DS1817：Active High 3.3V EconoReset
The DS1812 (5V) and DS1817 (3.3V) EconoResets are simple three-pin voltage monitors and power-on resets that hold reset for 150ms for stabilization after power returns to tolerance. The voltage monitor uses precision temperature reference and comparator circuits that detect out-of-tolerance conditions and generate an active high reset. The output has a push-structure capable of maintaining a valid output to 0 volts with a 100kΩ pull-down resistor. The low-power circuit has a quiescent current consumption of only 40 micro-amps. The DS1817 replaces discrete components and saves space, particularly in the new SOT-23 package. EconoResets can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.
Key Features
| DS1817: Block Diagram |
DataSheet
| title | Download file |
|---|---|
| DS1817 Data Sheet | DS1817.pdf |
Parametrics
| Part Number | Reset Thresh. (V) | Reset Out | tRESET | Watchdog Feature | Reset Thresh. Accur. (%) | ICC (µA) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|
| min | @ +25°C | max | See Notes | |||||
| DS1817 | 2.5 to 3.3 | Active High Push-Pull | 85ms to 300ms | No Watchdog | 2.5 | 35 | SOT/3 TO92/3 | $0.40 @1k |
Quality and Environmental Data
Ordering Information
| Part Number | Notes | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|---|
| DS1817-10 | 3.3V-10% Monitor | No Longer Available | DS1817-10+ | TO92,;3 pin;19.5 mm² | -40°C to +85°C | No |
| DS1817-10+ | Active | TO92,;3 pin;19.5 mm² | -40°C to +85°C | Lead Free | ||
| DS1817-10+T&R | 3.3V-10% | Active | TO92,;3 pin;27.6 mm² | -40°C to +85°C | Lead Free | |
| DS1817-10/T&R | 3.3V-10% | No Longer Available | DS1817-10+T&R | TO92,;3 pin;27.6 mm² | -40°C to +85°C | No |
| DS1817-20 | 3.3V-20% Monitor | No Longer Available | DS1817-20+ | TO92,;3 pin;19.5 mm² | -40°C to +85°C | No |
| DS1817-20+ | Active | TO92,;3 pin;19.5 mm² | -40°C to +85°C | Lead Free | ||
| DS1817-20+T&R | 3.3V-20% | Active | TO92,;3 pin;27.6 mm² | -40°C to +85°C | Lead Free | |
| DS1817-20/T&R | 3.3V-20% | No Longer Available | DS1817-20+T&R | TO92,;3 pin;27.6 mm² | -40°C to +85°C | No |
| DS1817-5 | 3.3V-5% Monitor | No Longer Available | DS1817-5+ | TO92,;3 pin;19.5 mm² | -40°C to +85°C | No |
| DS1817-5+ | Active | TO92,;3 pin;19.5 mm² | -40°C to +85°C | Lead Free | ||
| Part Number | Notes | Status | Recommended Replacement | Package | Temp | RoHS |
| DS1817-5+T&R | 3.3V-5% | Active | TO92,;3 pin;27.6 mm² | -40°C to +85°C | Lead Free | |
| DS1817-5/T&R | 3.3V-5% | No Longer Available | DS1817-5+T&R | TO92,;3 pin;27.6 mm² | -40°C to +85°C | No |
| DS1817R-10+T&R | 3.3V-10% | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | |
| DS1817R-10-U | No Longer Available | DS1817R-10-U+ | SOT,;3 pin;8 mm² | -40°C to +85°C | No | |
| DS1817R-10-U+ | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | ||
| DS1817R-10/T&R | 3.3V-10% | No Longer Available | DS1817R-10+T&R | SOT,;3 pin;8 mm² | -40°C to +85°C | No |
| DS1817R-20+T&R | 3.3V-20% | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | |
| DS1817R-20-U | No Longer Available | DS1817R-20-U+ | SOT,;3 pin;8 mm² | -40°C to +85°C | No | |
| DS1817R-20-U+ | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | ||
| DS1817R-20/T&R | 3.3V-20% | No Longer Available | DS1817R-20+T&R | SOT,;3 pin;8 mm² | -40°C to +85°C | No |
| Part Number | Notes | Status | Recommended Replacement | Package | Temp | RoHS |
| DS1817R-5+T&R | 3.3V-5% | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | |
| DS1817R-5-U | No Longer Available | DS1817R-5-U+ | SOT,;3 pin;8 mm² | -40°C to +85°C | No | |
| DS1817R-5-U+ | Active | SOT,;3 pin;8 mm² | -40°C to +85°C | Lead Free | ||
| DS1817R-5/T&R | 3.3V-5% | No Longer Available | DS1817R-5+T&R | SOT,;3 pin;8 mm² | -40°C to +85°C | No |
- DS1817.pdf DS1817
- DS1817.pdf DS1817
- DS1817.pdf DS1817
- DS1817.pdf DS1817
- 原理框图 DS1817
