MICROCHIP MIC809MYC3-TR

The MIC809 and MIC810 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor-based systems. The function of these devices is to assert a reset if the power supply drops below a designated reset threshold level. Several different reset threshold levels are available to accommodate 3V, 3.3V, or 5V powered systems. The MIC809 has an active-low /RESET output, while the MIC810 offers an active-high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140 ms after VCC has risen above the designated reset threshold level. Having a push-pull output stage, the MIC809/810 do not require a pull-up resistor at the output. The MIC809/810 come in a 3-lead SOT-23 and SC-70 package. The MIC809 is also available with a shorter reset timeout (30 ms, minimum).

• Precision Voltage Monitor for 3V, 3.3V, or 5V Power Supplies
• /RESET Remains Valid with VCC as Low as 1.4V for the SOT-23
• /RESET Remains Valid with VCC as Low as 1V for the SC-70
• Typically Less Than 15 μA Supply Current for the SOT-23
• 5 μA Typical Supply Current for the SC-70
• 140 ms Minimum Reset Pulse Width Available
• Available in 3-Lead SOT-23 and SC-70 Packages

• Portable Equipment
• Intelligent Instruments
• Critical Microprocessor Power Monitoring
• Printers/Computers
• Controllers