深圳市中立信电子科技有限公司

MAX809LTRG

Very Low Supply Current  3-Pin Microprocessor  Reset Monitors

监控电路 4.63V uP Reset

The MAX809LTRG 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 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.

MAX809LTRG 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

• These Devices are Pb−Free and are RoHS Compliant

MAX809LTRG Typical Applications

• Computers

• Embedded Systems

• Battery Powered Equipment

• Critical Microprocessor Power Supply Monitoring