Dallas Semiconductor DS2108 Differential SCSI Switchable Terminator Datasheet

The DS2108 SCSI Terminator is a terminator for High Voltage Differential (HVD) SCSI systems requiring switchable termination.

Brand: Dallas Semiconductor
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 5
File format: PDF
File size: 67 KB
Published: 03 July, 2012
Updated: 30 September, 2023
MD5 checksum: 4EECDFE0CAA537A5D0058C778E07E35B
PDF: Dallas Semiconductor DS2108 Differential SCSI Switchable Terminator Datasheet PDF

About this manual

The DS2108 is a 24-pin SOIC integrated circuit designed for High Voltage Differential (HVD) SCSI systems. It integrates eighteen 330-ohm and nine 150-ohm precise switched termination resistors into a single chip, saving board space compared to conventional resistor SIPs. The device allows termination resistors to be isolated from the SCSI bus via software or hardware control.

What's inside

FEATURES
DESCRIPTION
FUNCTIONAL DESCRIPTION
BLOCK DIAGRAM
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
DC CHARACTERISTICS
PACKAGE DIMENSIONS

Specifications

Package Type	24-pin plastic SOIC
Termination Resistance (Rrtw)	313.5 to 346.5 ohms
Termination Resistance (Rone)	142.5 to 157.5 ohms
Power-down Current	1 to 2 mA
Power-down Capacitance	5 to 6 pF

Frequently asked questions

How many DS2108s are required per 8-bit SCSI device?

Two DS2108s are required per 8-bit SCSI device.

How many DS2108s are required per 16-bit SCSI device?

Three DS2108s are required per 16-bit SCSI device.

How is the DS2108 removed from the circuit?

The device is removed from the circuit by bringing the power down pin (PD) low.

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