What this zero-delay buffer does on the board
The Renesas 23S05-1DCG is a single-circuit zero-delay buffer — it takes one LVTTL clock input and regenerates five CMOS or LVTTL outputs with edge alignment to the input. The PLL locks the output edges to the input edge, so the propagation delay through the part is effectively zero for the clock tree. A bypass mode lets you feed the input straight through to the outputs, useful for system debug or when you want to bypass the PLL during low-frequency test. Runs on a 3V to 3.6V supply — 3.3V nominal — and handles clock rates up to 133MHz. That covers most common processor, FPGA, and memory bus clocks in the commercial space. No differential inputs or outputs here; it's single-ended LVTTL/CMOS all the way, so keep your trace lengths short and your termination clean.
Temperature grade — where it fits and where it doesn't
Rated 0°C to 70°C, commercial grade. That puts it in office equipment, consumer electronics, networking gear in conditioned spaces, and test equipment that lives indoors. Not for the motor drive cabinet, not for the engine bay, not for the rooftop radio enclosure. If your BOM calls for industrial temperature, this isn't the part — look at the industrial-grade variant in the same family.
Sourcing and lifecycle — active, no LTB pressure
The 23S05-1DCG is listed as Active in production — no last-time-buy notice, no end-of-life announcement. ROHS3 compliant, so no regulatory sunset on the horizon. Available through independent distribution; we source and quote to order against an RFQ.