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CAT811LTBI-GT3 Datasheet(PDF) 2 Page - ON Semiconductor

Part # CAT811LTBI-GT3
Description  4-Pin Microprocessor Power Supply Supervisors with Manual Reset
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT811LTBI-GT3 Datasheet(HTML) 2 Page - ON Semiconductor

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CAT811, CAT812
http://onsemi.com
2
Table 1. THRESHOLD SUFFIX SELECTOR DESCRIPTION
Nominal Threshold Voltage
Threshold Suffix Designation
4.63 V
L
4.38 V
M
4.00 V
J
3.08 V
T
2.93 V
S
2.63 V
R
2.32 V
Z
Table 2. PIN DESCRIPTION
Pin Number
Pin Name
Description
CAT811
CAT812
1
1
GND
Ground.
2
RESET
Active LOW reset. RESET is asserted if VCC falls below the reset threshold and re-
mains low for at least 140 ms after VCC rises above the reset threshold.
2
RESET
Active HIGH reset. RESET is asserted if VCC falls below the reset threshold and re-
mains high for at least 140 ms after VCC rises above the reset threshold.
3
3
MR
Manual Reset Input. A logic LOW on MR asserts RESET. RESET remains active as
long as MR is LOW and for 140 ms after MR returns HIGH. The active low input has
an internal 20 kW pull−up resistor. The input should be left open if not used.
4
4
VCC
Power supply voltage that is monitored.
Figure 1. Block Diagrams
CAT812
RESET
+
RESET
&
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
CAT811
+
RESET
&
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
VCC
VCC
VCC
RESET
VCC
VCC
VCC
MR
MR


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