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

Data Sheet

FULL DATA SHEET (PDF, 112kB) Download   E-Mail

Description

Fast SCSI and Ultra SCSI require the use of active terminations at both ends of every cable segment in a SCSI system with single-ended drivers and receivers. The DS2105 SCSI terminator, which is fully compliant with these standards, enables the designer to gain the benefits of active termination: greater immunity to voltage drops on the TERMPWR (TERMination PoWeR) line, enhanced high-level noise immunity, intrinsic TERMPWR decoupling, and very low quiescent current consumption. The DS2105, which integrates a regulator and nine precise switched 110 ohm termination resistors into a monolithic IC, is a functionally compatible version of the DS21S07A. With relaxed output current and termination tolerances, the DS2105 is intended for high volume applications which require active termination but not the high performance of the DS21S07A. The DS2105 is offered in both 300mil and 150mil SO packages.

Key Features

Fully compliant with SCSI-1, Fast SCSI and Ultra SCSI Functionally compatible to the DS21S07A, targeted for high volume applications Provides active termination for nine signal lines Laser-trimmed 110 ohm termination resistors have 5% tolerance Low dropout voltage Power-down mode isolates termination resistors from the bus Fully supports actively negated SCSI signals On-board thermal shutdown circuitry 16-pin plastic SO (DS2105)

Reliability Reports

Reliability Report: DS2105.pdf

Software/Models

none

Ordering Information

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. More: SeeFull Data Sheet or Part 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.

Devices: 1-6 of 6

DS2105	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS2105Z/T&R+C02		N/A	No Longer Available	DS2105Z	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2105S/T&R		N/A	No Longer Available	DS21T05S	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2105Z		N/A	No Longer Available	DS21T05Z	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS2105Z+		N/A	No Longer Available		SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS2105Z/T&R		N/A	No Longer Available	DS21T05Z	Land Pattern: Not Available	0°C to +70°C	See data sheet
DS2105Z/T&R/C02		N/A	No Longer Available	DS2105Z/T&R+C02	Land Pattern: Not Available	0°C to +70°C	See data sheet

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