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DS2129
LVD SCSI 27-Line Regulator


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Description
FULL DATA SHEET (PDF, 196kB)
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The DS2129 is a triple-output voltage regulator for 27-line, low-voltage-differential (LVD) SCSI termination for SPI-2 and SPI-3 applications using LVD termination networks. The device provides reference voltages and bias currents for LVD-termination resistor pi (π) networks. With a pi network (475Ω, 121Ω, 475Ω), the DS2129 meets the common-mode bias, differential bias, and termination-impedance requirements of SPI-2 (Ultra2) and SPI-3 (Ultra3). The device also provides a 1.3V output for DIFFSENSE signaling, and includes protection features such as thermal shutdown and active current limiting.

Key Features   Applications/Uses
  • Fully Compliant with SPI-2 and SPI-3
  • 2.7V to 5.25V Operation
  • Differential Fail-Safe Bias

 
  • SCSI Array Backplane
  • SCSI Cables

    Key Specifications:   SCSI Terminators
    Part Number Interface Standards Single-Ended Low Voltage Differential High Voltage Differential RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price**
    DS2129  Ultra2 SCSI
    Ultra3 SCSI
    No Yes No No SOIC/16 62 $1.21 @ 1k
    See All SCSI Terminators (11)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    Document Ref.: xxxx; 2006-02-09
    This page last modified: 2008-03-19



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