74HCT670N

4 x 4 Register File with 3-State Outputs and TTL-Compatible Inputs manufactured by various semiconductor companies (such as Philips, NXP, or Texas Instruments). This high-speed CMOS digital memory logic chip houses 16 storage bits organized structurally into four distinct registers of 4 bits each inside a 16-pin package layout framework. It functions by utilizing completely independent read and write address selection ports, allowing a host microprocessor to write data into one register address while simultaneously reading data out of a completely different memory register without data collisions. It saw extensive architectural rollout as a high-speed data pipeline buffer, small FIFO memory stack, arithmetic logic unit (ALU) look-ahead register, and scratchpad accumulator block in vintage personal computers and industrial processors. (Industry Equals: Texas Instruments SN74HCT670N, NXP 74HCT670N, Philips 74HCT670N, Signetics 74HCT670N, Fairchild MM74HCT670N, Rochester Electronics SN74HCT670N).