Product Overview

Product Overview
CAT872: Dual Input Reset Generator
For complete documentation, see the data sheet
Product Description
CAT871, CAT872 are dual input reset generators designed to restart microprocessor and microcontroller based systems when the
watchdog timer or other resetting mechanisms have become disabled or failed.
CAT871, CAT872 monitor two inputs and output an active low reset pulse after both inputs have been active (logic low) for a factory
preset minimum time. The reset pulse width is 2.2 ms for CAT871 and 70 ms for CAT872. Releasing either input from its active state
before the minimum timeout period resets the internal timer and both inputs must return to being active before the timer will restart
with a fresh count down.
CAT871, CAT872's open drain output is capable of sinking up to 3 mA of current and may be wire-OR'd with other open drain
devices to drive a common reset input.
Features
Benefits
• Ultra Low Quiescent Current: 10 nA (typical)
• Schmitt Trigger Inputs
• 8 Factory Preset Delay Times from 0.5 s to 5 s to Choose
From
• Operate on 1.65 V to 5.5 V Power Supplies
• Small µLLGA-6 Package: 1.45 x 1.0 x 0.4 mm
• These Devices are Pb-Free, Halogen Free/BFR Free and are
RoHS Compliant
• Low Power Consumption
• Low Sensitivity to Noise
• Flexibility
End Products
Part Electrical Specifications
Product
Compliance
Status
Voltages
Monitored
VCC Max
(V)
V(TO) Typ
(V)
IQ Typ
(µA)
Reset
Active
State
Reset
Timer
Manual
Reset
Watchdog
Timer
Package
Type
CAT872-30ULGT3
Pb-free
Active
0
5.5
-
0.05
Low
Yes
Yes
No
ULLGA-6
Active
0
5.5
-
0.05
Low
Yes
Yes
No
ULLGA-6
Halide free
CAT872-50ULGT3
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016