64
2.93
4.55    
1     1     1     1     1     1     1     1    
5.5     5.5     5.5     6     6     6     6     6    
1.2     1     1     1.1     2     1.1     1     2    
Active-low
Push-pull    
Active-low
Push-pull    
Active-high
Push-pull    
Active-low
Open-drain    
Active-low
Push-pull    
Active-high
Push-pull    
Active-low
Open-drain    
Active-low
Push-pull    
240     240     240     200     200     200     200     200    
Ease-of-use     Ease-of-use     Ease-of-use     Ease-of-use     Ease-of-use     Ease-of-use     Ease-of-use     Ease-of-use    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 105     -40 to 105     -40 to 105     -40 to 125     -40 to 85     -40 to 125     -40 to 125     -40 to 85    
None     None     None     None     None     None     None     None