CAX809STBI-T3 ON Semiconductor, CAX809STBI-T3 Datasheet - Page 7

• Manufacturer Part Number: CAX809STBI-T3
• Description: Supervisory Circuits SUP PUSH-PULL ACT LOW
• Manufacturer: ON Semiconductor

Specifications of CAX809STBI-T3

• Rohs: yes
• Number Of Voltages Monitored: 4
• Monitored Voltage: 2.5 V, 3 V, 3.3 V, 5 V
• Output Type: Active Low, Push-Pull
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23-3
• Maximum Power Dissipation: 320 mW
• Supply Current (typ): 6 uA

Valid RESET with V
RESET pin and GND is recommended. For the CAT810, a pull−up resistor from RESET pin to V
Bi−directional Reset Pin Interfacing
CAT809/810 reset output and the mP/mC bi−directional reset pin.
CAT803 Open−Drain RESET Application
therefore needs a pull−up resistor on the output for proper
operation, as shown on Figure 11. An advantage of the
open−drain output includes the ability to “wire AND”
several outputs together to form an inexpensive logic circuit.
It is also possible to have the pull−up resistor connected to
a different supply which can be higher than the CAT803 V
pin. The value of the pull−up resistor is not critical in most
applications, typical values being between 5 kW and 10 kW.
To ensure that the CAT809 RESET pin is in a known state when V
The CAT809/810 can interface with mP/mC bi−directional reset pins by connecting a 4.7 kW resistor in series with the
The CAT803 features an open−drain RESET output and
Figure 8. RESET Valid with V
Power
Supply
CC
Under 1.0 V
CAT809
GND
V
Power
Supply
CC
RESET
CC
Figure 10. Bi−directional Reset Pin Interfacing
Under 1.0 V
CAT809
GND
V
CC
RESET
10 kW
Bi−directional
http://onsemi.com
I/O Pin
4.7 kW
CC
Power
Supply
7
Power
Supply
CC
RESET
INPUT
Figure 9. RESET Valid with V
is under 1.0 V, a >10 kW pull−down resistor between
BUF
Figure 11. Typical CAT803 Open−Drain
GND
V
mP
CC
CAT810
GND
V
CC
CAT803
GND
RESET
Circuit Configuration
V
Buffered
RESET
CC
RESET
(For example:
68HC11)
CC
5 kW
CC
is needed.
10 kW
Under 1.1 V
RESET
INPUT
GND
V
mP
CC