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16 lines
397 B
16 lines
397 B
ADDER - 4 BIT BINARY ADDER USING E-SOURCE AND GATES
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* behavioral gate description
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*** SUBCIRCUIT DEFINITION
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.SUBCKT 74HC00 in1 in2 out NVCC NVGND vcc1={vcc} tripdt1={tripdt}
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.param Rout={60*4.0/(vcc1-0.5)} ; standard output driver
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E1 out20 0 nand(2) in1 0 in2 0 ({vcc / 3}, 0) ({2 * vcc / 3}, {vcc})
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Rout out20 out {Rout}
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.ends
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.param vcc=3 tripdt=6n
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.include ../adder_common.inc
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.END
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