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ACE Technology - 3-Pin Microprocessor Reset Circuits

Numéro de référence ACE809
Description 3-Pin Microprocessor Reset Circuits
Fabricant ACE Technology 
Logo ACE Technology 





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ACE809 fiche technique
 
ACE809                                                                                                                                                                               
                                              Technology
3-Pin Microprocessor Reset Circuits
Description
The ACE809 microprocessor supervisory circuits can be used to monitor the power supplies in
microprocessor and digital systems. They provide s reset to the microprocessor during power-up,
power-down and brown-out conditions.
The function of the ACE809 is to monitor the VCC supply voltage, and assert a reset signal whenever this
voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for
240ms after VCC rises above the threshold. The ACE809 has an active-low RESET output. The output of
the ACE809 is guaranteed valid down to VCC =1V. The device is available in a SOT-23-3L package.
The ACE809 is optimized to reject fast transient glitches on the VCC line. Low supply current of 25µA,
(VCC=3.3V) makes these devices suitable for battery powered applications.
Features
Precision Vcc Monitor for 3.0V,3.3V and 5.0V Supplies
140ms Guaranteed Minimum RESET Output Duration
RESET Output Guaranteed to Vcc=1.0V
Low 25μA Supply Current.
Vcc Transient Immunity.
No External Components.
Application
Embedded systems
Computers
Critical μP Power Supply Monitoring
Battery Powered equipment
Absolute Maximum Ratings
Parameter
Supply Voltage
Output Voltage
Symbol Max Unit
VCC 5.5 V
RESET -0.3 to (Vcc+0.3) V
Input Current
20 mA
Output Current
IOUT 20 mA
Power Dissipation
PD Internally Limited
Thermal resistance junction to ambient
SOT-23-3
θJA
230 /W
Operating junction temperature range TJ
0 to 125
Storage temperature range
TSTG
-60 to 150
Note 1: Exceeding these rating could cause damage to the device. All voltages are with respect to Ground. Currents are positive
into, negative out of the specified terminal.
Note 2: Voltage values are with respect to the anode terminal unless otherwise noted.
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