DESCRIPTION

The DS1830 Reset Sequencer monitors the power supply for an in-tolerance condition and the pushbutton reset input for a manual reset. First a precision temperature-compensated reference and comparator circuit monitors the status of the power supply and when an out-of-tolerance condition is detected, an internal power fail signal is generated that forces the reset lines to go to an active state.

FEATURES

■ 5V (DS1830) or 3.3V (DS1830A) power-on reset

■ Excellent for systems that need power-on resets in a consistent sequence

■ Asserts resets during power transients

■ Pushbutton reset input for system override

■ Selectable reset timing

■ Reduces need for discrete components

■ Precision temperature-compensated voltage reference

■ 8-pin DIP, 8-pin SO, or space saving 8-pin µSOP

■ Operating temperature of -40°C to +85°C

■ Open-drain, active-low inputs