Gates in an old MOS chip

May 12, 2006 1 Replies
F

Hello,



I have schematics of an MOS chip from early 80's. There are three things in the logic gates reference (see

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which I don't understand:


  1. What do the numbers mean (e.g. 19/6 and 7/35 for the C gate) ?


  1. What is the symbol that looks like an inverter with an additional wire near the circle (gates S, J, V, Y, K, N, O, P) ?

  2. How do "input couplers" work?

Thanks in advance, Piotr



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J

Standard notation is W/L, each in microns. Your drawing must be old high voltage stuff.

Don't know, never seen that symbology before. Maybe tri-state ??

Don't know what that means either.

...Jim Thompson

| James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
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