Processor Supervisor 2.66V 3/3.3/5V 3-Pin SOT-23 T/R

The ASM810 is cost effective 3.0V, 3.3V and 5.0V power supply supervisor circuits optimized for low-power micropr Deg Cessor (µP), micr Deg Controller (µC) and digital systems. They provide a reset output during power-up, power-down and brown-out conditions. They provide excellent reliability by eliminating external components and adjustments. The ASM809/810 are improved drop-in replacements for the Maxim MAX809/810 and feature 60% lower supply current. A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140ms after the supply has risen above the reset threshold. The ASM809 has an active-low RESET output that is guaranteed to be in the correct logic state for VCC down to 1.1V. The ASM810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC. Low supply current makes the ASM810 ideal for use in portable and battery operated equipment. The ASM809/ASM810 are available in a compact, industry standard 3-pin SOT23 package.

• Monitor 5V, 3.3V and 3V supplies
• 140ms min. reset pulse width
• Active-low reset valid with 1.1V supply (ASM809)
• Small 3-pin SOT-23 package
• No external components
• Specified over full temperature range -40°C to 105°C