DS21T07

更新时间： 2024-10-27 22:50:51

品牌	Logo	应用领域
达拉斯 - DALLAS		/
页数	文件大小	规格书
7页	104K
描述
SCSI Terminator

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中文翻译

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数据手册

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DS21T07 数据手册

DS21T07

SCSI Terminator

www.dalsemi.com

FEATURES

PIN ASSIGNMENT

ꢀ Fully compliant with SCSI–1, Fast SCSI and

Ultra SCSI

TERMPWR1

VREF2

ꢀ Backward compatible to the DS2107,

DS2107A, and DS21S07

ꢀ Provides active termination for nine signal

lines

ꢀ Laser–trimmed 110 ohms termination

resistors have 2% tolerance

ꢀ Low dropout voltage regulator

ꢀ Power–down mode isolates termination

resistors from the bus

ꢀ SCSI bus hot–plug compatible

ꢀ Fully supports actively negated SCSI signals

ꢀ Onboard thermal shutdown circuitry

ꢀ 16–pin plastic SOIC (DS21T07S) and 20–pin

plastic TSSOP (Thin Shrink Small Outline

Package) (DS21T07E)

VREF1

GND

TERMPWR2

DS21T07S 16-pin SOIC (300-mil)

TERMPWR1

HS-GND

VREF2

HS-GND

VREF1

GND

HS-GND

TERMPWR2

DS21T07E 20-pin TSSOP (173-mil)

ACTUAL FOOTPRINT SIZE

0.41”

0.26”

0.41”

0.27”

DS21T07S

DS21T07E

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 DS21T07 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 DS21T07

integrates a regulator and nine precise switched 110 ohms termination resistors into a monolithic IC. The

DS21T07 can be electrically isolated from the SCSI bus without physical removal from the SCSI device.

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与DS21T07相关器件

型号	品牌	获取价格	描述	数据表
DS21T07E	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20
DS21T07E	ROCHESTER	获取价格	9-LINE 110 ohm SCSI BUS TERMINATOR, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20
DS21T07E/T&R	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20
DS21T07E+	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20
DS21T07E+T&R	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20
DS21T07S	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO16, 0.300 INCH, PLASTIC, SOIC-16
DS21T07S+	ROCHESTER	获取价格	9-LINE 110 ohm SCSI BUS TERMINATOR, PDSO16, 0.300 INCH, PLASTIC, SOIC-16
DS21T07S+T&R	MAXIM	获取价格	SCSI Terminator, 9-Line, 110ohm, PDSO16, 0.300 INCH, PLASTIC, SOIC-16
DS21T09	DALLAS	获取价格	Plug and Play SCSI Terminator
DS21T09S	DALLAS	获取价格	Plug and Play SCSI Terminator