Datasheet > UCC5673_15

UCC5673_15

更新时间： 2024-09-21 02:58:47

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
7页	57K
描述
Multimode (LVD/SE) SCSI 9 Line Terminator

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中文翻译

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数据手册

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UCC5673_15 数据手册

UCC5673

Multimode (LVD/SE) SCSI 9 Line Terminator

FEATURES

DESCRIPTION

• Auto Selection Multi-Mode Single

Ended or Low Voltage Differential

Termination

The UCC5673 Multi-Mode Low Voltage Differential and Single Ended Ter-

minator is both a single ended terminator and a low voltage differential ter-

minator for the transition to the next generation SCSI Parallel Interface

(SPI-3). The low voltage differential is a requirement for the higher speeds

at a reasonable cost and is the only way to have adequate skew budgets.

• 2.7V to 5.25V Operation

• Differential Failsafe Bias

The automatic mode select/change feature switches the terminator be-

tween Single Ended or LVD Termination, depending on the bus mode. If

the bus is in High Voltage Differential Mode, the terminator lines transition

into a High Impedance state.

• Built-in SPI-3 Mode Change Filter/

Delay

• Meets SCSI-1, SCSI-2, Ultra2 (SPI-2

LVD) and Ultra3/Ultra160 Standards

The UCC5673 is SPI-3, SPI-2, and SCSI-2 compliant. This device is of-

fered in a 28 pin TSSOP package to minimize the footprint. The UCC5673

is also available in a 36 pin MWP package.

• Supports Active Negation

• 3pF Channel Capacitance

• Reversed Disconnect Polarity

BLOCK DIAGRAM

HPD

2.1V

FILTER/

DELAY

DIFFB

LVD

0.6V

DIFSENS

REF 1.3V

16 DIFSENS

ENABLE

TRMPWR

SOURCE/SINK

REGULATORS

SE REF

2.7V

110

124

SW1

56mV

10µA

LVD REF

1.25V

–

L1–

L1+

56mV

–

DISCNCT

ENABLE

SE GROUND

SWITCH

110

OTHER

SWITCHES

56mV

MODE

SW1

HS/GND

GND

–

26 L9–

25 L9+

124

LVD

HPD

56mV

DOWN DOWN

–

DOWN

OPEN

DISCNCT OPEN

SE GROUND

SWITCH

REG

Note: Indicated pinout is for 28 pin TSSOP package.

UDG-99162

SLUS438 - FEBRUARY 2000

12 3 4 5 6 7

中文翻译

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