Key facts
- Brand
- Dallas Semiconductor
- Model
- DS2109
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-03
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Dallas Semiconductor DS2109DK Demo Board Product Description
The DS2109DK is a demonstration board designed for use in Plug and Play SCSI motherboards and host bus adapters. It provides automatic active termination for 18 pairs of signal lines and is available in a 28-pin SOIC package. The board supports both narrow and wide SCSI configurations.
Read onlineDallas Semiconductor DS2109 specifications
| Package Type | 28-pin SOIC package |
|---|---|
| Signal Lines Terminated | 18 pairs of signal lines |
| Compatible Chipset | DS21098 |
Source: Dallas Semiconductor DS2109DK Demo Board Product Description
All Dallas Semiconductor DS2109 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How is the DS2109DK used for a narrow bus?
Connect the SCSI cable into J2 of the DS2109DK.
From: Dallas Semiconductor DS2109DK Demo Board Product Description
How is the DS2109DK used at the end of a wide bus?
Connect to J1.
From: Dallas Semiconductor DS2109DK Demo Board Product Description
What is the quiescent current consumption?
The power down capacitance of the terminating resistors is low, with a specific value of 3 pF.
From: Dallas Semiconductor DS2109 Plug and Play SCSI Terminator Datasheet
How does the device sense bus termination?
It uses either onboard current sensing circuitry or onboard ground detect circuitry to automatically switch off if an external device is connected.
From: Dallas Semiconductor DS2109 Plug and Play SCSI Terminator Datasheet
How does the DS2109 detect bus termination status?
It uses either bus‑ground sensing or bus‑current sensing circuitry to automatically connect or disconnect the termination resistors.
What is the recommended operating temperature range?
The DS2109 is specified to operate from 0 °C to 70 °C.