The SN74ALVCH16245DGG: It provides bidirectional data flow between two buses, with 3-state outputs that can be placed in a high-impedance state for bus isolation. The device operates from a 1.65V to 3.6V supply, making it compatible with both 1.8V and 3.3V logic rails, and delivers 24 mA of output drive per channel. It is housed in a 48-TFSOP (6.10 mm wide) or equivalently 48-TSSOP package for surface-mount assembly. Typical applications include memory-interface buffering, backplane transceivers, and bidirectional data buses in industrial control, telecom infrastructure, and general-purpose digital systems where mixed-voltage logic levels must be bridged.
Supply voltage range — 1.65V to 3.6V
The 1.65V to 3.6V supply span covers the two most common logic voltage families: 1.8V and 3.3V. A design engineer can drop this part into a 3.3V bus without a level translator, and the same device works in a 1.8V core-logic domain. For procurement, this wide range means the part is not pinned to a single rail — it reduces the risk of a last-minute voltage mismatch when the BOM is being qualified across multiple board variants.
Package and footprint — 48-TFSOP / 48-TSSOP
The 48-TFSOP (0.240", 6.10 mm width) and its supplier-device-package equivalent 48-TSSOP share the same 0.5 mm pitch footprint. For a rework technician, this is a fine-pitch TSSOP — hot-air rework at 300°C to 350°C with a small nozzle works, but a pre-heater under the board prevents tombstoning. The package is MSL 3 per the TI standard, so a bake-out at 125°C for 48 hours is needed if the moisture-barrier bag has been open longer than the floor-life window. The surface-mount profile matches standard lead-free reflow (260°C peak).
Drive level handles a standard TTL or CMOS load on a short backplane trace. For heavily loaded buses, 24 mA maintains VOH/VOL thresholds.
It suits factory-floor PLCs, outdoor telecom cabinets, and automotive cabin electronics (non-AEC-Q100). The 85°C ceiling means it is not intended for under-hood or engine-bay use, but it is fine for most indoor and sheltered outdoor equipment. Storage temperature exceeds the operating range — that limit governs handling, not running.
For dual-sourcing resilience, the SN74LVTH16245ADGVR is a functional alternative — same 16-bit transceiver function, 3-state outputs, and 48-TSSOP footprint — but note its supply minimum is 2.7V, so it does not cover 1.8V rails.