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TCM809

TelCom Semiconductor
Part Number TCM809
Manufacturer TelCom Semiconductor
Description 3-PIN UP RESET MONITORS
Published Apr 23, 2005
Detailed 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,...
Datasheet PDF File TCM809 PDF File

TCM809
TCM809

Overview
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.
2 3 4 5 6 7 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: The "X" denotes a suffix for VCC threshold - see table below.
RESET TCM809 GND Suffix GND Reset VCC Threshold (V) 4.
63 4.
38 3.
08 2.
93 2.
63 PIN CONFIGURATION *SOT-23B-3 L M T S R GND 1 TCM809xENB TCM810xENB 3 VCC RESET (RESET) 2 NOTE: *SOT-23B-3 is equivalent to JEDEC (TO-236) ** () is for TCM810 TCM809/810-04 8/29/96 8 5-15 TELCOM SEMICONDUCTOR, INC.
PRELIMINARY INFORMATION 3-PIN µP RESET MONITORS TCM809 TCM810 ABSOLUTE MAXIMUM RATINGS* Supply Voltage (VCC to GND) .
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