DESCRIPTION

KEY FEA TURES

s 3.5pF OUTPUT CAPACITANCE DURING

DISCONNECT

s 60µA SUPPLY CURRENT IN DISCON-

NECT MODE

s 600µA SUPPLY CURRENT DURING

NORMAL OPERATION

s 150mA SINK CURRENT FOR ACTIVE

NEGATION

s LOGIC COMMAND DISCONNECTS ALL

TERMINATION LINES

s CURRENT LIMIT AND THERMAL

PROTECTION

s COMPATIBLE WITH SCSI 1, 2 AND 3

STANDARDS

s CONSULT FACTORY FOR APPLICATION

TEST REPORT: 5213TR

The LX5213 is a nine-line active terminator

for the SCSI parallel bus. This SCSI standard

recommends active termination at both ends

of the SCSI bus.

During disconnect mode, the LX5213 re-

quires a meager 60µA of supply current while

offering only 3.5pF of output capacitance.

To enter this low-power mode, the discon-

nect pin can be left open (floating) or driven

high, thereby disconnecting the terminating

resistors and placing the internal low dropout

regulator into low-power mode. In discon-

nect 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.

During normal operation, the LX5213 con-

sumes only 600µA of current, which is the

lowest enabled supply current of any termi-

nator available on the market today.

Linfinity's proprietary BiCMOS low dropout

regulator architecture enables this unique

and very efficient operating characteristic.

The LX5213 also offers a precisely trimmed

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 LX5213 sinks

up to 150mA of current, making it compatible

with today's fast active negation drivers.

The LX5213 is a superior, pin-for-pin re-

placement for a variety of industry products

such as the UC5603 and UC5613.

P ACKAGE ORDER INFORMA TION

T

Plastic DIP

16-pin

N

PWP

Plastic SOIC

16-pin, Power

DP

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

Append the letter "T" to part number. (i.e. LX5213CDPT)

0 to 70

LX5213CN

LX5213CPWP

LX5213CDP

Plastic TSSOP

24-pin, Power

OF

LX5213

PRODUCT HIGHLIGHT

Receiver

LX5213

LX5213

LX5268

LX5268

1 Meter, AWG 28

Driver

NOTE:

For An In-Depth

Discussion On Applying

SCSI, Request Linfinity

Application Note:

"Understanding The

Single-Ended SCSI Bus"

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

Copyright © 1997

Rev. 1.9

7/97

1