54ACTQQ

The 54ACTQQ is one member of the 54ACTQ series.The ACTO utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance.FACT Quiet Series features GTO output control and undershoot corrector in addition to a split ground bus for superior performance.The setup of a noise characteristics measurement is critical to the accuracy and repeatability of the tests. The following is a brief description of the setup used to measure the noise characteristics of FACT.

Features of the 54ACTQQ are:(1)guaranteed simultaneous switching noise level and dynamic threshold performance; (2)guaranteed pin-to-pin skew AC performance; (3)improved latch-up immunity; (4)trI-STATE outputs drive bus lines or buffer memory address registers; (5)outputs source/sink 24 mA; (6)4 kV minimum ESD immunity.

The absolute maximum ratings of the 54ACTQQ can be summarized as:(1)supply voltage:-0.5V to 7V;(2)DC input voltage:-0.5V to Vdd+0.5V;(3)storage temperature:-65 to 150;(4)junction temperature:175;(5)DC latch-up source or sink current:±300mA.Deskew the word generator so that no two channels have greater than 150 ps skew between them. This requires that the oscilloscope be deskewed first. Swap out the channels that have more than 150 ps of skew until all channels being used are within 150 ps. It is important to deskew the word generator channels before testing. This wi11 ensure that the outputs switch simultaneously.Determine the quiet output pin that demonstrates the greatest noise levels. The worst case pin wjll usually be the furthest from the ground pin. Monitor the output voltages of 54ACTQQ using a 50t2 coaxial cable plugged into a standard SMB type connector on the test fixture. Do not use an active FET probe.

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