DS1831, DS1831A, DS1831B：Multisupply MicroMonitor™
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
| DS1831, DS1831A, DS1831B: Block Diagram |
DataSheet
| title | Download file |
|---|---|
| DS1831-DS1831B Data Sheet | DS1831-DS1831B.pdf |
Parametrics
| Part Number | Interface | Reset Thresh. (V) | Reset Out | tRESET | Watchdog Feature | Watchdog Timeout | Supervisor Features | Reset Thresh. Accur. (%) | ICC (µA) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|
| min | @ +25°C | max | See Notes | ||||||||
| DS1831A | Factory Fixed R/C Adjustable | 2.5 to 3.3 3.3 to 5.5 | Active Low Open Drain | 15ms to 85ms 85ms to 300ms 300ms to 1s | Input/Output (WDI/WDO) Pin Selectable | 1s to 2s <1s | Manual Reset | 2.5 | 100 | PDIP(N)/16 SOIC(N)/16 | $2.99 @1k |
| DS1831B | No Watchdog | - | PDIP(N)/16 SOIC(N)/16 | ||||||||
Quality and Environmental Data
Ordering Information
| Part Number | Notes | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|---|
| DS1831 | No Longer Available | DS1831+ | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | No | |
| DS1831+ | Active | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | Lead Free | ||
| DS1831A | w/WD | No Longer Available | DS1831A+ | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | No |
| DS1831A+ | Active | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | Lead Free | ||
| DS1831AS | w/WD | No Longer Available | DS1831AS+ | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No |
| DS1831AS+ | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831AS+T&R | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831AS/T&R | w/Reset Status | No Longer Available | DS1831AS+T&R | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No |
| DS1831B | w/Reset Status | No Longer Available | DS1831B+ | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | No |
| DS1831B+ | Active | PDIP(N),;16 pin;158.4 mm² | -40°C to +85°C | Lead Free | ||
| Part Number | Notes | Status | Recommended Replacement | Package | Temp | RoHS |
| DS1831BS | w/Reset Status | No Longer Available | DS1831BS+ | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No |
| DS1831BS+ | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831BS+T&R | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831BS/T&R | w/Reset Status | No Longer Available | DS1831BS+T&R | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No |
| DS1831S | No Longer Available | DS1831S+ | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No | |
| DS1831S+ | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831S+T&R | Active | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | Lead Free | ||
| DS1831S/T&R | No Longer Available | DS1831S+T&R | SOIC(N),;16 pin;61.9 mm² | -40°C to +85°C | No |
- DS1831-DS1831B.pdf DS1831B
