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Dallas Logic DS2117MB product image
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Dallas Logic DS2117MB

Manufacturer
Dallas Logic
MPN
DS2117MB
LCSC Part #
C7172651
Packaging
BSOP-36-300mil
Customer #
Key Attributes
BSOP-36-300mil Signal Terminators
Datasheetpdf iconDallas Logic DS2117MB

Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Interface/Signal Terminators
ManufacturerDallas Logic
PackagingBSOP-36-300mil
Operating Temperature0℃~+70℃
Voltage - Supply4V~5.5V
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging1
Sales UnitPiece

Introduction

AI Translation

The DS2117M Ultra3 LVD/SE SCSI Terminator is both a Low Voltage Differential (LVD) and SingleEnded (SE) terminator. The multimode operation enables the designer to implement LVD in current products while allowing the end-user SE backward compatibility with legacy devices. If the device is connected in an LVD-only bus, the DS2117M will use LVD termination. If any SE devices are connected to the bus, the DS2117M will use SE termination. This is accomplished automatically inside the part by sensing the voltage on the SCSI bus DIFFSENS line. For the LVD termination, the DS2117M integrates two current sources with nine precision resistor strings. For the SE termination, one regulator and nine precision 110-ohm resistors are used. Three DS2117M terminators are needed for a wide SCSI bus.

Features

AI Translation
  • Fully compliant with Ultra2, Ultra3, and Ultra 160/m SCSI
  • Provides Multimode Low Voltage Differential/Single-Ended (LVD/SE) termination for 9 signal line pairs
  • Auto-selection of LVD or SE termination
  • 5% tolerance on SE and LVD termination resistance
  • Low power down capacitance of 3 pF
  • Onboard thermal shutdown circuitry
  • SCSI bus hot plug compatible
  • Fully supports actively negated SE SCSI signals
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