ECG729

ECG729: Dual 2-Line to 4-Line Decoder / Demultiplexer packing two completely separate 2-line to 4-line digital decoders into a single 16-pin footprint package layout. It functions by evaluating a 2-bit binary input coordinate and pulling the single targeted output pin down to ground while leaving the other three inactive paths high, globally standard for mapping sectioned memory blocks across 8-bit computers. (Industry Exact Equals: Philips ECG729, NTE729, Texas Instruments SN74HC139N, NXP 74HC139N, Toshiba TC74HC139AP, onsemi MC74HC139AN).