PLL-based zero delay buffer for single-ended clock trees
The Cypress CY2305SXC-1 is a PLL-based zero delay buffer that takes one single-ended clock input and distributes it to five outputs with near-zero propagation delay. It operates from a 3V to 3.6V supply and supports clock frequencies up to 133.33 MHz. The part is housed in an 8-SOIC package and is rated for the commercial temperature range of 0°C to 70°C, making it suitable for indoor equipment such as networking gear, servers, and office appliances where the ambient temperature stays within that band.
1:5 fanout and supply tolerance
The 1:5 input-to-output ratio means a single reference clock drives five loads, which simplifies the clock tree layout and reduces the number of buffers needed. The 3V to 3.6V supply range aligns with standard 3.3V logic families; the 0.3V tolerance on the low side gives some headroom for rail droop under load. Because the outputs are single-ended (no differential signaling), the board designer must keep trace lengths matched and impedance-controlled to minimize skew between the five copies.
Active lifecycle with ROHS3 compliance
It is ROHS3 compliant, so it meets the latest EU restriction on hazardous substances and can be used in new designs without a waiver.