lecture07 - b Nothing means open circuit (i.e. high...

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CMPT 150 Tri-state Gates Page 1 4-Variable K-map Example A B C D F 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 1 0 1 0 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1 x 1 0 1 1 x 0 x 1 0 x CMPT 150 Tri-state Gates Page 2 Tri-State Gates b So far every gate has been bi-state, i.e. output is 0 or 1 b A tri-state gate has three “values” b Output is zero, one, or nothing
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Unformatted text preview: b Nothing means open circuit (i.e. high impedance) b Tri-state buffer b One data input and one control input b If C=1 then output = b If C=0 then output = CMPT 150 Tri-state Gates Page 3 Tri-State Gates b Multiple tri-state gate outputs can be connected to each other b...
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This note was uploaded on 04/27/2011 for the course CMPT 150 taught by Professor Dr.anthonydixon during the Spring '08 term at Simon Fraser.

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