NB4N121KMNG - 

The NB4N121K is a Clock differential input fanout distribution 1 to 21 HCSL level differential outputs, optimized for ultra low propagation delay variation. The NB4N121K is designed with HCSL clock distribution for FBDIMM applications in mind. Inputs can accept differential LVPECL, CML, or LVDS levels. Single-ended LVPECL, CML, LVCMOS or LVTTL levels are accepted with the proper VREFAC supply. Clock input pins incorporate an internal 50 Ω on die termination resistors. Output drive current at IREF for 1X load is selected by connecting to GND. To drive a 2X load, connect IREF to VCC. The NB4N121K specifically guarantees low output–to–output skews. Optimal design, layout, and processing minimize skew within a device and from device to device. System designers can take advantage of the NB4N121K's performance to distribute low skew clocks across the backplane or the motherboard.

Features:

Typical Input Clock Frequency 100, 133, 166, 200, 266, 333 and 400 MHz

340 ps Typical Rise and Fall Times

800 ps Typical Propagation Delay

tpd 100 ps Maximum Propagation Delay Variation Per Each Differential Pair

Additive Phase RMS Jitter: 1 ps Max

Operating Range: VCC = 3.0 V to 3.6 V with VEE = 0 V

Differential HCSL Output Level (700 mV Peak-to-Peak)

Pb-Free Packages are Available