74AVC4T3144GU12X

74AVC4T3144GU12X is a 4‑bit dual‑supply, level‑shifting buffer/transceiver from TI’s 74AVC4T3144 family. It buffers data between two voltage domains (VCCA and VCCB) and translates logic levels from one side to the other, with 3‑state outputs. The device provides bidirectional data transfer across the two supplies and is controlled by an output‑enable (OE) and a direction/control input (DIR) so the four data lines can be disabled or routed as needed. It supports Ioff/partial‑power‑down for safe hot‑swap operation and is designed for high‑speed CMOS logic.
Key points:
- 4 independent I/O lines with level translation between VCCA and VCCB
- 3‑state outputs (via OE)
- Dual supplies (VCCA, VCCB) for interfacing different logic levels
- DIR control for direction and TI packaging variant GU12X
Common uses: interfacing MCUs/FPGA memories or sensors across voltage domains, bidirectional bus translation, and bus isolation. Refer to the TI datasheet for exact electrical specs and packaging details.

Equivalent products are other 4-bit bidirectional bus transceivers with 3-state outputs (the 4T family). Common cross‑refs include:
- TI: SN74AVC4T324
- Nexperia: 74AVC4T324
- ON Semiconductor: NC4T324
Note: exact package, voltage, and timing must match; verify with distributor cross-reference tools (Digi‑Key, Mouser, etc.).

- Pin count: 20 pins (in typical GU12X/SSOP-20 style package).
- Function: 4-bit bidirectional voltage-level translator/buffer. It translates between two supply rails (VCCA and VCCB) for four I/O pairs (A1–A4 and B1–B4) with an output-enable (OE) for 3-state outputs.

- Manufacturer: Nexperia.
- What kind of company: A global semiconductor company that designs and manufactures discrete components, logic ICs, and MOSFETs (originating from Philips/NXP’s discrete business).

74AVC4T3144GU12X is a 4‑bit bidirectional level translator with two supply domains. Typical applications:
- Level shifting between different voltage rails (e.g., 1.8–3.3V or 3.3–5V)
- Bidirectional buffering of data/address/control lines for MCUs, FPGAs, and ASICs
- Interface between hosts and memories, sensors, displays, or peripherals with different I/O voltages
- High‑speed bus interfacing and signal translation in embedded/consumer electronics
- Simple I/O expansion with voltage-domain isolation in portable devices
Note: verify exact VCCA/VCCB ranges and propagation specs from the datasheet.

Package type: VSSOP-20 (20-pin) RoHS-compliant variant, suffix GU. Check TI’s product page for exact dimensions.