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MC10H644

ON Semiconductor
Part Number MC10H644
Manufacturer ON Semiconductor
Description 68030/040 PECL-TTL CLOCK DRIVER
Published Apr 26, 2005
Detailed Description www.DataSheet4U.com MC10H644, MC100H644 68030/040 PECL to TTL Clock Driver The MC10H/100H644 generates the necessary cl...
Datasheet PDF File MC10H644 PDF File

MC10H644
MC10H644

Overview
www.
DataSheet4U.
com MC10H644, MC100H644 68030/040 PECL to TTL Clock Driver The MC10H/100H644 generates the necessary clocks for the 68030, 68040 and similar microprocessors.
The device is functionally equivalent to the H640, but with fewer outputs in a smaller outline 20−lead PLCC package.
It is guaranteed to meet the clock specifications required by the 68030 and 68040 in terms of part−to−part skew, within−part skew and also duty cycle skew.
The user has a choice of using either TTL or PECL (ECL referenced to +5.
0 V) for the input clock.
TTL clocks are typically used in present MPU systems.
However, as clock speeds increase to 50 MHz and beyond, the inherent superiority of ECL (particularl...


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