PRC298 Datasheet, PDF (1/3 Pages) California Micro Devices Corp – CLOCK TERMINATOR

CALIFORNIA MICRO DEVICES
Clock Terminator
Features
• Stable resistor-capacitor network
• Ideal for high-speed logic
• Low lead inductance
• Reduces board space compared to discretes
• SOT Packages
Application
• Clock termination
PRC298/299
Product Description
High speed microprocessors like Intel’s Pentium^®, DEC’s
Alpha, Motorola’s 68K and PowerPC, Sun’s SPARC,
MIPs, and other RISC-based systems require well-
controlled and precise clock signals to maintain a high
performance synchronous system. However, very fast
edge rated clock signals exhibit transmission line effects
on the clock lines resulting in undershoot and overshoot
disturbances.
CAMD’s PRC298/299 SOT resistor-capacitor integrated
thin film networks are specifically designed to eliminate
transmission line effects on high speed clock and data
lines.
These networks are fabricated on a silicon substrate
using advanced thin film technology. They have low
parasitic inductance compared to discrete and conven-
tional thick film filters and provide effective AC termina-
tion.
Why thin film RC networks? The PRC298/299 is an
integrated RC network fabricated on a silicon substrate
using advanced thin film technology. This technology
insures a fixed time constant and does not create
additional skew on the clock lines. It offers very low
parasitic inductance compared to conventional discrete
thick film-based approaches and provides effective
termination at high frequencies.
SCHEMATIC CONFIGURATIONS
2
3
R
R
C
C
C
R
1
4
PRC298
(SOT-143)
2
C
C
R
R
1
3
PRC299
(SOT-23)
© 2001 California Micro Devices Corp. All rights reserved.
215 Topaz Street, Milpitas, California 95035 
2/28/2001
Tel: [phone]
Fax: [phone]
C1730201
www.calmicro.com
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