MAX707 Datasheet, PDF (1/10 Pages) ON Semiconductor – UP Supervisory Circuits

MAX707, MAX708
mP Supervisory Circuits
The MAX707/708 are cost−effective system supervisor circuits
designed to monitor V_CC in digital systems and provide a reset signal
to the host processor when necessary. No external components are
required.
The reset output is driven active within 20 msec of V_CC falling
through the reset voltage threshold. Reset is maintained with 200 mS
of delay time after V_CC rise above the reset threshold. The
MAX707/708 have a low quiescent current of 12 mA at V_CC = 3.3 V,
an active−high RESET and active−low RESET with a push−pull
output. The output is guaranteed valid down to V_CC = 1.0 V. The
MAX707/708 have a Manual Reset MR input and a +1.25 V threshold
detector for power−fail input PFI. These devices are available in a
Micro8 and SOIC−8 package.
Features
• Precision Supply−Voltage Monitor
MAX707: 4.63 V Reset Threshold Voltage
MAX708: Standard Reset Threshold Voltages (Typical):
4.38 V, 3.08 V, 2.93 V, 2.63 V
• Reset Threshold Available from 1.6 V to 4.9 V with 100 mV
Increments (Factory Option)
• 200 mS (Typ) Reset Timeout Delay
• 12 mA (V_CC = 3.3 V) Quiescent Current
• Active_High and Active_Low Reset Output
• Guaranteed RESET_L and RESET Output Valid to V_CC = 1.0 V
• Voltage Monitor for Power−Fail or Low−Battery Warning
• 8 Pin SOIC or Micro8 Package
• Pb−Free Packages are Available
Applications
• Computers
• Embedded System
• Battery Powered Equipment
• Critical mP Power Supply Monitor
© Semiconductor Components Industries, LLC, 2005
1
August, 2005 − Rev. 4
http://onsemi.com
MARKING
DIAGRAMS
8
8
Micro8t
CUA SUFFIX
xxx
AYW
CASE 846A
G
1
1
xxx = Specific Device Code
A
= Assembly Location
Y
= Year
W
= Week
G
= Pb−Free Package
8
1
SOIC−8
ESA SUFFIX
CASE 751
8
xxxxx
ALYWG
G
1
xxxxx = Specific Device Code
AL = Assembly Lot Code
Y
= Year
W
= Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONFIGURATION
Micro8
RESET 1
RESET 2
MR 3
V_CC 4
8 NC
7 PFO
6 PFI
5 GND
(Top View)
SOIC−8
MR 1
8 RESET
V_CC 2
GND 3
7 RESET
6 NC
PFI 4
5 PFO
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
Publication Order Number:
MAX707/D