ACE809

3-Pin Microprocessor Reset Circuits

VER 1.3

1

Description

The ACE809 is a cost-effective system supervisor Integrated Circuit (IC) designed to monitor VCC in

digital and mixed signal systems and provide a warning signal when the system power supply is out of

working range, and a reset signal to the host processor when necessary. No external components are

required.

The reset output is driven active within 20μsec of VCC falling through the reset voltage threshold. Reset

is maintained active after VCC rises above the reset threshold. The ACE809 has an active-low RESET

output. The output of the ACE809 is guaranteed valid down to VCC=1V.

The ACE809 is characterized for operation from -40℃ to 85℃, junction temperature. The ACE809 is

optimized to reject fast transient glitches on the VCC line. Low supply current of 7μA (VCC=3.3V) makes

these devices suitable for battery powered applications. The output voltages range from 1.7V to 4.5V in

100mV increments. Standard voltage versions are 2.30, 2.63, 2.93, 3.08, 4.0, 4.38, and 4.63V.

Features

Application

Absolute Maximum Ratings

(1)

Parameter

Symbol

Max

Unit

Supply Voltage

5.5

V

Output Voltage

RESET -0.3 to (Vcc+0.3)

V

Input Current

20

mA

Output Current

20

mA

Power Dissipation

Internally Limited

(3)

Output short circuit duration

Infinite

Thermal resistance junction to ambient

θ

JA

230

℃/W

Operating Temperature Range

-40~85

℃

Operating junction temperature range

0 to 125

℃

Storage temperature range

-60 to 150

℃