DS1831C View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
DS1831C Datasheet PDF : 15 Pages
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DS1831C/D/E
3.3V/2.5V Multisupply MicroMonitor
www.maxim-ic.com
FEATURES
§ 2.5V power-on reset
§ 3.3V power-on reset
§ Two referenced comparators with separate
outputs for monitoring additional supplies
§ Internal power is drawn from higher of either
the IN2.5V input or the IN3.3V input
§ Excellent for systems designed to operate
with multiple power supplies
§ Asserts resets during power transients
§ Pushbutton reset input for system override
§ Maintains reset for user configurable times
of 10ms, 100ms, or 1s
§ Watchdog timer for software monitoring
(DS1831D)
§ Precision temperature-compensated voltage
reference and voltage sensor
§ 16-pin DIP and 16-pin 150mil SO available
§ Operating Temperature of -40°C to +85°C
DS1831D
PIN ASSIGNMENT
DS1831C
IN2.5V
1
RST2.5V 2
16
IN3.3V
15 RST3.3V
TOL2.5V 3
TD2.5V
4
PBRST2.5V 5
IN1 6
14 TOL3.3V
13
TD3.3V
12 PBRST3.3V
11 NMI1
IN2 7
10 NMI2
GND 8
9 MPBRST
16-Pin (300mil) DIP
&
16-Pin (150mil) SO
DS1831E
IN2.5V 1
RST2.5V 2
TOL2.5V 3
TD2.5V 4
PBRST2.5V 5
IN1 6
ST 7
16
IN3.3V
15 RST3.3V
14
TOL3.3V
13
TD3.3V
12 PBRST3.3V
11 NMI1
10 WDS
IN2.5V
1
RST2.5V 2
TOL2.5V 3
TD2.5V
4
PBRST2.5V 5
IN1 6
IN2 7
16 IN3.3V
15 RST3.3V
14 TOL3.3V
13 TD3.3V
12 PBST
11 NMI1
10 NMI2
GND 8
9 TDWD
16-Pin (300mil) DIP
&
16-Pin (150mil) SO
GND 8
9 MPBRST
16-Pin (300mil) DIP
&
16-Pin (150mil) SO
DESCRIPTION
The DS1831C multisupply monitor and reset monitors up to four system voltages: 2.5V supply, 3.3V (or
3V) supply, and two additional user configurable voltage monitors. DS1831 power for internal operation
comes from the higher voltage level of the 3.3V input or the 2.5V input. One of these inputs must be
greater than 1V for device operation. Pushbutton (manual reset) functionality is provided for the 2.5V
1 of 15
060303
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