Maxim > Products > Interface, Interconnect, Signal Integrity > DS2118M

DS2118M

Ultra3 LVD/SE SCSI Terminator

Overview

Technical Documents

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Status

All versions are No Longer Available.

Description

The DS2118M 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 DS2118M will use LVD termination. If any SE devices are connected to the bus, the DS2118M 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 DS2118M integrates two current sources with nine precision resistor strings. For the SE termination, one regulator and nine precision 110Ω resistors are used. Three DS2118M terminators are needed for a wide SCSI bus.

Data Sheet

Download	Rev 2	(PDF, 420kB)
E-Mail

Key Features

Fully Compliant with SCSI SPI-2, SPI-3, SPI-4, Ultra160, and Ultra320
Provides Multimode Low-Voltage
- Differential/Single-Ended (LVD/SE)
- Termination for Nine Signal Line Pairs
Autoselection of LVD or SE Termination
5% Tolerance on SE and LVD Termination Resistance
Low Power-Down Capacitance of 3pF
On-Board Thermal Shutdown Circuitry
SCSI Bus Hot-Plug Compatible
Fully Supports Actively Negated SE SCSI Signals

Product Guides

Interface (PDF)

Reliability Reports

Reliability Report:

DS2118M.pdf

Software/Models

DS2118MB_LVD_27 IBIS Model

Ordering Information

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Tape and Reel

Sample

Part Number	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2118MB	5% 9-Channel LVD/SE Ultra2		N/A	No Longer Available	SSOP;36 pin;163.4 mm² Outline Drawing:21-0040 (PDF) Land Pattern: 90-0098 (PDF) Use pkgcode/variation: A36-4*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS2118MB+			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB+T&R			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/C02			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R+C09			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R/C03			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R/C06			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R/C08			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MB/T&R/C14			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
Part Number	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2118MC/T&R+C11			N/A	No Longer Available	SSOP; Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2118MC/T&R/C11			N/A	No Longer Available	SSOP; 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

[ 2001-05-16 ]

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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 2; 2006-01-05
This page last modified: 2007-07-25