FM1233DDS3X FAIRCHILD [Fairchild Semiconductor], FM1233DDS3X Datasheet - Page 5

• Manufacturer Part Number: FM1233DDS3X
• Description: 3-Pin ?C Supervisor Circuit
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

General Description
The FM1233D features a highly accurate voltage reference to
which V
is compared. Once V
is below the specified
CC
CC
threshold, it will drive the RESET line and continue to hold it low
until V
returns above the threshold and the time for the
CC
RESET pulse duration has expired. The FM1233D is immune to
short negative going transients on the V
line. The placement
CC
of a 0.1µF bypass capacitor as close as possible to the V
pin
CC
provides additional transient immunity.
For a V
value below 1.0V, the FM1233D does not sink very
CC
much current on the RESET pin. This is not a problem in most
systems since common devices are not functional in this range.
If it is desired for the FM1233D reset to be functional below this
range, use a 100K
pull-down resistor between RESET and
V
.
SS
5
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FM1233D Rev. D