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FM809MS3X 数据表(PDF) 1 Page - Fairchild Semiconductor

部件名 FM809MS3X
功能描述  3-Pin UC Supervisor Circuits
Download  9 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

FM809MS3X 数据表(HTML) 1 Page - Fairchild Semiconductor

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©2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
August 2005
FM809/810 Rev. G
FM809/810
3-Pin µC Supervisor Circuits
General Description
The FM809/810 are supervisor circuits that monitor power
supply or other system voltages and issue 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). FM809xx offers active low push-pull
type of reset while FM810xx offers active high push-pull type.
Several threshold voltages are offered to accommodate 5.0V,
3.3V, 3.0V and 2.7V system voltages.
The low supply current (typically 2 µA)recommends FM809/810
devices for portable designs or wherever power saving is
primary.
These devices are offered in space saving 3-pin SOT23 and
SC70 packages.
Features
■ VTH voltages of 4.63V, 4.38V, 4.00V, 3.08V, 2.93V and 2.63V
■ RESET (FM809) or RESET (FM810) output
■ 140ms power-on RESET delay (minimum)
■ RESET operation guaranteed to 1.0V
■ Supply current only 2µA
■ No external components
■ Operating Range
– -40°C to +105°C (SOT23)
– -40°C to +85°C (SC70)
■ SOT23-3 and SC70-3 packages
Applications
■ Microcontrollers and Microprocessors
■ Appliances
■ Power-Supply Monitoring
■ Portable Equipment
■ Automotive Systems
Typical Operating Circuit
Connection Diagram
SOT23-3 & SC70-3Packages
FM809
µC
GND
VCC
VCC
GND
RESET
I/P
RESET
VCC
3
GND
RESET (809) or
RESET (810)
1
2
FM809/810


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