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Data Sheet

FULL DATA SHEET (PDF, 436kB) Download   E-Mail

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.

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 - DS2405 Application Note 126: 1-Wire Communication Through Software - DS2405 Application Note 155: 1-Wire® Software Resource Guide Device Description - DS2405 Application Note 158: 1-Wire Tagging with XML - DS2405 Application Note 178: Printed Circuit Board Identification Using 1-Wire Products - DS2405 Application Note 187: 1-Wire Search Algorithm - DS2405 Application Note 192: Using the DS2480B Serial 1-Wire Line Driver - DS2405 Application Note 244: Advanced 1-Wire Network Driver - DS2405 Application Note 1097: White Paper 2: Using the 1-Wire® Public Domain Kit - DS2405 Application Note 1100: White Paper 5: Using 1-Wire APIs for Data Sheet Commands - DS2405 Application Note 3989: Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact - DS2405

Evaluation Kits

DS9090K

Design Guides

1-Wire® PRODUCTS (PDF)

Reliability Reports

Reliability Report: DS2405.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: 1-11 of 11
DS2405	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2405Z+T&R			ST223;3 pin; Dwg: 56-G0005-001 Use pkgcode/variation: K3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405Z+			ST223;3 pin; Dwg: 56-G0005-001 Use pkgcode/variation: K3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405Z			ST223;3 pin; Dwg: 56-G0005-001 Use pkgcode/variation: K3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405Z/T&R			ST223;3 pin; Dwg: 56-G0005-001 Use pkgcode/variation: K3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405/T&R			TO92;3 pin; Dwg: 56-G0006-003 Use pkgcode/variation: Q3-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405+T&R			TO92;3 pin; Dwg: 56-G0006-003 Use pkgcode/variation: Q3+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405+			TO92;3 pin; Dwg: 56-G0006-001 Use pkgcode/variation: Q3+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405			TO92;3 pin; Dwg: 56-G0006-001 Use pkgcode/variation: Q3-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS2405P/T&R			TSOC;6 pin; Dwg: 56-G2016-001 Use pkgcode/variation: D6-1*	-40°C to +85°C	See data sheet Materials Analysis
DS2405P+			TSOC;6 pin; Dwg: 56-G2016-001 Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2405P+T&R			TSOC;6 pin; Dwg: 56-G2016-001 Use pkgcode/variation: D6+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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