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MC10E111 Scheda tecnica(PDF) 1 Page - ON Semiconductor |
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MC10E111 Scheda tecnica(HTML) 1 Page - ON Semiconductor |
1 / 5 page MOTOROLA SEMICONDUCTOR TECHNICAL DATA 2–1 REV 3 © Motorola, Inc. 1996 5/95 1:9 Differential Clock Driver The MC10E/100E111 is a low skew 1-to-9 differential driver, designed with clock distribution in mind. It accepts one signal input, which can be either differential or else single-ended if the VBB output is used. The signal is fanned out to 9 identical differential outputs. An enable input is also provided. A HIGH disables the device by forcing all Q outputs LOW and all Q outputs HIGH. • Low Skew • Guarateed Skew Spec • Differential Design • VBB Output • Enable • Extended 100E VEE Range of –4.2 to –5.46V • 75kΩ Input Pulldown Resistors The device is specifically designed, modeled and produced with low skew as the key goal. Optimal design and layout serve to minimize gate to gate skew within-device, and empirical modeling is used to determine process control limits that ensure consistent tpd distributions from lot to lot. The net result is a dependable, guaranteed low skew device. To ensure that the tight skew specification is met it is necessary that both sides of the differential output are terminated into 50 Ω, 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 on the same package side (i.e. sharing the same VCCO) as the pair(s) being used on that side, in order to maintain minimum skew. Failure to do this will result in small degradations of propagation delay (on the order of 10–20ps) of the output(s) being used which, while not being catastrophic to most designs, will mean a loss of skew margin. PIN NAMES Pin Function IN, IN EN Q0, Q0–Q8, Q8 VBB Differential Input Pair Enable Differential Outputs VBB Output 1 56 789 10 11 25 24 23 22 21 20 19 26 27 28 2 3 4 18 17 16 15 14 13 12 VEE EN IN VCC IN VBB NC Q3 Q3 Q4 VCCO Q4 Q5 Q5 Pinout: 28-Lead PLCC (Top View) Q0 Q0 Q1 VCCO Q1 Q2 Q2 Q8 Q7 Q6 Q8 VCCO Q7 Q6 MC10E111 MC100E111 1:9 DIFFERENTIAL CLOCK DRIVER FN SUFFIX PLASTIC PACKAGE CASE 776-02 IN IN LOGIC SYMBOL Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 Q4 Q4 Q5 Q5 Q6 Q6 Q7 Q7 Q8 Q8 EN VBB |
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