MAX803 Series,
NCP803 Series
Very Low Supply Current
3-Pin Microprocessor
Reset Monitor
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MARKING
DIAGRAM
The MAX803/NCP803 is a cost-effective system supervisor circuit
designed to monitor VCC in digital systems and provide a reset signal to
the host processor when necessary. No external components are
required.
3
The reset output is driven active within 10 msec of VCC falling
through the reset voltage threshold. Reset is maintained active for a
timeout period which is trimmed by the factory after VCC rises above
the reset threshold. The MAX803/NCP803 has an open drain
active-low RESET output. Both devices are available in SOT-23 and
SC-70 packages.
The MAX803/NCP803 is optimized to reject fast transient glitches
on the VCC line. Low supply current of 0.5 mA (VCC = 3.2 V) make
these devices suitable for battery powered applications.
3
SOT-23
(TO-236)
CASE 318
xxx MG
G
1
1
2
2
SC-70
(SOT-323)
CASE 419
xx MG
G
1
Features
xxx
M
= Specific Device Code
= Date Code
= Pb-Free Package
•ꢀPrecision V Monitor for 1.5 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V
CC
Supplies
G
•ꢀPrecision Monitoring Voltages from 1.2 V to 4.9 V Available
in 100 mV Steps
(Note: Microdot may be in either location)
•ꢀFour Guaranteed Minimum Power-On Reset Pulse Width Available
(1 ms, 20 ms, 100 ms, and 140 ms)
PIN CONFIGURATION
•ꢀRESET Output Guaranteed to VCC = 1.0 V
GND
1
•ꢀLow Supply Current
•ꢀVCC Transient Immunity
•ꢀNo External Components
V
CC
3
•ꢀWide Operating Temperature: -40°C to 105°C
•ꢀPb-Free Packages are Available
Typical Applications
2
RESET
SOT-23/SC-70
(Top View)
•ꢀComputers
•ꢀEmbedded Systems
•ꢀBattery Powered Equipment
•ꢀCritical Microprocessor Power Supply Monitoring
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
V
CC
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
V
V
CC
CC
R
pull-up
MAX803
NCP803
mP
RESET
C = 100 nF
RESET
GND
GND
0
0
Figure 1. Typical Application Diagram
©ꢀ Semiconductor Components Industries, LLC, 2007
October, 2007 - Rev. 4
1
Publication Order Number:
MAX803/D