ON Semiconductor has released three ECLinPS MAX devices - the first members of a new family of emitter coupled logic (ECL) devices targeted at OC-48 grade applications such as routers, switches, and 3 G base-stations where jitter management is a particularly critical issue in overall system performance. These devices offer 200 femtoseconds (fs) typical jitter performance and are targeted specifically at clock distribution functions, a major source of signal distortion in these types of high speed communications systems.
The ECLinPS MAX family offer a highly flexible means to route clock and data signals through ultra precise system designs and across backplanes, functioning as translators, receiver/drivers and clock distribution products. Good jitter performance allows designers to: increase the depth of their clock trees while staying well within jitter budgets; minimise the possibility of incorrect data latching; increase likelihood of maintaining lock on clock sources; improve the speed of obtaining lock after a field board swap.
The NB6L11 1:2 differential fan-out buffer is for applications requiring very fast AC performance. It features 160 ps propagation delay (typ) and supports input clock frequencies greater than 6 GHz and maximum input data rates of greater than 6 Gbps (typ). Typical RMS jitter for this device is 200 fs.
The NB6L16 1:1 differential fan-out buffer offers similar input clock and data range specs and has an input propagation delay spec of 135 ps. With output transition times of 70 ps it is ideally suited for interfacing with high-frequency and low voltage (2,5 V) sources. Typical RMS jitter for this device is 200 fs.
The NB6L239 differential clock divider is an advanced clock distribution IC with dual divider outputs, allowing for two separate clock signals to be distributed from a single reference input. The first division bank offers divide by 1, 2, 4, and 8 ratios while the second provides divide by 2, 4, 8, and 16 ratios. This allows an external 622 MHz reference to be used to generate 38,8 to 622 MHz outputs.
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