8-bit bus transceiver for 5 V backplane and memory-mapped I/O
The single-element, 8-bit wide bus interface is a direct fit for 5 V backplane transceivers, memory-mapped peripheral buses, and bidirectional data paths in industrial control or telecom line cards.
If your board runs a 3.3 V core with a 5 V I/O bank, the SN74ABT2245PW lives on the 5 V side — it is not a level translator. The asymmetric output drive (32 mA source, 64 mA sink) is typical of ABT logic; the higher sink current handles the capacitive load of a long backplane trace or a heavily loaded data bus. The 3-state outputs let multiple transceivers share the same bus lines without contention, controlled by the output-enable pin.
Package and temperature grade — board-fit details
Housed in a 20-TSSOP (4.40 mm width) surface-mount package, the SN74ABT2245PW is a compact footprint for dense boards — the 0.65 mm pin pitch demands careful layout but saves real estate versus a 20-SOIC. The part is ROHS3 compliant.
For a 5 V logic part in 2025, that is a solid sourcing signal: TI is not sunsetting this family yet.