© Semiconductor Components Industries, LLC, 2012
April, 2012 − Rev. 7
1 Publication Order Number:
CAT705/D
CAT705, CAT706, CAT813
mP Supervisory Circuits
Description
The CAT705, CAT706, and CAT813 provide reset and monitoring
functions for the electronic systems. Each device monitors the system
voltage and maintains a reset output until that voltage reaches the
device’s specified trip value and then maintains the reset output active
condition until the device’s internal timer allows the system power
supply to stabilize.
The devices have a watchdog input which can be used to monitor a
system signal and causes WDO to go low if the signal fails to change
state prior to a timeout condition.
The supervisory circuits provide a MR input which initiates a reset if
pulled low. The CAT705 and CAT706 provide an active low RESET
output. The CAT813 provides an active high RESET output.
There is a secondary supply monitor (PFI) included for power−fail
warning.
Features
• Reset Guaranteed Valid for 1.0 V V
CC
• 6 mA Supply Current
• 200 ms Reset Pulse Width
• Watchdog Timer Function 1.6 s Timeout
• Accurate Brownout Detection Reset in 3.0, 3.6, and 5.0 Volt Systems
• Secondary Low Supply Monitoring on PFI Input
• Pin and Function Compatible with the
MAX705/MAX706/MAX813L Products
• Operating Range from −40°C to +85°C
• SOIC 8−lead and MSOP 8−lead Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
• Microprocessor and Microcontroller Based Systems
• Instrument and Control Systems
• Portable Equipment
http://onsemi.com
PIN CONFIGURATIONS AND
MARKING DIAGRAMS
GND
PFO
WDI
V
CC
MR
WDO
RESET *
1
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
ORDERING INFORMATION
SOIC−8
V SUFFIX
CASE 751BD
MSOP−8
Z SUFFIX
CASE 846AD
PFI
SOIC−8 (V) (Top View)
MSOP−8 (Z) (Top View)
PFI
GND
V
CC
MR
PFO
RESET *
WDO
WDI
1
(* RESET for CAT813)
L = Assembly Location Code
4 = Lead Finish NiPdAu
A = Product Revision: Fixed as “A”
CATxxxV = Specific Device Code
= (CAT705V = CAT705 SOIC)
= (CAT706V = CAT706 SOIC)
= (CAT813V = CAT813 SOIC)
I = Temperature Range (I = Industrial)
Y = Production Year (Last Digit)
M = Production Month (1−9, O, N, D)
ALND = Last Four Assembly Lot Number Digits
L4A
CAT705VI
YMALND
ABRx = Specific Device Code
= (ABRT = CAT705 MSOP)
= (ABRT = CAT706 MSOP)
= (ABRS = CAT813 MSOP)
Y = Production Year (Last Digit)
M = Production Month (1−9, O, N, D)
Z = Product Revision
ABRx
YMZ
