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FEATURES

 Small Size, True-Ground Interface to an

RS-232 COM Port for Reading and Writing

iButton

 CE and FCC Compliant

 Works with Bipolar Logic Signals of ±5V to

± 12V (RS-232C) as well as Unipolar Signals

of 5V to 12V

 Supports Reading and Writing at Standard

and Overdrive Speeds

 Provides Strong Pullup to 5V for

Temperature iButton and EEPROM iButton

 Communicates at Data Rates of 9.6kbps

(default), 19.2kbps, 57.6kbps, and 115.2kbps

 Powered Entirely from an RS-232 Interface

 Standard DB9 Female Connector for Mating

to the COM Port of a Computer with

DS9098P iButton Retainer for a Single

iButton

 Includes DS2502 Identification Chip

(DS1411-009 Version Only)

SCHEMATIC (FOR ILLUSTRATION)

6

4

RTS

DTR

RXD

TXD

GND

RS-232

COM PORT

5V

REG

DS2480B

1

7

8

5

2

ID

CHIP

DS1411-009

ONLY

ORDERING INFORMATION

PART

TYPE

DS1411-009#

DB9 connector, with ID chip

DS1411-S09#

DB9 connector, no ID chip

#Denotes a RoHS-compliant device that may include lead(Pb) that is

exempt under the RoHS requirements.

DESCRIPTION

The DS1411 is a sophisticated RS-232-to-1-Wire

conversion and actively generates the 1-Wire communication signals. Together with an adequate software

driver, it enables a Windows

The DS1411 has a DS9098P retainer for a single F5 MicroCan. For a list of suitable 1-Wire network

cables, e.g., to connect multiple iButtons, refer to the Connectivity Matrix table in the DS1402x 1-Wire

network cables data sheet. 1-Wire communication is supported by the adapter for standard speed as well

as overdrive speed. The serial port must support a data transmission rate of 9600 bits/s. Under software

control, the adapter can be set up for RS-232 data rates of 19200bps, 57600bps, and 115200bps. The two

higher rates are recommended for communication at overdrive speed with overdrive capable devices.

Since the DS1411 operates in a byte mode, every data byte received from the RS-232 port generates eight

time slots on the 1-Wire bus. The DS1411 is based on the DS2480B serial 1-Wire line driver chip. The

drivers can be downloaded from www.maxim-ic.com/1-Wiredrivers.

iButton and 1-Wire are registered trademarks of Maxim Integrated Products, Inc.

Windows is a registered trademark of Microsoft Corp.

19-4862; Rev 6/11

DS1411

Serial Port iButton Holder