PCIe clock buffers offers 'lowest' jitter

Texas Instruments has introduced a pair of four and eight output current steering logic clock fanout buffers that support PCI Express Gen-1, Gen-2, Gen-3 interface standards.

The LMK00334 creates four buffered copies of an input clock, while the LMK00338 produces eight buffered copies. They are claimed to deliver 70% lower additive jitter (30fs at 100MHz) and significantly higher supply noise rejection (-75dBc at100MHz) compared to competitive devices. Both devices are supported in TI's new WEBENCH Clock Architect to help simplify clock tree design for high speed communications, networking, and data centre systems, including servers, switches and routers.