VESTEL MB37, Service Manual

Page: 73 / 111

16.16.3 Absolute Maximum Ratings
16.16.4 Pinning
16.17 MAX809LTR
16.17.1 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
~200msec of VCC falling through the reset voltage threshold. Reset is maintained 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.
The MAX809/810 are optimized to reject fast transient glitches on the VCC line. Low
supply current of 0.5 A (VCC = 3.2 V) makes these devices suitable for battery powered
applications.
16.17.2 Features

Precision VCC Monitor for 1.5 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