What the W40S11-23G is and where it fits
The W40S11-23G is a low skew clock driver designed specifically for SDRAM DIMM clock distribution. It accepts a single-ended clock input and fans it out to 13 outputs with minimal skew between channels, maintaining timing margins across the memory bus. The part operates from a 3.135 V to 3.465 V supply and is rated for 133 MHz maximum frequency. It comes in a 28-SOIC surface-mount package with 0.295-inch body width and 7.50 mm lead pitch.
133 MHz and 2:13 fanout — what they mean for the BOM
The 133 MHz maximum frequency is the clock rate the driver can cleanly propagate; it is not a synthesised output but a buffered version of the input.
Temperature grade and environment
Rated for 0°C to 70°C ambient, this part is intended for commercial indoor equipment — desktop PCs, servers, and telecom line cards where the chassis temperature stays within that band.
Lifecycle and sourcing posture
It is RoHS non-compliant per the manufacturer's declaration, so designs requiring RoHS conformance must verify the exemption or select a compliant variant.