SN74AVC16T245DGG

The SN74AVC16T245DGG is a 16‑bit, dual‑supply, bidirectional bus transceiver with 3‑state outputs. It acts as a level translator between two voltage domains, with separate supplies VCCA and VCCB, enabling data transfer in either direction.
Key controls:
- DIR selects the data flow direction (A→B or B→A).
- OE (output enable) tri-states both sides when asserted.
Features:
- 16 data lines that can bridge two logic families, suitable for interfacing across different voltage levels.
- CMOS/TTL-compatible input thresholds with fast, low‑power operation.
- Protected inputs and robust ESD performance.
Package:
- DGG is TI’s package code for this device (compact option).
Typical applications:
- Connecting devices on different voltage rails (MCUs, memories, sensors).
- Level shifting and buffering for data/address buses.
- Interface between logic families in mixed‑voltage systems.
In short, it’s a compact, flexible bridge for bidirectional data between two voltage domains, controlled via DIR and OE, in a 16‑bit format.

Direct equivalents: NXP/Nexperia 74AVC16T245 (same function, different packaging). If a direct cross isn’t available, you can substitute with two 74AVC8T245 devices (8-bit bus transceivers) to achieve a 16-bit transceiver with the same A/B, DIR, and EN control signals.

Here are the key features of SN74AVC16T245DGG:
- 16-bit bidirectional bus transceiver (A ⇄ B) with direction control (DIR) and 3-state outputs (OE).
- Dual-supply, voltage-translating inputs/outputs: VCCA on A-side, VCCB on B-side for interfacing different voltage domains.
- Wide operating ranges: VCCA and VCCB typically from 1.65 V to 3.6 V.
- Ioff supports partial-power-down: no back-powering through I/O when a side is powered down.
- OE enables/disables the I/O on both sides (high-impedance when disabled).
- Suitable for level shifting and buffering between voltage domains without extra components.
- Low-power CMOS operation.
- ESD protection and robust I/O characteristics; rugged for system interfaces.
- Package: DGG (as used in this device) with a -40°C to 85°C operating range.
Note: Voltage ranges and exact timings depend on variant and conditions; consult the datasheet for precise specs.

Pin count: 20 pins (DGG package, VSSOP-20).
Function: 16‑bit dual‑supply bidirectional bus transceiver with 3‑state outputs. Translates data between two voltage domains (A side and B side) and is controlled by DIR and OE, suitable for level shifting between two voltage rails (VCCA and VCCB).

- Manufacturer: Texas Instruments (TI)
- What kind of company: TI is an American multinational technology company that designs and manufactures semiconductors and integrated circuits, specializing in analog, mixed-signal, and embedded processing products. It is one of the world’s largest semiconductor manufacturers, headquartered in Dallas, Texas.

SN74AVC16T245DGG is a 16‑bit bidirectional bus transceiver with tri‑state outputs and separate DIR/enable control. Common applications:
- Expand and buffer host MCU/MPU data/address buses to peripherals, memory, PLDs/FPGA.
- Interface between different voltage domains (level shifting and isolation in mixed‑voltage systems).
- Bus isolation in multi‑board/backplane systems and during debugging or hot‑swap scenarios.
- Improve signal integrity on high‑speed data paths by buffering and reducing loading and reflections.
- Used in development/test benches and emulation setups where controllable, tri‑state bus transceivers are needed.

The SN74AVC16T245DGG is available in a 20‑pin VSSOP (Very Small Outline Package) package.