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DS1706SESA Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. DS1706SESA
Description  3.3V and 5.0V MicroMonitor
Download  12 Pages
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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DS1706SESA Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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FEATURES
 Halts and restarts an out-of-control
microprocessor
 Holds microprocessor in check during power
transients
 Automatically restarts microprocessor after
power failure
 Monitors pushbutton for external override
 Accurate 5%, 10% or 20% resets for 3.3V
systems and 5% or 10% resets for 5.0V
systems
 Eliminates the need for discrete components
 3.3V 20% tolerance for use with 3.0V
systems
 Pin-compatible with the MAXIM
MAX705/MAX706 in 8-pin DIP, 8-pin SOIC,
and
-SOP
 8-pin DIP, 8-pin SOIC and 8-pin
-SOP
packages
 Industrial temperature range -40
C to +85C
PIN ASSIGNMENT
DS1705 and DS1706_R/S/T
(*DS1706L and DS1706P)
PIN DESCRIPTION
PBRST
- Pushbutton Reset Input
VCC
- Power Supply
GND
- Ground
IN
- Input
NMI
- Non-maskable Interrupt
ST
- Strobe Input
RST
- Active Low Reset Output
*RST
- Active High Reset Output
(DS1706P and DS1706L only)
WDS
- Watchdog Status Output
DESCRIPTION
The DS1705/DS1706 3.3- or 5.0-Volt MicroMonitor monitors three vital conditions for a microprocessor:
power supply, software execution, and external override. A precision temperature compensated reference
and comparator circuit monitor the status of VCC at the device and at an upstream point for maximum
protection. When the sense input detects an out-of-tolerance condition, a non-maskable interrupt is
generated. As the voltage at the device degrades, an internal power fail signal is generated which forces
DS1705/DS1706
3.3V and 5.0V MicroMonitor
19-5212; Rev 4/10
www.maxim-ic.com
8-Pin
-SOP (118-mil)
See Mech. Drawings Section on website
RST(*RST)
WDS
PBRST
VCC
ST
NMI
IN
GND
1
2
3
4
8
7
6
5
8-Pin DIP (300 -mil)
PBRST
VCC
GND
IN
WDS
RST
ST
NMI
1
2
3
4
8
7
6
5
8-Pin SOIC (150-mil)
1
2
3
4
8
7
6
5
PBRST
VCC
GND
IN
WDS
RST(*RST)
ST
NMI


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