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The DC508A version (1980) extended the frequency range to 1.3 GHz. | The DC508A version (1980) extended the frequency range to 1.3 GHz. | ||
Both the DC508 and the DC508A use off-the-shelf divide-by-4 counter ICs as the prescaler. | |||
The DC508 uses a [[Media:Motorola mc1697 datasheet.pdf|Motorola MC1697]] (Tek part number 156-0923-00), which is rated to 1 GHz. | |||
The DC508A uses a [[Media:Plessey sp8610 sp8611 datasheet.pdf|Plessey SP8611B]] (Tek part number 156-1302-01), which is rated to 1.5 GHz. | |||
==Specifications== | ==Specifications== |