3.3V/2.5V Multisupply MicroMonitor
DS1831C/D/E
3.3V/2.5V Multisupply MicroMonitor
www.maxim-ic.com
FEATURES
§ 2.5V power-on reset § 3.3V power-on reset § ...
Description
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 RST2.5V TOL2.5V TD2.5V PBRST2.5V
IN1
1 2 3 4 5 6
16 IN3.3V 15 RST3.3V 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 RST2.5V TOL2.5V TD2.5V PBRST2.5V
IN1
1 2 3 4 5 6
16 IN3.3V 15 RST3.3V 14 TOL3.3V 13 TD3.3V 12 PBRST3.3V 11 NMI1
IN2.5V RST2.5V TOL2.5V TD2.5V PBRST2.5V
IN1
1 2 3 4 5 6
16 IN3.3V 15 RST3.3V 14 TOL3.3V 13 TD3.3V 12 PBST 11 NMI1
ST 7
10 WDS
IN2 7
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 c...
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