LX5255CPW Microsemi Analog Mixed Signal Group, LX5255CPW Datasheet

LX5255CPW

Manufacturer Part Number

LX5255CPW

Description

IC TERM SCSI 9LINE LVD 24TSSOP

Manufacturer

Microsemi Analog Mixed Signal Group

Type

SCSI, LVDr

Datasheet

1.LX5255CPW.pdf (7 pages)

Specifications of LX5255CPW

Number Of Terminations

Voltage - Supply

2.7 V ~ 5.25 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

28-TSSOP

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

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Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LX5255CPW

Manufacturer:

SANYO

Quantity:

Company:

Meier Automation Equipment Co., Limited

Part Number:

LX5255CPW

Manufacturer:

MSC

Quantity:

20 000

Current page: 1 of 7
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Rev. 1.1, 2006-02-27

Differential

designed to comply with the LVD

termination specification in the SPI-4

document. The LX5255 is specifically

designed for LVD only applications.

Because the LX5255 supports only

LVD, it has lower output capacitance

than multimode terminators such as

the LX5250.

standard

individual high bandwidth drivers

maximize channel separation, reduce

channel-to-channel noise and cross

talk to insure Ultra320 performance.

Differential Sense (DIFSENS) pin

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

When the LX5255 is enabled, the

The LX5255 is a Low Voltage

The LX5255 utilizes an industry

L X 5255

LVD

(LVD)

architecture.

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

terminator

D E S C R I P T I O N

The

Note: Available in Tape & Reel. Append the letters “TR” to the

supplies a voltage between 1.2V and

1.4V. In application, the terminator

DIFFB input is connected to the system

DIFSENS line. If there are no single

ended or High Voltage Differential

(HVD) devices attached to the system,

the LVD output will be enabled. If the

DIFSENS line is LOW, indicating a

single ended device, the LX5255 output

will be HiZ. If the DIFSENS line is

HIGH, indicating a HVD device, the

LX5255 output will be HiZ.

sleep/disable mode. Applying a logic

HIGH to the DISC pin puts the LX5255

in sleep mode. During sleep mode,

power dissipation is reduced to a meager

5μA while also placing all outputs and

the DIFSENS function in a HiZ state.

The LX5255 has a TTL compatible

T Y P I C A L A P P L I C A T I O N

0 to 70

LX5255 Typical Application

Integrated Products Division

(°C)

PACKAGE ORDER INFO

part number. (i.e. LX5255CPW-TR)

Microsemi

RoHS Compliant / Pb-free

Transition DC: 0442

LX5255CPW

Plastic TSSOP

24-Pin

9-Line LVD SCSI Terminator

RODUCTION DATA SHEET

Compliant with SPI-2 (Ultra2),

SPI-3 (Ultra160), and SPI-4

(Ultra320)

2.5pF Maximum Disabled Output

Capacitance

Fast Response, No External

Capacitors Required

5µA Supply Current in Disconnect

Mode

30mA Supply During Normal

Operation

Logic Command Disconnects All

Termination Lines

DIFSENS Line Driver

Current Limit and Thermal

Protection

Pin Compatible With Unitrode

UCC5640

K E Y F E A T U R E S

L X 5255

LX5255

Page 1

Related parts for LX5255CPW

LX5255CPW Summary of contents

Page 1

... T (°C) A RoHS Compliant / Pb-free Transition DC: 0442 LX5255CPW Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5255CPW-TR) Microsemi Integrated Products Division LX5255 Compliant with SPI-2 (Ultra2), SPI-3 (Ultra160), and SPI-4 (Ultra320) 2.5pF Maximum Disabled Output ...

Page 2

Term Power (V )............................................................................................-0. TERM Signal Line Voltage .............................................................................................-0. Differential Voltage .............................................................................................-0.3V to ...

Page 3

TM Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C and DISCONNECT = 0V. Parameter LVD Terminator Section VTerm Supply Current Common Mode Voltage Offset Voltage (Note 1) Differential Terminator Impedance Common Mode Impedance Output Capacitance ...

Page 4

... Comp. + LVD POWER ON & MODE DELAY Figure 1 – LX5255CPW Block Diagram ESCRIPTION Negative signal termination lines for LVD mode. Positive signal termination lines for LVD mode. Power supply pin for terminator. Connect to SCSI bus VTERM. Must be decoupled by one 4.7 F low-ESR capacitor for every three terminator devices µ ...

Page 5

TM HOST TERMPOWER VTERM LX5255 DISCONNECT DISC GND NC* Pin 1 4.7uF 4.7uF VTERM LX5255 DISC GND NC* Pin 1 4.7uF VTERM LX5255 DISC GND NC* Pin 1 4.7uF * The capacitor on Pin 1 can be placed on the ...

Page 6

TM PW 24-Pin Thin Small Shrink Outline (TSSOP) E SEATING PLANE * Lead Coplanarity Note: 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Copyright ...

Page 7

TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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