FM809 Fairchild Semiconductor, FM809 Datasheet

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FM809

Manufacturer Part Number
FM809
Description
3-Pin C Supervisor Circuits
Manufacturer
Fairchild Semiconductor
Datasheet

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©2002 Fairchild Semiconductor Corporation
FM809/810 Rev. F
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
I V
I RESET (FM809) or RESET (FM810) output
Typical Operating Circuit
Connection Diagram
TH
voltages of 4.63V, 4.38V, 4.00V, 3.08V, 2.93V and 2.63V
GND
V
CC
RESET (809) or
RESET (810)
SOT23-3 & SC70-3Packages
FM809
GND
FM809/810
RESET
1
2
1
I 140ms power-on RESET delay (minimum)
I RESET operation guaranteed to 1.0V
I Supply current only 2µA
I No external components
I Operating Range
I SOT23-3 and SC70-3 packages
Applications
I Microcontrollers and Microprocessors
I Appliances
I Power-Supply Monitoring
I Portable Equipment
I Automotive Systems
– -40°C to +105°C (SOT23)
– -40°C to +85°C (SC70)
3
V
CC
RESET
I/P
GND
V
µC
CC
October 2002
www.fairchildsemi.com

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FM809 Summary of contents

Page 1

... 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 µ ...

Page 2

... V FM810 Output High (RESET) V Note 1: Testing in production is 25°C only for FM8xxL/M/ Note 2 : RESET output is for FM809. RESET output is for FM810. Note 3 : Typical values are at 25°C. Note 4: Recommended minimum slew rate for the V FM809/810 Rev. F ESD Rating -0.3V to +6.0V Human Body Model -0 ...

Page 3

... V OL FM810 Output High (RESET Note 1: Testing in production is 25°C only for FM8xxL/M/ Note 2: RESET output is for FM809. RESET output is for FM810. Note 3: Typical values are at 25°C. FM809/810 Rev. F ESD Rating -0.3V to +6.0V Human Body model -0. 0.3V) Machine model ...

Page 4

... V drops to ground to ground, etc. When V OUT also falls below RESET 140 ms later required that a lower value than GND + 1.0V is needed on RESET signal during V on the device output (to GND for the FM809 FM810). 4 Function is below V CC rises above ...

Page 5

... FM809JP3X VJY FM809TP3X VTY FM809SP3X VSY FM809RP3X VRY Note 4: Devices listed above feature 250ms typical Reset Pulse width. Consult Fairchild sales for other reset pulse width options. FM809/810 Rev. F RESET Threshold (V) Output Type 4.63 Push-Pull, active LOW 4.38 Push-Pull, active LOW 4.00 Push-Pull, active LOW 3 ...

Page 6

... FM810JP3X ZJY FM810TP3X ZTY FM810SP3X ZSY FM810RP3X ZRY Note 5: Devices listed above feature 250ms typical Reset Pulse width. Consult Fairchild sales for other reset pulse width options. FM809/810 Rev. F RESET Threshold (V) Output Type 4.63 Push-Pull, active HIGH 4.38 Push-Pull, active HIGH 4.00 Push-Pull, active HIGH 3 ...

Page 7

... Physical Dimensions inches (millimeters) unless otherwise noted 0.021 0.015 0.120 0.105 0.079 0.071 FM809/810 Rev. F 0.055 0.098 0.047 0.083 0.0059 0.040 0.0035 0.031 0.010 0.005 0.004 0.001 PKG C L 0.76 0.95 LAND PATTERN RECOMMENDATION SOT-23 Package Dimensions FS Pkg Code AU 7 0-8˚ www.fairchildsemi.com ...

Page 8

... Fairchild Semiconductor Fairchild Semiconductor Americas Europe Customer Response Center Tel. 1-888-522-5372 Deutsch English Français Italiano FM809/810 Rev. F .087 (2.2) .071 (1.8) .043 (1.1) .032 (.80) .004 (.10) .016 (.40) .012 (.30) .052 (1.3) 0.65 0.65 0.5 ...

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