Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsDev KitsAdapter

AVAILABLE

Functional Diagrams

Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and

ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

FEATURES

 True-Ground Interface to an RS-232 COM Port

for Reading and Writing 1-Wire

Devices

 Works with Bipolar as well as Unipolar Logic

Signals

 Compatible to COM port of (±)5V to (±)12V

(DB9 Version Only) or (±)6V to (±)12V (DB25

Version)

 Supports Reading and Writing at Standard and

Overdrive Speeds

 Provides Strong Pullup to 5V for Temperature

and EEPROM 1-Wire Devices

 Programs 1-Wire EPROM Devices (DB-25

Version with External 12V Power Supply Only)

 Communicates at Data Rates of 9.6kbps

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

 Standard DB9 or DB25 Female Connector and

6-Lead RJ11 Connector for Easy Attachment

of Standard 1-Wire Cables and Probes

 Includes DS2502 Identification Chip

(DS9097U-009 Only)

PIN ASSIGNMENT

DB9: TXD (3), RXD (2), DTR (4), RTS (7), PC-Ground

(5); all other pins not connected

DB25: TXD (2), RXD (3), DTR (20), RTS (4), PC-

Ground (7); all other pins not connected

Note 1: The external supply for the DS9097U-E25

must provide well-regulated 12V at 10mA minimum,

center = GND, outer ring = V+ (Newark Electronics

Stock No. 84F2081, Allied Electronics Stock No. 928-

9895, Stancor Model STA-300R, or equivalent).

Note 2: The color of the DS9097U plastic case can

vary.

ORDERING INFORMATION

PART

TYPE

DS9097U-009#

DB9, with DS2502 ID chip

DS9097U-S09#

DB9, no ID chip

DS9097U-E25#

DB25, with EPROM write

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

is exempt under the RoHS requirements.

PACKAGE OUTLINE

DB9 VERSION

SIDE VIEW

REAR VIEW

RJ11 PIN 1

DB25 VERSION

RJ11 PIN 1

SIDE VIEW

REAR VIEW

+ CONTACT

- CONTACT

2.1mm

POWER JACK

SCHEMATIC (FOR ILLUSTRATION)

DB9 VERSION

RTS

DTR

RXD

TXD

GND

RS-232

COM PORT

REG

DS2480B

RJ11

1-W

GND

CHIP

DS9097U-009

ONLY

DB25 VERSION

RTS

DTR

RXD

TXD

GND

RS-232

COM PORT

REG

DS2480B

RJ-11

1-W

GND

POWER JACK

DS9097U

Universal 1-

Wire COM Port Adapter

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

19-4874; Rev 6/11

Summary of content (3 pages)

PAGE 1
LE AVAILAB DS9097U Universal 1-Wire COM Port Adapter FEATURES          PACKAGE OUTLINE True-Ground Interface to an RS-232 COM Port ® for Reading and Writing 1-Wire Devices Works with Bipolar as well as Unipolar Logic Signals Compatible to COM port of (±)5V to (±)12V (DB9 Version Only) or (±)6V to (±)12V (DB25 Version) Supports Reading and Writing at Standard and Overdrive Speeds Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices Programs 1-Wire EPROM Devices (DB-25 Version w
PAGE 2
DS9097U DESCRIPTION The DS9097U is a sophisticated RS-232 to 1-Wire adapter, which performs RS-232 level conversion and actively generates the 1-Wire communication signals. Together with an adequate software driver, it enables a Windows®based PC to directly communicate with any 1-Wire device connected to the adapter’s RJ11 port. The DB9 version reads and writes any non-EPROM 1-Wire device. To write to EPROM devices, the DB25 version with external power supply is required.
PAGE 3
DS9097U REVISION HISTORY REVISION DATE 9/00 2/04 8/09 6/11 DESCRIPTION Initial release Updated for change in plastic body style; added note that the color of the plastic body may vary Added the # sign to all the part numbers in the Ordering Information table; added the Revision History table Deleted references to Crypto devices, TMEX, DS9097, and DS9097E; added reference to the Connectivity Matrix table in the DS1402x 1-Wire network cables data sheet; updated the URL for software drivers download PAGES C