P4C1049/P4C1049L - HIGH SPEED 512K x 8 STATIC CMOS RAM
Fꢀꢁꢂꢉe 1. oꢂꢊpꢂꢊ lꢈꢃd
Fꢀꢁꢂꢉe 2. theveꢆꢀꢆ Eqꢂꢀvꢃꢄeꢆꢊ
* including scope and test fixture.
nꢈꢊe:
Because of the ultra-high speed of the P4C1049/L, care must be taken
whentestingthisdevice;aninadequatesetupcancauseanormalfunction-
ing part to be rejected as faulty. Long high-inductance leads that cause
supply bounce must be avoided by bringing the VCC and ground planes
directly up to the contactor fingers. A 0.01 µF high frequency capacitor
is also required between VCC and ground. To avoid signal reflections,
proper termination must be used; for example, a 50Ω test environment
should be terminated into a 50Ω load with 1.73V (Thevenin Voltage) at
the comparator input, and a 116Ω resistor must be used in series with
DOꢁT to match 166Ω (Thevenin Resistance).
orDEring inFormation
Document # SRAM128 REV C
Page 7
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