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FM803LS3X Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part # FM803LS3X
Description  3-Pin 關C Supervisor Device
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FM803LS3X Datasheet(HTML) 1 Page - Fairchild Semiconductor

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FM803 Rev. C.3
FM803
3-Pin
µC Supervisor Device
General Description
The FM803 is a supervisory device designed to monitor power
supply or other system voltage. FM803 generates a reset pulse
whenever the voltage being monitored is out of tolerance. Once
asserted, the reset pulse is guaranteed to be valid for a minimum
of 140ms (256ms typical ). The reset output of FM803 is of active
low Open-Drain type and has an internal pull-up resistor.
Several threshold voltages are offered to accommodate 5.0V,
3.3V, 3.0V and 2.7V system voltages.
These devices are offered in space saving 3-pin SOT23 and SC70
packages.
Typical Operating Circuit
October 2002
Features
I Automatic reset generation on power-up
I Minimum 140 ms reset pulse
I Internal 5kΩ pull-up resistor
I Other reset pulse choices available: 32 - 256 ms
I Operating temperature
-40
°C to + 105°C (SOT-23)
-40
°C to +85°C (SC70)
I Choice of Reset Thresholds: 4.63V, 4.38V, 4.00V, 3.08V,
2.93V, 2.63V
I SOT23-3 and SC70-3 Packages
© 2000 Fairchild Semiconductor International
Connection Diagram
GND
VCC
/RESET
1
FM803
2
3
SC70-3 & SOT23-3 Packages
1
FM803
Controller
2
3
VCC
GND
/RESET


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