SN74AC139-Q1 Dual 2-to-4 Line Decoder/Multiplexer

Texas Instruments SN74AC139-Q1 Dual 2-to-4 Line Decoder/Multiplexer contains dual two-to-four decoders with one active low-output strobe (G). When the outputs of one channel are gated by the strobe input (G = HIGH), the Texas Instruments SN74AC139-Q1 are all forced into the high state. When the strobe input does not disable the outputs (G = LOW), only the selected output is low, while all others are high.