Active production, 1.65-3.6V octal buffer
The SN74LVC2244APW: The 12mA source and sink capability per output is enough to drive a standard CMOS load or a short trace on a mixed-voltage backplane, but not a 50-ohm terminated line — that would need a higher-drive part like the 74ABT family.
Two-element, 4-bit per element organization
Internally, the device has two independent buffer elements, each handling four bits. This 2 × 4 arrangement is useful for splitting a byte-wide bus into two separate enable domains — for example, gating the upper and lower nibble of a data port independently. The 3-state output control lets each element be placed in high-impedance, so multiple buffers can share a bus without contention. The non-inverting path means the output polarity matches the input — no logic inversion to account for in the firmware.
20-TSSOP package and board integration
The 0.65 mm pitch is routable on a two-layer board with 6/6 mil trace/space rules. For 125°C ambient, the automotive-grade 74LVC parts (AEC-Q100) are the correct choice.