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DS2125

Ultra3 LVD/SE 15-Line SCSI Terminator

Industry's Most Stable LVD/SE, 15-Line SCSI Terminator

Overview

Technical Documents

Ordering Info

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Status

All versions are No Longer Available. See Ordering Information for recommended replacements.

Description

The DS2125 Ultra3 LVD/SE SCSI terminator is both a low-voltage differential (LVD) and single-ended (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 DS2125 uses LVD termination. If any SE devices are connected to the bus, the DS2125 uses SE termination, which is accomplished automatically inside the part by sensing the voltage on the SCSI bus DIFFSENS line.

For the LVD termination, the DS2125 integrates two current sources with 15 precision resistor strings. For the SE termination, one regulator and 15 precision 110Ω resistors are used. Two DS2125 terminators are needed for a wide SCSI bus.

Data Sheet

Download	Rev 3	(PDF, 188kB)
E-Mail

Key Features

Fully Compliant with Ultra3 SCSI
Provides Multimode Low-Voltage Differential/Single-Ended (LVD/SE) Termination for 15 Signal Line Pairs
Auto-Selection of LVD or SE Termination
5% Tolerance on SE and LVD Termination Resistance
Low 3pF Power-Down Capacitance
On-Board Thermal-Shutdown Circuitry
SCSI Bus Hot-Plug Compatible
Fully Supports Actively Negated SE SCSI Signals

Applications/Uses

Network-Attached Storage (NAS)
RAID Systems
SCSI Cables
SCSI Host Bus Adapter (HBA) Cards
Servers
Storage Area Networks (SANs)

Product Guides

Interface (PDF)

Reliability Reports

Reliability Report:

DS2125.pdf

Software/Models

none

Ordering Information

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Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2125		N/A	No Longer Available		LQFP;48 pin;82.8 mm² Outline Drawing:21-0054 (PDF) Land Pattern: 90-0093 (PDF) Use pkgcode/variation: C48-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS2125+		N/A	No Longer Available		LQFP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2125-C01/T&R		N/A	No Longer Available		LQFP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2125/T&R+C01		N/A	No Longer Available	DS2125-C01/T&R	LQFP; Land Pattern: Not Available	0°C to +70°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

More Information

New Product Press Release

[ 2003-04-17 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 3; 2006-01-27
This page last modified: 2007-08-07