SGM811-TXKA4/TR

The SGM811/SGM812 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. The SGM811/SGM812 is designed to monitor seven different voltages; these voltages have been selected for the effective monitoring of 1.8V, 2.5V, 3V, 3.3V and 5V supply voltage levels. They provide a reset output during power-up, powerdown and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with VCC as low as 1V. The SGM811 provides an active low reset signal ( RESET ) while the SGM812 provides an active high signal (RESET) output. The SGM811/SGM812 has a manual reset input. The manual reset function is very useful, especially if the circuit in which the SGM811/SGM812 is operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system. The devices come in SOT-143 and SOT-23-5 packages.

Applications

• Microprocessor Systems
• Controllers
• Intelligent Instruments
• Automotive Systems
• Safety Systems
• Portable Instruments

Key features

• Superior Upgrade for MAX811/MAX812 and ADM811/ADM812 Specified Over Temperature
• Low Power Consumption (13μA TYP)
• Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V and 5V Options Reset Assertion Down to 1V VCC
• 150ms Min Power-On Reset Logic Low RESET Output (SGM811) Logic High RESET Output (SGM812)
• Manual Reset Input
• Green SOT-143 and SOT-23-5 Packages