The NB2305A is a versatile, 3.3 V zero delay buffer designed to distribute highâspeed clocks. It accepts one reference input and drives out five lowâskew clocks. It is available in a 8 pin package.
The â1H version of the NB2305A operates at up to 133 MHz, and has higher drive than the â1 devices. All parts have onâchip PLLâs that lock to an input clock on the REF pin. The PLL feedback is onâchip and is obtained from the CLKOUT pad.
Multiple NB2305A devices can accept the same input clock and distribute it. In this case the skew between the outputs of the two devices is guaranteed to be less than 700 ps.
All outputs have less than 200 ps of cycleâtoâcycle jitter. The input and output propagation delay is guaranteed to be less than 350 ps, and the output to output skew is guaranteed to be less than 250 ps.
The NB2305A is available in two different configurations, as shown in the ordering information table. The NB2305A1 is the base part. The NB2305Ax1H* is the high drive version of the â1 and its rise and fall times are much faster than â1 part.
Features
⢠15 MHz to 133 MHz Operating Range, Compatible with CPU and PCI Bus Frequencies
⢠Zero Input â Output Propagation Delay
⢠Multiple LowâSkew Outputs
⢠OutputâOutput Skew Less than 250 ps
⢠DeviceâDevice Skew Less than 700 ps
⢠One Input Drives 5 Outputs
⢠Less than 200 ps CycleâtoâCycle Jitter is Compatible with Pentium® Based Systems
⢠Available in 8 Pin, 150 mil SOIC Package and 8 Pin TSSOP 4.4 mm
⢠3.3 V Operation, Advanced 0.35 μ CMOS Technology
⢠These are PbâFree Devices
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