cat808ntfi-35 Catalyst Semiconductor, cat808ntfi-35 Datasheet - Page 3

• Manufacturer Part Number: cat808ntfi-35
• Description: Low-power Precision Voltage Detector
• Manufacturer: Catalyst Semiconductor

TIMING DIAGRAM
PIN FUNCTIONS
© 2007 Catalyst Semiconductor, Inc.
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 (V
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
voltage (V
V
then OUT
DET
, OUT
¯¯¯¯ once again goes low.
GND
¯¯¯¯
OUT
¯¯¯¯ stays high until V
V
Pin
NC
DD
DD
¯¯¯¯ is held active low until the supply
) rises above V
Function
Voltage Input and Power Supply
Ground Pin
Active Low Open Drain output
No Connect, the pin is electrically open
GND
OUT
DET
DD
* Voltage of V
. While V
V
drops below V
DET(MIN)
DET
). The open-
V
DET(MAX)
DD
DD
below 1 volt will not be able to maintain low output.
is above
V
DET
DET
,
T
PLH
OUT Slews with V
3
V
V
OH
DD
*
BLOCK DIAGRAM
DD
V
DD
REFERENCE
VOLTAGE
V
DET(MAX)
V
DET
T
V
PHL
DET(MIN)
Doc. No. 3024 Rev. B
OUT
CAT808