AIC811/AIC812
Reset Circuits with Manual Reset Input


Analog Integrations Corporation Si-Soft Research Center DS-811P-03 010405
3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1
null FEATURES
null Ultra Low Supply Current 1µA(typ.)
null Guaranteed Reset Valid to Vcc=0.9V
null Available in two Output Types: Push-Pull Active
Low (AIC811), Push-Pull Active High (AIC812)
null 140ms Min. Power-On Reset Pulse Width
null Internally Fixed Threshold 2.3V, 2.6V, 2.9V,
3.1V, 4.0V, 4.4V, and 4.6V
null Tight Voltage Threshold Tolerance: 1.5%
null Low profile Package: SOT-23-5

null APPLICATIONS
null Notebook Computers
null Digital Still Cameras
null PDAs
null Critical Microprocessor Monitoring
null DESCRIPTION
AIC811/AIC812 are low-power microprocessor (µP)
supervisory circuits used to monitor power supplies in
µP and digital systems. They provide applications with
benefits of circuit reliability and low cost by eliminating
external components. AIC811/AIC812 also offer a
manual reset input.

These devices perform as valid singles in applications
with Vcc ranging from 6.0V down to 0.9V. The reset
signal lasts for a minimum period of 140ms whenever
VCC supply voltage falls below preset threshold. Both
AIC811 and AIC812 were designed with a reset
comparator to help identify invalid signals, which last
less than 140ms. The only difference between them is
that they have an active-low RESET output and
active-high RESET output, respectively.

Low supply current (1µA) makes AIC811/AIC812 ideal
for portable equipment. The devices are available in
SOT-23-5 package.

null TYPICAL APPLICATION CIRCUIT
VCC VCC
GNDGND
µP
RESET
INPUT
RESET
(RESET)
MR
V
CC

AIC811
(AIC812)
Pushbutton
Switch