Active 5 V bus transceiver — BOM-fit for 74FCT543ATQG
It packs one 8-bit element with non-inverting 3-state outputs, sourcing 15 mA and sinking 64 mA per channel — the asymmetric drive suits heavily loaded backplane or memory-bus lines where the capacitive return path demands more sink current.
Package and footprint — 24-QSOP vs 24-SSOP
The supplier device package is 24-QSOP (EIAJ standard), while the package/case is also listed as 24-SSOP with a 0.154-inch body width and 3.90 mm width — these are the same physical footprint; QSOP is the tighter-pitch variant of the SSOP family, so the PCB land pattern is interchangeable for this order code. Surface-mount assembly with tube delivery — the tube quantity is the standard 24-QSOP tube count; no reel or tape option is listed for this ordering code, so hand-place or low-volume lines are the natural fit.