Details, datasheet, quote on part number: DS9097U-S09
CategoryASSP (Application-Specific Standard Products) => 1-Wire
DescriptionUniversal 1-Wire COM Port Adapter
The DS9097U is a sophisticated RS232 to 1-Wire® adapter, 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 to directly communicate with any 1-Wire device connected to the adapter\'s RJ-11 port. The DB-9 version reads and writes any non-EPROM 1-Wire device. To write to EPROM devices, the DB-25 version with external power supply is required.
CompanyMaxim Integrated Products
DatasheetDownload DS9097U-S09 datasheet
Find where to buy


Features, Applications


True-Ground Interface an RS232 COM Port for Reading and Writing 1-Wire® Devices Works with Bipolar as well as Unipolar Logic Signals Compatible to COM port (±)12V (DB-9 Version Only) (±)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 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 (DS9097U009 only)

2.1mm power jack - contact + contact SIDE VIEW REAR VIEW

DB-25: TXD (2), RXD (3), DTR (20), RTS (4), PCGround (7); all other pins not connected DB-9: TXD (3), RXD (2), DTR (4), RTS (7), PC-Ground (5); all other pins not connected

* The external supply for the DS9097U-E25 must provide well-regulated @ 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.

DS9097U-E25# DB-9, with DS2502 ID Chip no ID chip DB-25, with EPROM Write

# Denotes an RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements.

is a registered trademark of Maxim Integrated Products, Inc.

The is a sophisticated to 1-Wire adapter, which performs RS232 level conversion and actively generates the 1-Wire communication signals. Together with an adequate TMEX software driver, it enables an IBMcompatible PC to directly communicate with any 1-Wire device connected to the adapter's RJ-11 port. The DB-9 version reads and writes any non-EPROM 1-Wire device. To write to EPROM devices, the DB-25 version with external power supply is required. All DS9097U adapters are based on the DS2480B Serial 1-Wire Line Driver chip and therefore are not a plug-in replacement for the or DS9097E. The RXD/TXD Polarity Select input of the DS2480B is tied to VDD (noninverting). Free software drivers can be downloaded from The DS9097U communicates with 1-Wire devices at regular speed as well as Overdrive speed. The serial port must support a data transmission rate of 9600bps. Under software control, the adapter can be set up for RS232 data rates 19200, 57600, and 115200bps. The two higher rates are recommended for communication at Overdrive speed with Overdrive capable devices. Since the DS9097U operates in a byte mode, every data byte received from the RS232 port generates eight time slots on the 1-Wire line. At 19200bps data rate the DS9097UE25 is already faster than the DS9097 (E) at 115200bps. 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 to 9V. For EPROM programming the voltage must 12V in any case. Before using an externally powered DS9097U-E25 with a COM port of less than 5V check whether the COM port will not be damaged 5V on its RXD input.

REVISION DATE 8/09 DESCRIPTION Added the # sign to all the part numbers in the Ordering Information table. PAGES CHANGED 1


Related products with the same datasheet
Some Part number from the same manufacture Maxim Integrated Products
DS9106L IButton HaloThe DS9106 iButton® halos are 0.25mm, thin vinyl highlighters that slide over an iButton that is to be labeled with text, picture, or numeric information. The halo is retained by a friction
DS9093RA IButton Plastic Card MountsThe DS9093RA Lock Ring is a stainless-steel fastener that provides an inexpensive method for firmly attaching an iButton® to any item with a pre-punched hole. The iButton is inserted
MAX5972A IEEE 802.3af/at-Compliant, Powered Device Interface Controllers With Integrated Power MOSFETThe MAX5972A/MAX5972B provide a complete interface for a powered device (PD) to comply with the IEEE® 802.3af/at
MAXQ7667 16-Bit, RISC, Microcontroller-Based, Ultrasonic Distance-Measuring SystemThe MAXQ7667 smart system-on-a-chip (SoC) provides a time-of-flight ultrasonic distance-measuring solution. The device is optimized
MAX17120 Triple High-Voltage Scan Driver For TFT LCDThe MAX17120 includes three high-voltage level-shifting scan drivers for TFT panel integrated gate logic. Each scan driver has two channels that switch complementarily.
MAX17100 Internal-Switch Boost Regulator With Integrated Scan Driver, VCOM Calibrator, And Op Amp For TFT LCDsThe MAX17100 includes a high-voltage step-up regulator, three high-performance operational amplifiers,
MAX6010 Precision, Micropower, 3V Series Voltage Reference In SOT23The MAX6010 is a precision, low-noise, low-dropout, micropower voltage reference in a SOT23 package. This three-terminal voltage reference operates
MAX3070E +3.3V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversThe MAX3070E–MAX3079E 3.3V, ±15kV ESD-protected, RS-485/RS-422 transceivers feature one driver and one receiver. These devices

ICM7556 : Low-Power, General-purpose Timer

MAX5130B : +3V/+5V, 13-Bit, Serial, Voltage-output DACs With Internal Reference

MAX6320PUK35AZ-T : Watchdog 5-Pin P Supervisory Circuits With Watchdog And Manual Reset

MAX414CPD : Single/Dual/Quad, 28MHz, Low-Noise, Low-Voltage, Precision Op Amps The MAX410/MAX412/MAX414 single/dual/quad op amps set a new standard for noise performance in high-speed, low-voltage systems. Input voltage-noise density is guaranteed to be less than 2.4nV per root-Hz at 1kHz. A unique design not

MAX14529E : Overvoltage Protection With USB Charger Detection, LDO, And ESD Protection On D+/D- The MAX14529E/MAX14530E are overvoltage-protection devices with USB charger detection, a low-dropout (LDO) regulator, and ESD protection. These devices feature a low 35m? (typ) RON internal FET switch and protect lo

MAX6734KARHD2-T : Single-/Dual-/Triple-Voltage µP Supervisory Circuits With Independent Watchdog Output The MAX6730–MAX6735 single-/dual-/triple-voltage microprocessor (µP) supervisors feature a watchdog timer and manual reset capability. The MAX6730–MAX6735 offer factory-set reset thresholds for monitoring voltages

DS2460S+T& : SHA-1 Coprocessor With EEPROM The DS2460 SHA-1 Coprocessor with EEPROM is a hardware implementation of the ISO/IEC 10118-3 Secure Hash Algorithm (SHA-1), eliminating the need to develop software to perform the complex SHA computation required for authenticating SHA devices and for performing the va

MAX6471UT16AD3-T : 300mA LDO Linear Regulators With Internal Microprocessor Reset Circuit The MAX6469–MAX6484 are low-dropout linear regulators with a fully integrated microprocessor reset circuit. Each is available with preset output voltages from +1.5V to +3.3V in 100mV increments and delivers up to 300mA of load c

MAX6361LUT29-T : SOT23, Low-Power Microprocessor Supervisory Circuits With Battery Backup The MAX6361–MAX6364 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery control functions in microprocessor (µP) systems. The circuits significantly improve syst

MAX6469TA24BD2 : FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, DSO8 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed, Adjustable / Variable ; Package Type: Other, 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN-8 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.23 to 5 volts ; IOUT: 0.3000 amps

0-C     D-L     M-R     S-Z