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PACR4G

更新时间： 2024-09-29 22:44:35
品牌 Logo 应用领域
CALMIRCO /
页数 文件大小 规格书
3页 90K
描述
HIGH PERFORMANCE BUS TERMINATION NETWORK

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中文翻译

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PACR4G 数据手册

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CALIFORNIA MICRO DEVICES  
PACR4G  
High Performance BusTermination Network  
Features  
Applications  
• Designed especially for High Performance  
computers/servers  
• High Performance servers  
• High Performance desk top systems  
• GTL, NTL, ECL terminator  
• Provides high speed bus termination  
• Reduces ground bounce with ground  
pin placement / Ultra low crosstalk  
• Terminates 20 lines in a QSOP package  
Product Description  
High speed microprocessors demand unique, high  
speed bus termination. The PACR4G Termination  
Network provides 20 terminations per package and  
meets the requirements for high speed terminations.  
This integrated solution is silicon-based and has the  
same reliability characteristics as any of today’s micro-  
processor products. The thin film resistors have very  
high stability over temperature, over applied voltage and  
over life. In addition the QSOP industry standard  
packaging is easy to handle in manufacturing and yields  
a high reliability similar to other semiconductor compo-  
nents.  
This Termination Network provides high performance,  
high reliability, and low cost through manufacturing  
efficiency. The termination resistor elements are  
fabricated using state-of-the-art thin film manufacturing.  
SCHEMATIC CONFIGURATION  
STANDARD SPECIFICATIONS  
Absolute Tolerance (R)  
Operating Temperature Range  
Power Rating/Resistor  
Storage Temperature  
Package Power Rating  
Crosstalk  
1%  
24 23 22 21 20 19 18 17 16 15 14 13  
0°C to 70°C  
100mW  
R
R
R
R
R
R
R
R
R
R
–65°C to 150°C  
1.00w, Max  
< 2% typical  
R
R
R
R
R
R
R
R
R
R
STANDARD VALUES  
1
2
3
4
5
6
7
8
9
10 11 12  
R (W)  
Code  
470  
500  
560  
680  
900  
47  
50  
56  
68  
90  
STANDARD PART ORDERING INFORMATION  
Package Ordering Part Number  
R Code  
470  
Pins  
24  
Style  
QSOP  
QSOP  
QSOP  
QSOP  
QSOP  
Tubes  
Tape & Reel  
Part Marking  
PAC470R4GQ/T  
PAC500R4GQ/T  
PAC560R4GQ/T  
PAC680R4GQ/T  
PAC680R4GQ/T  
PAC470R4GQ/R  
PAC500R4GQ/R  
PAC560R4GQ/R  
PAC680R4GQ/R  
PAC680R4GQ/R  
PAC470R4GQ  
PAC500R4GQ  
PAC560R4GQ  
PAC680R4GQ  
PAC680R4GQ  
500  
24  
560  
24  
680  
24  
900  
24  
© 2000 California Micro Devices Corp. All rights reserved.  
C0970500  
7/18/2000 215 Topaz Street, Milpitas, California 95035  
Tel: (408) 263-3214  
Fax: (408) 263-7846  
www.calmicro.com  
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