LX5246CPW MICROSEMI, LX5246CPW Datasheet

LX5246CPW

Manufacturer Part Number

LX5246CPW

Description

Manufacturer

MICROSEMI

Type

SCSI Terminationr

Datasheet

1.LX5246CPW.pdf (7 pages)

Specifications of LX5246CPW

Number Of Bits

Operating Supply Voltage (typ)

3.3/5V

Operating Supply Voltage (max)

5.25V

Package Type

TSSOP

Mounting

Surface Mount

Pin Count

Operating Temperature Classification

Commercial

Lead Free Status / RoHS Status

Not Compliant

Current page: 1 of 7
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Rev. 0.8a,2005-03-02

The LX5245/5246 ICs are Low Voltage

Differential (LVD) Terminators designed to

comply with the LVD termination specification in

the SPI-4 document. The LX5245/5246 are

designed specifically for LVD applications.

Because the LX5245/ 5246 support only LVD,

they have lower output capacitance than

multimode terminators such as the LX5241.

The LX5245/5246 Utilize Linfinity’s UltraMAX

Technology which delivers the ultimate in SCSI

bus performance while saving component cost and

board area. Elimination of the external capacitors

also mitigates the need for a lengthy capacitor

selection process. The individual high bandwidth

drivers also maximize channel separation and

reduces channel-to-channel noise and cross talk.

The high-bandwidth UltraMAX architecture

insures ULTRA-2 performance, while providing a

clear migration path to ULTRA-3 and beyond.

H E

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

N F I N I T E

(+)

(-)

O W E R

11861 W

LX5245/46

O F

ESTERN

D E S C R I P T I O N

I N

N N O V A T I O N

VENUE

I N I T Y

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

the part number. (i.e. LX5245CPW-TR)

0 to 70

, G

When The LX5245/5246 Are Enabled, The

Differential Sense (DIFFSENSE) Pin Supplies

A Voltage Between 1.2V And 1.4V. In

application, the terminator DIFFSENSE output is

connected to the system DIFFSENSE line. If

there are no single ended or HVD devices

attached to the system the LVD output will be

enabled. If the DIFFSENSE line is LOW,

indicating a single ended device, the LX5245/

5246 output will be HiZ. If the DIFFSENSE line

is HIGH, indicating a high voltage differential

device the LX5245/5246 output will be HiZ.

The LX5245/5246 ICs Have A TTL

Compatible DISCONNECT Pin. The LX5245

is active LOW and the LX5246 is active HIGH.

During sleep mode, power dissipation is reduced

to a meager 5µA, while also placing all outputs in

a HI Z state. Also during sleep mode, the

DIFFSENSE function is disabled and is placed in

a HI Z state.

P R O D U C T H I G H L I G H T

(°C)

ARDEN

PACKAGE ORDER INFO

I C R O E L E C T R O N I C S

ROVE

, CA. 92841, 714-898-8121, F

UltraMAX

Plastic TSSOP

24-Pin

Transition DC: 0442

LX5245CPW

LX5246CPW

RoHS / Pb-free

-100mV

9 - L

100mV

R E L I M I N A R Y

I N E

™

L V D S C S I T

N C

LX5245/46

: 714-893-2570

= V

NEGATED

(-)

- V

A T A

(+)

E R M I N A T O R

2.5pF Typical Disabled Output

Capacitance

Fast Response, No External

Capacitors Required

5µA Supply Current In

Disconnect Mode

20mA Supply Current During

Normal Operation

Logic Command Disconnects All

Termination Lines

Diffsense Line Driver

Current Limit And Thermal

Protection

Compliant With SPI-2 (Ultra2),

SPI-3 (Ultra160),

Mention 5249 as LVD Only

Terminator With Pinout

Compatible With Industry

Standard Multi-mode

Terminators

Pin Compatible With Unitrode

UCC5640

, Logic =0

K E Y F E A T U R E S

LX5245 / 5246

H E E T

Related parts for LX5246CPW

LX5246CPW Summary of contents

Page 1

... DIFFSENSE function is disabled and is placed state 100mV 0V -100mV PACKAGE ORDER INFO Plastic TSSOP PW 24-Pin T (°C) A RoHS / Pb-free Transition DC: 0442 LX5245CPW LX5246CPW Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5245CPW-TR CA. 92841, 714-898-8121, F VENUE ARDEN ROVE ™ LX5245 / 5246 ...

Page 2

LX5245/5246 ...

Page 3

UltraMAX ...

Page 4

LX5245/5246 V TERMPWR DISC DIFFSENSE DIFF ...

Page 5

UltraMAX Pin Designator Description 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9- Negative signal termination ...

Page 6

LX5245/5246 ...

Page 7

... LinFinity. Product referred to herein is offered in sample form only, and Linfinity reserves the right to change or discontinue this proposed product at any time. Rev. 0. 50k 50k 4 UltraMAX is a trademark of Linfinity Microelectronics Inc. Linfinity is a division of Microsemi Inc. LX5245/5246 4.7 7 ...

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