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LVD SCSI 27-Line Regulator

Analog Devices

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MPN:
DS2129
Producent:
ANALOG DEVICES
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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.

Applications

* SCSI Array Backplane * SCSI Cables

* Fully Compliant with SPI-2 and SPI-3

* 2.7V to 5.25V Operation

* Differential Fail-Safe Bias

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