Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

UCC5641 Datasheet(PDF) 1 Page - Texas Instruments

Part No. UCC5641
Description  Low Voltage Differential LVD SCSI 9 Line Terminator
Download  4 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo 

UCC5641 Datasheet(HTML) 1 Page - Texas Instruments

   
Zoom Inzoom in Zoom Outzoom out
 1 / 4 page
background image
UCC5641
SLUS397 - JANUARY 2000
FEATURES
• First LVD only Active Terminator
• Meets SCSI SPI-2 Ultra2 (Fast-40)
and Ultra3 / Ultra160 (Fast-80)
Standards
• 2.7V to 5.25V Operation
• Differential Failsafe Bias
• Reversed Disconnect Polarity
Low Voltage Differential (LVD) SCSI 9 Line Terminator
REF 1.25V
15
DISCNCT
27
LVD*
1
REG
11
DIFFB
4
L1–
3
L1+
26
L9–
25
L9+
56mV
SOURCE/SINK REGULATOR
REF 1.3V
1.3V
± 0.1V
0.7V > 0.5V
2.4V > 1.9V
HIGH IMPEDANCE RECEIVER
EVEN WITH POWER OFF
SINGLE
ENDED
HIGH POWER
DIFFERENTIAL
12
DIFSENS
SOURCE 5–15mA
SINK 200
µAMAXIMUM (NOISELOAD)
OPEN CIRCUIT ON POWER OFF
OR OPEN CIRCUIT IN A
DISABLED TERMINATOR MODE
10
µA
28
TRMPWR
LOW
FREQUENCY
FILTER
50Hz – 60Hz
20k
124
124
52
52
52
52
4.7
µF
0.1
µF
14
GND
SOURCE ONLY FROM TRMPWR AND THE ENABLED TERMINATIONS
2.7V to 5.25V
56mV
+–
–+
56mV
+–
56mV
–+
BLOCK DIAGRAM
UDG-99160
DESCRIPTION
The UCC5641 is an active terminator for Low Voltage Differential (LVD)
SCSI networks. This LVD only design allows the user to reach peak bus
performance while reducing system cost. The device is designed as an
active Y-terminator to improve the frequency response of the LVD Bus.
Designed with a 1.5pF channel capacitance, the UCC5641 allows for mini-
mal bus loading for a maximum number of peripherals. With the
UCC5641, the designer will be able to comply with the Fast-40 SPI-2 and
Fast-80 SPI-3 specifications. The UCC5641 also provides a much-needed
system migration path for ever improving SCSI system standards. This de-
vice is available in the 24 pin TSSOP and 28 pin TSSOP for ease of lay-
out use.
The UCC5641 is not designed for use in single ended or high voltage dif-
ferential systems.
* 28 pin package only


Html Pages

1  2  3  4 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn