PACR4G Datasheet, PDF (1/3 Pages) California Micro Devices Corp – HIGH PERFORMANCE BUS TERMINATION NETWORK

CALIFORNIA MICRO DEVICES
High Performance Bus Termination Network
Features
• Designed especially for High Performance
computers/servers
• Provides high speed bus termination
• Reduces ground bounce with ground
pin placement / Ultra low crosstalk
• Terminates 20 lines in a QSOP package
Applications
• High Performance servers
• High Performance desk top systems
• GTL, NTL, ECL terminator
PACR4G
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 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.
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.
STANDARD SPECIFICATIONS
Absolute Tolerance (R)
±1%
Operating Temperature Range
0°C to 70°C
Power Rating/Resistor
100mW
Storage Temperature
–65°C to 150°C
Package Power Rating
1.00w, Max
Crosstalk
<±2% typical
STANDARD VALUES
R (W)
Code
47
470
50
500
56
560
68
680
90
900
SCHEMATIC CONFIGURATION
24 23 22 21 20 19 18 17 16 15 14 13
RRRR
RR
RR R R
RRRR
RR
RR R R
1 2 3 4 5 6 7 8 9 10 11 12
R Code
470
500
560
680
900
Pins
24
24
24
24
24
STANDARD PART ORDERING INFORMATION
Package
Ordering Part Number
Style
Tubes
Tape & Reel
QSOP
PAC470R4GQ/T
PAC470R4GQ/R
QSOP
PAC500R4GQ/T
PAC500R4GQ/R
QSOP
PAC560R4GQ/T
PAC560R4GQ/R
QSOP
PAC680R4GQ/T
PAC680R4GQ/R
QSOP
PAC680R4GQ/T
PAC680R4GQ/R
© 2000 California Micro Devices Corp. All rights reserved.
7/18/2000 215 Topaz Street, Milpitas, California 95035
Tel: [phone]
Fax: [phone]
Part Marking
PAC470R4GQ
PAC500R4GQ
PAC560R4GQ
PAC680R4GQ
PAC680R4GQ
C0970500
www.calmicro.com
1