DS1831, DS1831A, DS1831B Multisupply MicroMonitor™

Description

The DS1831 multisupply monitor and reset monitors up to four system voltages: 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 5V input. One of these inputs must be greater than 1V for device operation. Pushbutton (manual reset) functionality is provided for the 5V reset, the 3.3V reset or for all reset outputs by the master pushbutton. The DS1831A replaces one reference comparator and the master pushbutton with watchdog and the DS1831B replaces the 3.3V with a last reset status output.

TOL and TD inputs allow user configuration of the DS1831 for multiple applications. The TOL inputs configure the tolerance for the specified output and the TD inputs configure the reset time delays.

Key Features

5V power-on reset
3.3 (or 3V) power-on reset
Two referenced comparators with separate outputs for monitoring additional supplies
Internal power is drawn from higher of either the IN_5V input or the IN_3.3V 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 (DS1831A)
Precision temperature-compensated voltage reference and voltage sensor
16-pin DIP and 16-pin 150-mil SO available
Operating Temperature of -40°C to +85°C

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Min. Reset Timeout Range

Watchdog Feature

Nom. Watchdog Timeout Range

Supervisor Features

Reset Thresh. Acc. (% @+25°C)

Max. I_CC (µA)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

DS1831A

2.5 to 3.3
3.3 to 5.5

Open Drain

15ms to 85ms
300ms to 1s
85ms to 300ms

Input/Output (WDI/WDO)
Pin Selectable

1s to 2s
<1s

Manual Reset

2.5

100

Yes

PDIP/16
SOIC/16

-40 to +85

$2.85 @ 1k

DS1831B

No Watchdog

$2.85 @ 1k

See All Supervisors (2 Monitored Voltages) (79)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Reliability Reports


		Reliability Report: DS1831.pdf

		Request Reliability Report for:

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-18 of 18

DS1831

Notes

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

DS1831+

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16+10*

-40°C to +85°C

See data sheet

DS1831

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16-10*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831S+T&R

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831S

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831S/T&R

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831S+

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831A

Notes

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

DS1831A+

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16+10*

-40°C to +85°C

See data sheet

DS1831A

w/WD

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16-10*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831AS+

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831AS+T&R

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831AS/T&R

w/Reset Status

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831AS

w/WD

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831B

Notes

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

DS1831B+

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16+10*

-40°C to +85°C

See data sheet

DS1831B

w/Reset Status

PDIP;16 pin;158 mm²
Dwg: 56-G5005-002A (PDF)
Use pkgcode/variation: P16-10*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831BS+

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831BS+T&R

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

DS1831BS/T&R

w/Reset Status

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

DS1831BS

w/Reset Status

SOIC;16 pin;62 mm²
Dwg: 56-G2008-001C (PDF)
Use pkgcode/variation: S16-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis