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Dallas Semiconductor

DS1411 Datasheet Preview

DS1411 Datasheet

Serial Port iButton Holder

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Serial Port iButton ™ Holder
Small size, true-ground interface to an
RS232 COM Port for reading and writing
iButton devices
Works with bipolar logic signals of ± 5V to ±
12V (RS232C) as well as unipolar signals of
5V to 12V
www.DataShSeueptp4oUr.tcsormeading and writing at regular and
Overdrive speeds
Provides strong pullup to 5V for
Temperature iButton, Crypto iButton and
EEPROM iButton
Communicates at data rates of 9.6k (default),
19.2k, 57.6k and 115.2k bits/s
Powered entirely from an RS232 interface
Standard DB female connector for mating to
the COM Port of a computer with DS9098
iButton Retainer for a single iButton or
MicroLAN Cable (DS1402x)
DS1411 DB-9 Connector
The DS1411 is a sophisticated RS232 to 1-Wire TM adapter and iButton holder which performs RS232
level conversion and actively generates the 1-Wire communication signals. Together with an adequate
TMEX software driver it enables an IBM-compatible PC or laptop computer to directly read all and write
any non-EPROM iButton devices. The DS1411 has a DS9098 retainer for a single F5 MicroCan and can
replace the DS9097U-009 in applications that use only a single iButton. Multiple iButtons can be
connected using standard MicroLAN Cables and button holders (see DS1401 and DS1402x data sheets).
1-Wire communication is supported by the adapter for regular 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
RS232 data rates of 19200, 57600 and 115200 bits per second. 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 RS232 port generates eight time slots on the 1-Wire bus.
The DS1411 is based on the DS2480 Serial 1-Wire Line Driver chip and therefore is not a plug-in
replacement for the DS1412 Serial Port Adapter. The RXD/ TXD Polarity Select input of the DS2480 is
tied to VDD (non-inverting).
1 of 1

Part Number DS1411
Description Serial Port iButton Holder
Maker Dallas Semiconductor
Total Page 1 Pages
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