lx5203 Microsemi Corporation, lx5203 Datasheet

lx5203

Manufacturer Part Number

lx5203

Description

9-line Scsi Active Terminator

Manufacturer

Microsemi Corporation

Datasheet

1.LX5203.pdf (4 pages)

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Download datasheet (148Kb)

Rev. 1.9

H E

The LX5203 is a nine-line active terminator

for the SCSI parallel bus. This SCSI standard

recommends active termination at both ends

of the SCSI bus.

quires a meager 60µA of supply current,

while offering only 6pF of output capaci-

tance. To enter this low-power mode, the

disconnect pin can be left open (floating) or

driven high, thereby disconnecting the ter-

minating resistors and placing the internal

low dropout regulator into low-power mode.

In disconnect mode each termination line

presents a high impedance to the SCSI bus

with the overall effect being to preserve high

signal integrity and yield subsequent reliable,

error-free communications.

IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.

During disconnect mode, the LX5203 re-

During normal operation, the LX5203 con-

7/97

N F I N I T E

E C E I V I N G

11861 W

O W E R

ESTERN

AV E F O R M

O F

D E S C R I P T I O N

LX5203

I N

Note: All surface-mount packages are available in Tape & Reel.

0 to 70

VENUE

P A C K A G E O R D E R I N F O R M A T I O N

Append the letter "T" to part number. (i.e. LX5203CDPT)

- 5 M H

(°C)

N N O V A T I O N

I N I T Y

, G

Receiver

ARDEN

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

sumes only 600µA of current.

proprietary BiCMOS low dropout regulator

architecture enables oscillation-free opera-

tion with minimal output capacitance.

Linfinity recommends a minimum stabiliza-

tion capacitor value of 2.2µF.

channel output current specified to a 5%

tolerance. The maximum value of the output

current is trimmed as closely as possible to

the SCSI standard maximum specification to

give the highest possible noise margin for

fast SCSI operation. And the LX5203 sinks

up to 150mA of current making it compatible

with today's fast active negation drivers.

placement for a variety of industry products

such as the UC5603 and UC5613.

The LX5203 also offers a precisely trimmed

The LX5203 is a superior, pin-for-pin re-

LX5268

Plastic DIP

16-pin

1 Meter, AWG 28

LX5203CN

ROVE

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

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

LX5268

Driver

9 - L

Plastic SOIC

16-pin, Power

R O D U C T I O N

LX5203CDP

Linfinity's

I N E

R I V I N G

LX5203

SCSI A

N C

AV E F O R M

: 714-893-2570

C T I V E

6pF OUTPUT CAPACITANCE DURING

DISCONNECT

60µA SUPPLY CURRENT IN DISCON-

NECT MODE

600µA SUPPLY CURRENT DURING

NORMAL OPERATION

150mA SINK CURRENT FOR ACTIVE

NEGATION

LOGIC COMMAND DISCONNECTS ALL

TERMINATION LINES

CURRENT LIMIT AND THERMAL

PROTECTION

COMPATIBLE WITH SCSI 1, 2 AND 3

STANDARDS

CONSULT FACTORY FOR APPLICATION

TEST REPORT: 5203TR

K E Y F E A T U R E S

A T A

Discussion On Applying

Single-Ended SCSI Bus"

SCSI, Request Linfinity

"Understanding The

- 5MH

E R M I N AT O R

Application Note:

For An In-Depth

LIN D

NOTE:

LX5203

H E E T

O C

#: 5203

Related parts for lx5203

lx5203 Summary of contents

Page 1

... Plastic DIP T (° 16-pin LX5203CN Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX5203CDPT CA. 92841, 714-898-8121, F VENUE ARDEN ROVE ...

Page 2

... LX5203 TermPwr Voltage ......................................................................................................... +7V Signal Line Voltage ............................................................................................ 0V to +7V Regulator Output Current ........................................................................................... 0.4A Operating Junction Temperature Plastic (N, DP Packages) ....................................................................................... 150°C Storage Temperature Range ...................................................................... -65°C to 150°C Lead Temperature (Soldering, 10 seconds) ............................................................. 300° ...

Page 3

... TERM -50mA REG I = -50mA REG REG Disconnect = 0V LX5203 (Note 2) Min. Typ. Max TERM 2.2 0 125 T 70°C. TermPwr = 4.75V, Discon- A LX5203 Min. Typ. Max. 0.6 1.2 194 208 60 100 104 110 116 100 110 120 2.7 2.9 -20.3 -21.8 -23 -19.0 -21.8 -23 -19.5 -21.8 -23 -18.0 -21.8 -23 10 400 ...

Page 4

... REGOUT 2.2µF Note: Add third LX5203 for 16-bit SCSI PRODUCTION DATA - Information contained in this document is proprietary to Lin Finity, and is current as of publication date. This document may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of all parameters ...

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