3-PIN UP RESET MONITORS
PRELIMINARY INFORMATION
1
TCM809 TCM810 3-PIN µP RESET MONITORS
FEATURES
s s s s s s s Precision VCC Monitor for 3.0V,...
Description
PRELIMINARY INFORMATION
1
TCM809 TCM810 3-PIN µP RESET MONITORS
FEATURES
s s s s s s s Precision VCC Monitor for 3.0V, 3.3V, 5.0V Nominal System V Supplies 140msec Guaranteed Minimum RESET, RESET Output Duration RESET Output Guaranteed to VCC = 1.0V (TCM809) Low 17µA Supply Current VCC Transient Immunity Small SOT-23B-3 Package No External Components
GENERAL DESCRIPTION
The TCM809 and TCM810 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 20msec of V CC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The TCM810 has an active-high reset output while the TCM809 has an active-low reset output. The output of the TCM809 is guaranteed valid down to V CC = 1V. Both devices are available in a SOT-23B-3 package. The TCM809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 17µA (VCC = 3.3V) makes these devices suitable for battery powered applications.
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TYPICAL APPLICATIONS
s s s s Computers Embedded Systems Battery Powered Equipment Critical µP Power Supply Monitoring
TYPICAL OPERATING CIRCUIT
VCC VCC VCC PROCESSOR RESET INPUT
ORDERING INFORMATION
Part No.
TCM809xENB TCM810xENB
Package
SOT-23B-3 SOT-23B-3
Temp. Range
– 40°C to +85°C – 40°C to +85°C
NOTE...
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