CALIFORNIA MICRO DEVICES
PRC298/299
Clock Terminator
Features
鈥?Stable resistor-capacitor network
鈥?Ideal for high-speed logic
鈥?Low lead inductance
鈥?Reduces board space compared to discretes
鈥?SOT Packages
Application
鈥?Clock termination
Product Description
High speed microprocessors like Intel鈥檚 Pentium
廬
, DEC鈥檚
Alpha, Motorola鈥檚 68K and PowerPC, Sun鈥檚 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鈥檚 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
R
C
3
R
C
C
R
C
R
1
3
PRC299
(SOT-23)
C
R
2
1
4
PRC298
(SOT-143)
漏 2001 California Micro Devices Corp. All rights reserved.
C1730201
215 Topaz Street, Milpitas, California 95035
2/28/2001
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
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