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10.9. Max809
10.9.1. General Description
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 are required.
The reset output is driven active within 10 _sec of VCC falling through the reset voltage
threshold. Reset is aintained active for a timeout period which is trimmed by the factory
after VCC rises above the reset threshold. The MAX810 has an active high RESET
output while the MAX809 has an active low RESET output. Both devices are available
in SOT 23 and SC 70 packages.
10.9.2. Features
Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
Four Guaranteed Minimum Power On Reset Pulse Width Available (1 ms, 20
ms, 100 ms, and 140 ms)
RESET Output Guaranteed to VCC = 1.0 V.
Low Supply Current
Compatible with Hot Plug Applications
VCC Transient Immunity
No External Components
Wide Operating Temperature: 40°C to 105°C
Pb Free Packages are Available
10.9.3 Absolute Maximum Ratings
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