8-bit bus transceiver in 20-SSOP
The 74HCT245DB,112 is an octal (8-bit) bus transceiver from the 74HCT family, with non-inverting logic and 3-state outputs. It handles bidirectional data flow between two buses, controlled by a direction pin and an output enable. Supply voltage range is 4.5 V to 5.5 V, making it a direct fit for 5 V TTL/CMOS logic systems. Operating temperature spans -40°C to 125°C, covering industrial and automotive under-hood environments. Output drive capability is 6 mA source and 6 mA sink per channel — sufficient for driving standard logic inputs or low-power LEDs, but not high-current loads.
SSOP package rework and layout
Pin 1 is clearly marked by a chamfer and dot on the package top — no ambiguity under a microscope. The 3-state output structure means floating bus lines during rework won't fight each other if the enable pin is pulled high.
Active production and sourcing
ROHS3 compliant, no exemptions that would trigger a last-time-buy. Supplied in Tube packaging (the,112 suffix indicates tube). If your pick-and-place line prefers tape and reel, confirm the reeled variant (74HCT245DB,118) before committing the BOM.