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LX5120CDBT PDF预览

LX5120CDBT

更新时间: 2024-11-07 23:48:55
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3页 144K
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Terminator

LX5120CDBT 数据手册

 浏览型号LX5120CDBT的Datasheet PDF文件第2页浏览型号LX5120CDBT的Datasheet PDF文件第3页 
LIN DOC #: 5120  
UltraMAXTM  
LX5120  
ULTRA 27-LINE SCSI 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  
TheLX5120UltraMAXTM terminatorrepresents  
next-generation technology for SCSI termina-  
tion applications. The low-voltage BiCMOS  
architecture employed in its design offers  
superior performance to older passive and  
active techniques.  
do not necessarily adhere to recommended  
Ultra-Fast Response For Fast-20 SCSI  
Applications  
SCSI hardware design guidelines, such as the  
use of improper cable lengths and imped-  
ances. Frequently, this situation is not con-  
trolledbytheperipheralorhostdesignerand,  
when problems occur, they are the first to  
be made aware of these problems. The  
LX5120 architecture is much more tolerant  
of marginal system integrations.  
Recognizing the needs of portable and  
configurable peripherals, the LX5120 has a  
TTL compatible sleep/disable mode. To  
enter this mode, the DIS pin must be driven  
low, thereby disconnecting the LX5120 from  
the SCSI bus. Quiescent current is less than  
150µA in this mode.  
Reduced component count is also inherent  
in the LX5120 architecture. Traditional ter-  
mination techniques require large stabiliza-  
tion and transient protection capacitors of up  
to 20µF in value and size. The LX5120  
architecture does not require these compo-  
nents, allowing all the cost savings associated  
with inventory, board space, assembly, re-  
liability, and component costs.  
Split Disconnect For Mixing 16-Bit  
(Wide) Or 8-Bit (Narrow) Buses  
35mhz Channel Bandwidth  
Sleep-Mode Current Less Than 150µA  
Hot-Swap Compatible  
Linfinity's architecture employs high-speed  
adaptiveelementsforeachchannel,providing  
the fastest response possible. The channel  
bandwidth is typically 35MHz. The LX5120  
compares favorably to older linear regulator  
approaches whose bandwidth's are domi-  
nated by the output compensation capacitor  
and are limited to the 500KHz bandwidth  
region (see further discussion in the Func-  
tional Description section). Linfinity's archi-  
tecture also eliminates the output compen-  
sation capacitor typical in earlier terminator  
designs. Each is approved for use with SCSI-  
1,-2,-3, ULTRA and beyond — providing the  
highest performance alternative available to-  
day.  
NO External Compensation Capacitors  
Compatible With Active Negation  
Drivers  
Superior Pin-for-Pin Replacement For  
The UCC5620  
Another key improvement of LX5120 prod-  
uctsliesintheirabilitytoensurereliable,error-  
free communications even in systems which  
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.  
PRODUCT HIGHLIGHT  
RECEIVING WAVEFORM - 20MHZ  
DRIVING WAVEFORM - 20MHZ  
Receiver  
Driver  
1 Meter, AWG 28  
NOTE:  
For An In-Depth  
LX5120  
LX5120  
Discussion On Applying  
SCSI, Request Linfinity  
Application Note:  
LX5268  
LX5268  
PACKAGE ORDER INFO  
"Understanding The  
Single-Ended SCSI Bus"  
Plastic SSOP  
36-pin  
TJ (°C)  
DB  
0 to 125  
LX5120CDB  
Note: Available in Tape & Reel.  
Append the letter "T" to part number. (i.e. LX5120CDBT)  
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 © 2000  
Rev. 1.0 4/00  
1

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