lx5202 Microsemi Corporation, lx5202 Datasheet

lx5202

Manufacturer Part Number

lx5202

Description

18-line, Power Scsi Terminator

Manufacturer

Microsemi Corporation

Datasheet

1.LX5202.pdf (4 pages)

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Download datasheet (148Kb)

Rev. 1.9

H E

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

The LX5202 is an eighteen-line active termi-

nator 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 capacitance. To

enter this low-power mode, the disconnect

pin can be left open (floating) or driven high,

thereby disconnecting the terminating resis-

tors 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 disconnect mode, the LX5202 re-

During normal operation, the LX5202 con-

3/98

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

LX5202

I N

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

VENUE

Append the letter "T" to part number. (i.e. LX5202CDWPT)

- 5 M H

N N O V A T I O N

I N I T Y

, G

Receiver

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

ARDEN

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

sumes only 800µA 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.

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 LX5202 sinks

up to 200mA of current making it compatible

with today's fast active negation drivers.

placement for a variety of industry products

such as the UC5601 and UC5602.

0 to 70

The LX5202 also offers a precisely trimmed

The LX5202 is a superior, pin-for-pin re-

LX5268

(°C)

1 Meter, AWG 28

ROVE

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

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

DWP

LX5202CDWP

Plastic SOWB

28-pin, Power

LX5268

1 8 - L

Driver

R O D U C T I O N

I N E

R I V I N G

LX5202

, µ P

N C

O W E R

AV E F O R M

: 714-893-2570

S C S I T

6pF OUTPUT CAPACITANCE DURING

DISCONNECT

60µA SUPPLY CURRENT IN DISCON-

NECT MODE

800µA SUPPLY CURRENT DURING

NORMAL OPERATION

200mA 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: 5202TR

Discussion On Applying

Single-Ended SCSI Bus"

K E Y F E A T U R E S

SCSI, Request Linfinity

A T A

"Understanding The

Application Note:

- 5MH

For An In-Depth

E R M I N A T O R

LIN D

NOTE:

LX5202

H E E T

O C

#: 5202

Related parts for lx5202

lx5202 Summary of contents

Page 1

... Plastic SOWB T (°C) DWP A 28-pin, Power LX5202CDWP Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX5202CDWPT CA. 92841, 714-898-8121, F VENUE ARDEN ...

Page 2

... LX5202 TermPwr Voltage ......................................................................................................... +7V Signal Line Voltage ............................................................................................ 0V to +7V Regulator Output Current ........................................................................................... 1.2A Operating Junction Temperature Plastic (DWP Package) .......................................................................................... 150°C Storage Temperature Range ...................................................................... -65°C to 150°C Lead Temperature (Soldering, 10 seconds) ............................................................. 300° ...

Page 3

... -100mA REG I = -100mA REG REG Disconnect = 0V LX5202 (Note 2) Recommended Operating Conditions Min. Typ. Max TERM 4 70°C. TermPwr = 4.75V, Discon- A LX5202 Min. Typ. Max. 0.8 1.5 390 430 60 100 100 110 120 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

... FIGURE 1 — LX5202 BLOCK DIAGRAM V TERM VBG FIGURE 2 — 8/16-BIT SCSI SYSTEM APPLICATION HOST ...

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