DS1705
DS1705
PRODUCTION3.3V and 5.0V MicroMonitor
- Part Models
- 2
- 1ku List Price
- Starting From $7.62
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Overview
- Halts and restarts an out-of-control microprocessor
- Holds microprocessor in check during power transients
- Automatically restarts microprocessor after power failure
- Monitors pushbutton for external override
- Accurate 5%, 10% or 20% resets for 3.3V systems and 5% or 10% resets for 5.0V systems
- Eliminates the need for discrete components
- 3.3V 20% tolerance for use with 3.0V systems
- Pin-compatible with the MAXIM MAX705/MAX706 in 8-pin DIP, 8-pin SO, and µSOP
- 8-pin DIP, 8-pin SO and 8-pin µSOP packages
- Industrial temperature range -40°C to +85°C
The DS1705/DS1706 3.3- or 5.0-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. A precision temperature compensated reference and comparator circuit monitor the status of VCC at the device and at an upstream point for maximum protection. When the sense input detects an out-of-tolerance condition a non-maskable interrupt is generated. As the voltage at the device degrades, an internal power fail signal is generated which forces the reset to an active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a minimum of 130ms to allow the power supply and processor to stabilize.
The second function the DS1705/DS1706 performs is pushbutton reset control. The DS1705/DS1706 debounces the pushbutton input and guarantees an active reset pulse width of 130ms minimum.
The third function is a watchdog timer. The DS1705/DS1706 has an internal timer that forces the WDO signal to the active state if the strobe input is not driven low prior to time-out.
Documentation
Data Sheet 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1705ESA+ | Small-Outline IC Narrow (0.15in) | ||
| DS1705ESA+T&R | Small-Outline IC Narrow (0.15in) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 30, 2020 - 1702R2 ASSEMBLY |
||
| DS1705ESA+ | PRODUCTION | |
| DS1705ESA+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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