MC10H644
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
68030/040 PECL-TTL Clock Driver
MC10H644 MC100H644
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.
68030/040 PECL- TTL CLOCK
DRIVER
- Generates Clocks for 68030/040
- Meets 68030/040 Skew Requirements
- TTL or PECL Input Clock
- Extra TTL and ECL Power/Ground Pins
- Within Device Skew on Similar Paths is 0.5 ns
- Asynchronous Reset
- Single +5.0V Supply
The user has a choice of using either TTL or PECL (ECL referenced to +5.0V) for the input clock. TTL clocks are typically used in present MPU systems. However, as clock speeds increase to 50MHz and beyond, the inherent superiority of ECL (particularly...
