Maxim > Products > 1-Wire® Devices > DS2405

DS2405

Addressable Switch

Overview

Technical Documents

Ordering Info

Status

Part Number	Status	Replacement	Explanation
DS2405	This product is No Longer Available. See Ordering Information for recommended replacements.	DS2413	The DS2405 is no longer available. The 1-Wire DS2413 with 2-CH GPIO functionality is recommended as a replacement.

Description

The DS2405 Addressable Switch is an open drain N-channel transistor that can be turned on or off by matching the 64-bit factory-lasered registration number within each part. The 64-bit number consists of an 8-bit family code, a unique 48-bit serial number, and an 8-bit cyclic redundancy check. Communication with the DS2405 follows the standard Dallas Semiconductor 1-Wire protocol and can be accomplished with a single port pin of a microcontroller. Multiple DS2405 devices can reside on a common 1-Wire bus creating a MicroLAN. The network controller circuitry is embedded within the chip including a search algorithm to determine the identity of each DS2405 on the network. The open drain output (PIO pin) for each DS2405 on the MicroLan can be independently toggled on or off whether there is one or many devices sharing the same 1-Wire bus. The logic level of the PIO pin for each device on the MicroLan can also be individually sensed and reported to the bus master.

Data Sheet

Download	Rev 2	(PDF, 436kB)
E-Mail

An evaluation kit is available: DS9090K

Key Features

Open-drain PIO pin is controlled by matching 64-bit, laser-engraved registration number associated with each device
Logic level of open drain output can be determined over 1-Wire® bus for closed-loop control
PIO pin sink capability is greater than 4mA at 0.4V
Multiple DS2405s can be identified on a common 1-Wire bus and be turned on or off independent of other devices on the bus
Unique, factory-lasered and tested 64-bit registration number (8-bit family code +48-bit serial number +8-bit CRC tester) assures absolute identity because no two parts are alike
Built-in multidrop controller ensures compatibility with other MicroLAN products
Reduces control, address, data, and power to a single data pin
Directly connects to a single port pin of a microprocessor and communicates at up to 16.3kbits/s
8-bit family code specifies DS2405 communications requirements to reader
8-bit cyclic redundancy check ensures error-free selection
Zero standby power required
Low cost TO-92, SOT-223, or 6-pin TSOC surface mount package
1-Wire communication operates over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C

Application Notes

Application Note 27		Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products
Application Note 155		1-Wire® Software Resource Guide Device Description
Reference Design 244		Advanced 1-Wire Network Driver

Product Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report:

DS2405.pdf

Software/Models

none

Ordering Information

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Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2405		N/A	No Longer Available	DS2413 The DS2405 is no longer available. The 1-Wire DS2413 with 2-CH GPIO functionality is recommended as a replacement.	TO92;3 pin;19.5 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
DS2405+		N/A	No Longer Available	DS2413	TO92;3 pin;19.5 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
DS2405+T&R		N/A	No Longer Available	DS2413	TO92;3 pin;27.6 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
DS2405-037-01		N/A	No Longer Available	DS2413	TO92; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2405-037-01+		N/A	No Longer Available	DS2413	TO92; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2405/T&R		N/A	No Longer Available	DS2413	TO92;3 pin;27.6 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
DS2405AR-100-550/T		N/A	No Longer Available	DS2413	SOT23; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS2405P		N/A	No Longer Available	DS2413	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405P+		N/A	No Longer Available	DS2413	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405P+T&R		N/A	No Longer Available	DS2413	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2405P/T&R		N/A	No Longer Available	DS2413	TSOC;6 pin;17.8 mm² Outline Drawing:21-0382 (PDF) Land Pattern: 90-0321 (PDF) Use pkgcode/variation: D6-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405Z		N/A	No Longer Available	DS2413	SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405Z+		N/A	No Longer Available	DS2413	SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405Z+T&R		N/A	No Longer Available	DS2413	SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405Z/T&R		N/A	No Longer Available	DS2413	SOT-223;3 pin;48.9 mm² Outline Drawing:21-0264 (PDF) Land Pattern: Not Available Use pkgcode/variation: K3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

Evaluation Kits

DS9090K

1-Wire Device Evaluation Kit Rev B4

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 2; 2007-07-12
This page last modified: 2008-05-09