MC74HC374AN

Octal D-Type Edge-Triggered Flip-Flop with 3-State Outputs manufactured by Motorola (onsemi). This high-speed silicon-gate CMOS logic chip packages eight independent memory flip-flops sharing a single master clock input and an active-low Output Enable control pin inside a 20-pin dual-in-line housing. It functions by capturing the exact binary logic states present on its eight distinct input lines on the positive-going transition of the clock pulse, holding that data securely while allowing 3-state output buffer drivers to cleanly isolate the chip from a shared processing bus when disabled. It was universally deployed as an 8-bit bus latch, a data storage buffer register, or an address accumulator across vintage x86 personal computer motherboards, custom instrumentation interfaces, and legacy arcade hardware architectures. (Industry Equals: Motorola MC74HC374AN, Texas Instruments SN74HC374N, NXP 74HC374N, Toshiba TC74HC374AP, STMicroelectronics M74HC374B1R, Fairchild MM74HC374N).