35 MHz count rate — where the timing margin lands
The CD74HC4520MT: At 35 MHz count rate, this part handles clock distribution up to the mid-range of typical 74HC logic. If your system runs a 20 MHz bus, you've got 15 MHz of headroom before the counter misses an edge. The synchronous timing and dual positive/negative trigger type give flexibility for clock-domain crossing without adding external gate delay. Pair it with the asynchronous reset for deterministic power-up sequencing — the counter resets independent of the clock, which simplifies daisy-chain initialization in multi-stage divider chains.
16-SOIC footprint — what it connects to
No exotic footprint, no via-in-pad requirement — just a straightforward reflow profile. The dual 4-bit elements pack two independent up counters in one body, saving board area compared to two single 4-bit counters in separate packages.
Sourcing posture: quoted to order, not a spot gamble
This part is active. We source it through franchised and independent distribution and confirm availability and current pricing at quote time.