ds9097u-e25 Maxim Integrated Products, Inc., ds9097u-e25 Datasheet
ds9097u-e25
Manufacturer Part Number
ds9097u-e25
Description
Universal 1-wire Com Port Adapter
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS9097U-E25.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ds9097u-e25#
Manufacturer:
Maxim Integrated Products
Quantity:
135
1-Wire is a registered trademark of Dallas Semiconductor.
FEATURES
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PIN ASSIGNMENT
DB-25: TXD (2), RXD (3), DTR (20), RTS (4), PC-
Ground (7); all other pins not connected
DB-9: TXD (3), RXD (2), DTR (4), RTS (7),
PC-Ground (5); all other pins not connected
NOTES:
* The external supply for the DS9097U-E25 must
provide well-regulated 12V @ 10mA minimum,
center = GND, outer ring = V+ (Newark Electronics
Stock No. 84F2081, Allied Electronics Stock No.
928-9895, Stancor Model STA-300R, or equivalent)
* The color of the DS9097U plastic case may vary.
ORDERING INFORMATION
DS9097U-009 DB-9, with DS2502 ID Chip
DS9097U-S09 DB-9, no ID chip
DS9097U-E25 DB-25, with EPROM Write
www.maxim-ic.com
True-Ground Interface to an RS232 COM Port for
Reading and Writing 1-Wire
Works with Bipolar as well as Unipolar Logic
Signals
Compatible to COM port of (±)5V to (±)12V (DB-9
Version Only) or (±)6V to (±)12V (DB-25 Version)
Supports Reading and Writing at Regular and
Overdrive Speeds
Provides Strong Pullup to 5V for Temperature-,
Crypto-, and EEPROM 1-Wire devices
Programs 1-Wire EPROM Devices (DB-25
Version with External 12V Power Supply Only)
Communicates at Data Rates of 9.6 (default),
19.2, 57.6, and 115.2kbps
Standard DB-9 or DB-25 Female Connector and
6-lead RJ-11 Connector for Easy Attachment of
Standard 1-Wire Cables and Probes
Includes DS2502 Identification Chip (DS9097U-
009 only)
®
Devices
1 of 2
PACKAGE OUTLINE
DB-09 version
DB-25 version
SCHEMATIC
DB-9 version
DB-25 version
RS232
COM Port
RS232
COM Port
RTS
DTR
RXD
TXD
GND
RTS
DTR
RXD
TXD
GND
Universal 1-Wire COM Port Adapter
SIDE VIEW
SIDE VIEW
Reg.
Reg.
(for illustration)
5V
5V
8
7
8
7
4
4
2480B
2480B
DS9097U-009
DS
DS
6
6
REAR VIEW
1
1
only
REAR VIEW
5
2
5
2
9V
Power Jack
Chip
DS9097U
ID
RJ-11 pin 1
2.1mm
power jack
- contact
+ contact
RJ-11 pin 1
REV: 022404
RJ-11
6
5
4
3
2
1
6
5
4
3
2
1
RJ-11
1-W
GND
1-W
GND
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ds9097u-e25 Summary of contents
Page 1
... Ground (7); all other pins not connected DB-9: TXD (3), RXD (2), DTR (4), RTS (7), PC-Ground (5); all other pins not connected NOTES: * The external supply for the DS9097U-E25 must provide well-regulated 12V @ 10mA minimum, center = GND, outer ring = V+ (Newark Electronics Stock No. 84F2081, Allied Electronics Stock No. ...
Page 2
... Note that there are some COM ports that use signal levels of less than (±) 5V. The DB-9 versions of this adapter will not work with such ports. The DS9097U-E25 adapter, however, will function in most cases if external power is supplied. Without EPROM programming, the external power may be anywhere in the range 9V. For EPROM programming the voltage must be at 12V in any case. Before using an externally powered DS9097U-E25 with a COM port of less than (± ...