MAX809(复位芯片).pdfVIP

MAX809 Series, MAX810 Series Very Low Supply Current 3−Pin Microprocessor Reset Monitors The MAX809 and MAX810 are cost−effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components MARKING are required. DIAGRAM The reset output is driven active within 10 sec of VCC falling 3 3 through the reset voltage threshold. Reset is maintained active for a SOT−23 xxx M timeout period which is trimmed by the factory after VCC rises above (TO−236) 1 CASE 318 the reset threshold. The MAX810 has an active−high RESET output 1 2 2 while the MAX809 has an active−low RESET output. Both devices are available in SOT−23 and SC−70 packages. The MAX809/810 are optimized to reject fast transient glitches on SC−70 the VCC line. Low supply current of 0.5 A (VCC = 3.2 V) makes these (SOT−323) xx M devices suitable for battery powered applications. CASE 419 Features 1 • Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V