DS9097U-E25 (DB25 externally powered adapter)
DS9097U-E25
DB25 with external power supply RS232 to 1-Wire adapter
Features
- True-ground interface to an RS232 COM Port for reading and writing 1-Wire devices
- Works with bipolar as well as unipolar logic signals
- Compatible to COM ports (±)6V to (±)12V
- Supports reading and writing at regular and Overdrive speeds
- Provides strong pull-up to 5V for Temperature, Crypto and EEPROM 1-Wire devices
- Programs 1-Wire EPROM devices (with external 12V power supply only)
- Communicates at data rates of 9.6 (default), 9.2, 57.6 and 115.2 kbits/
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. All DS9097U adapters are based on the DS2480B Serial 1-Wire Line Driver chip and therefore are not a plug-in replacement for the DS9097 or DS9097E. The RXD/TXD Polarity Select input of the DS2480B is tied to Vdd (non-inverting). Free software drivers can be downloaded from here .
The DS9097U-E25 adapter,will with external power is supplied. Without EPROM programming the external power may be anywhere in the range of 6 to 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 (....) 5V check whether the COM port will not be damaged by 5V on its RXD input.
Weight: 0.20 lbs
|