400 MHz ceiling — what the fanout drives
The CY28419ZC is a processor-specific clock generator built around a PLL that accepts a single-ended crystal input and produces up to 25 clock outputs, with a maximum output frequency of 400 MHz. The 1:25 fanout ratio means one reference crystal feeds the PLL, and the part distributes 25 synchronised clock lanes — consolidating what would otherwise require multiple oscillators or a separate fanout buffer. Outputs are differential even though the input is single-ended (Differential - Input:Output No/Yes); the PLL generates the differential pair internally, so the board layout needs differential routing on the output side.
Supply rail and temperature envelope
Operates from a 3.135 V to 3.465 V supply — a narrow 3.3 V ±5 % rail. Packaged in a 56-lead BSSOP with 0.295-inch (7.50 mm) body width — the wide-body SSOP footprint. The supplier device package is listed as 56-SSOP, which is the same mechanical outline. Surface-mount assembly with a standard fine-pitch solder profile.
Lifecycle and sourcing posture
This is a current-production part, not a phase-out or last-time-buy item. No pin-compatible second-source or cross-reference is recorded in the manufacturer data.