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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 128kB) Download   E-Mail

Description

The DS1815 EconoReset uses a precision temperature reference and comparator circuit to monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for approximately 150ms to allow the power supply and processor to stabilize.

Key Features

Automatically restarts a microprocessor after power failure Maintains reset for 150ms after VCC returns to an in-tolerance condition Reduces need for discrete components Precision temperature-compensated voltage reference and voltage sensor Accurate 5%, 10% or 20% power monitoring Low-cost TO-92 or space saving surface-mount SOT-23 packages available Push-pull output for low current operation Operating temperature -40°C to +85°C

Diagram

Block Diagram

Application Notes

Application Note 3316: Dallas Semiconductor Microprocessor Supervisor Selection Guide - DS1815

Reliability Reports

Reliability Report: DS1815.pdf

Software/Models

none

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

DS1815	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1815R-10+T&R	3.3V-10%			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815R-20+T&R	3.3V-20%			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815R-5+T&R	3.3V-5%			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815R-5/T&R	3.3V-5%			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815R-10/T&R	3.3V-10% Tolerance			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815R-20/T&R	3.3V-20% Tolerance			Active	SOT;3 pin;8 mm² Outline Drawing: 21-0051 (PDF) Land Pattern: 90-0179 (PDF) Use pkgcode/variation: U3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-20+				Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815-10+				Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815-5+				Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815-5	3.3V-5% Monitor			Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-10	3.3V-10% Monitor			Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-20	3.3V-20% Monitor			Active	TO92;3 pin;20 mm² Outline Drawing: 21-0248 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-5/T&R	3.3V-5%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-10/T&R	3.3V-10%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-20/T&R	3.3V-20%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1815-10+T&R	3.3V-10%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815-20+T&R	3.3V-20%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1815-5+T&R	3.3V-5%			Active	TO92;3 pin;28 mm² Outline Drawing: 21-0250 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: Q3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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