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74LS140 - LSTTL Dual 4-input NAND
54LS140 - LSTTL Dual 4-input NAND
74LS240 - LSTTL eight-Buffer / Bus Driver
54LS240 - LSTTL eight-Buffer / Bus Driver
54S138 - STTL type 3-to-8 line decoder/demodulator
