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CAT853 Datasheet(PDF) 5 Page - Catalyst Semiconductor

Part # CAT853
Description  3-Pin Microprocessor Power Supply Supervisors
PDF  9 Pages
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Manufacturer  CATALYST [Catalyst Semiconductor]
Direct Link  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT853 Datasheet(HTML) 5 Page - Catalyst Semiconductor

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CAT853, CAT863, CAT859, CAT869
5
Doc No. 3026, Rev. B
© 2007 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
VALID RESET WITH VCC UNDER 1.0V
To ensure that the CAT859 and CAT869 RESET pin
is in a known state when VCC is under 1.0V, a >10kΩ
pull-down resistor between RESET pin and GND is
recommended.
CAT8x9
GND
VCC
Power
Supply
RESET
Figure 3. RESET Valid with VCC Under 1.0V
Figure 4. Bi-directional Reset Pin Interfacing
CAT8x9
GND
VCC
Power
Supply
RESET
Buffered
RESET
BUF
RESET
INPUT
GND
Bi-directional
I/O Pin
µP
(For example:
68HC11)
VCC
BI-DIRECTIONAL RESET PIN INTERFACING
The CAT859 and CAT869 can interface with μP/μC
bi-directional reset pins by connecting a 4.7kΩ resistor
in series with the CAT859 and CAT869 reset output and
the μP/μC bi-directional reset pin.



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