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LX5203

更新时间: 2024-11-07 22:46:51
品牌 Logo 应用领域
美高森美 - MICROSEMI /
页数 文件大小 规格书
4页 150K
描述
9-LINE SCSI ACTIVE TERMINATOR

LX5203 数据手册

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LIN DOC #: 5203  
LX5203  
9-LINE SCSI ACTIVE TERMINATOR  
T H E I N F I N I T E P O W E R O F I N N O V A T I O N  
P R O D U C T I O N D A T A S H E E T  
DESCRIPTION  
KEY FEATURES  
6pF OUTPUT CAPACITANCE DURING  
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.  
sumes only 600µA of current. Linfinity's  
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.  
The LX5203 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 LX5203 sinks  
up to 150mA of current making it compatible  
with today's fast active negation drivers.  
The LX5203 is a superior, pin-for-pin re-  
placement for a variety of industry products  
such as the UC5603 and UC5613.  
DISCONNECT  
60µA SUPPLY CURRENT IN DISCON-  
NECT MODE  
During disconnect mode, the LX5203 re-  
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.  
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  
During normal operation, the LX5203 con-  
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.  
PRODUCT HIGHLIGHT  
RECEIVING WAVEFORM - 5MHZ  
DRIVING WAVEFORM - 5MHZ  
Receiver  
Driver  
NOTE:  
For An In-Depth  
Discussion On Applying  
SCSI, Request Linfinity  
Application Note:  
1 Meter, AWG 28  
LX5203  
LX5203  
LX5268  
LX5268  
"Understanding The  
Single-Ended SCSI Bus"  
PACKAGE ORDER INFORMATION  
Plastic DIP  
16-pin  
Plastic SOIC  
16-pin, Power  
TA (°C)  
N
DP  
0 to 70  
LX5203CN  
LX5203CDP  
Note: All surface-mount packages are available in Tape & Reel.  
Append the letter "T" to part number. (i.e. LX5203CDPT)  
L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .  
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570  
Copyright © 1997  
Rev. 1.9 7/97  
1

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