MC100LE310
Overview
- Dual Differential Fanout Buffers 200ps Part-to-Part Skew 50ps Output-to-Output Skew Low Voltage ECL/PECL Compatible 28-lead PLCC Packaging For applications which require a single-ended input, the VBB reference voltage is supplied. For single-ended input applications the VBB reference should be connected to the CLK input and bypassed to ground FN SUFFIX via a 0.01µf capacitor. The input signal is then driven into the CLK input. PLASTIC PACKAGE To ensure that the tight skew specification is met it is necessary that CASE 776-02 both sides of the differential output are terminated into 50Ω, even if only one side is being used. In most applications all nine differential pairs will be used and therefore terminated. In the case where fewer than nine pairs are used it is necessary to terminate at least the output pairs adjacent to the output pair being used in order to maintain minimum skew. Failure to follow this guideline will result in small degradations of propagation delay (on the order of 10-20ps) of the outputs being used, while not catastrophic to most designs this will result in an increase in skew. Note that the package corners isolate outputs from one another such that the guideline expressed above hold
