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3-Line-to-8-Line Decoders / Demultiplexers 

The HD74LS138 decodes one-of-eight line dependent on the conditions at the three binaly select inputs and the three enable inputs. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications. 

Manufacturer: Renesas

Manufacturer Part No: HD74LS138P

Package / Case: PDIP-16