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CAT808 Datasheet(PDF) 3 Page - Catalyst Semiconductor

No. de Pieza. CAT808
Descripción  Low-Power Precision Voltage Detector
Descarga  8 Pages
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Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
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CAT808 Datasheet(HTML) 3 Page - Catalyst Semiconductor

   
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CAT808
© 2006 Catalyst Semiconductor, Inc.
3
Doc. No. 3024 Rev. A
Characteristics subject to change without notice
OPERATION – VOLTAGE DETECTOR
The CAT808 has an active low output that asserts
(pulls low) when the supply voltage drops below the
detection threshold voltage (VDET). The open-drain
output requires an external pull-up resistor between
the output pin and the supply voltage (as shown in
the typical application diagram). On power-up, OUT
¯¯¯¯
is held active low until the supply voltage (VDD) rises
above VDET. While VDD is above VDET, OUT
¯¯¯¯ stays
high until VDD drops below VDET, then OUT
¯¯¯¯ once
again goes low.
BLOCK DIAGRAM
TIMING DIAGRAM
* Voltage of VDD below 1 volt will not be able to maintain low output.
PIN FUNCTIONS
Pin
Function
VDD
Voltage Input and Power Supply
GND
Ground Pin
OUT
¯¯¯¯
Active Low Open Drain output
NC
No Connect, the pin is electrically open
VOLTAGE
REFERENCE
OUT
VDD
TPLH
TPHL
VDET(MIN)
VDET(MIN)
VDET(MAX)
VDET
VDET(MAX)
VDET
OUT Slews with VDD
GND
VOH
VDD*
OUT


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