8-bit bus transceiver for 3.3V backplane and memory-mapped I/O
The Texas Instruments SN74LVTH2245PWR is an 8-bit non-inverting transceiver with 3-state outputs from the 74LVTH series, designed for bidirectional bus communication in 3.3V systems. It operates from a 2.7V to 3.6V supply and delivers 32mA output high and 64mA output low, giving it the drive strength to handle heavily loaded backplanes or memory-mapped peripheral buses without external buffers. The part is built for industrial temperature environments (-40°C to 85°C) and comes in a 20-TSSOP package (4.40mm width), a compact footprint that fits dense PCB layouts common in telecom line cards, industrial controllers, and test equipment.
The 2.7V to 3.6V supply range means this transceiver works directly with 3.3V logic and can tolerate 2.5V rails in mixed-voltage designs without a separate level translator. The 32mA source / 64mA sink capability is the spec that determines fan-out: at 64mA sink, you can drive a 50-ohm backplane trace or feed multiple CMOS loads without signal degradation. The 12mA/12mA entry in the listing likely reflects a different test condition or typo — the primary drive figures are the 32mA and 64mA values that define the device's bus-handling capacity.