74AVC4TD245GU,115

The 74AVC4TD245GU,115 (TI SN74AVC4TD245) is a 4‑bit bidirectional bus transceiver with 3‑state outputs. It lets data move between two parallel buses (A and B) with direction controlled by DIR and an enable input (OE) to place the ports in high‑impedance when off.
Key points:
- Four data lines that can transfer in either direction between two voltage domains.
- Separate supply rails for each side (VCCA and VCCB), enabling level shifting and isolation between domains.
- Direction control (DIR) and output enable (OE#) for flexible bus sharing on multi‑device systems.
- 3‑state outputs allow wiring multiple devices to a common bus; includes features typical of AV C family such as fast CMOS performance and low power.
- Package GU option; “115” typically indicates a temperature/grade variant (industrial/extended temperature range), but verify the exact spec in the datasheet.
Common uses: interfacing microcontrollers or hosts with peripherals operating at different voltages, level shifting on bidirectional I/O buses, and bus isolation on shared systems.
Note: For exact voltage ranges (VCCA/VCCB), current limits, and propagation delays, consult the TI datasheet for SN74AVC4TD245GU,115.

Here are concise features of 74AVC4TD245GU,115:
- 4-bit bidirectional bus transceiver (A ↔ B) with tri-state outputs
- Dual-supply operation: separate VCCA and VCCB for level shifting between two logic families
- Direction control via DIR; data flow can be A→B or B→A
- Output enable (OE) to place outputs in high impedance
- 4 data I/O lines with bus-hold on inputs to help without external pull-ups
- Low-power CMOS operation with high drive capability
- ESD protection on all data pins
- Industrial temperature range (typical: -40°C to 125°C)
- Pb-free/ RoHS-compliant packaging; GU package option
- Suitable for voltage-level translation and buffering between different logic levels
Note: VCCA/VCCB voltage ranges are per device datasheet (dual-supply level shifting between the A and B sides).

VSSOP-20 (20-pin Very Small Outline Package).

- Pin count: 20 pins (GU package).
- Function: 4‑bit bidirectional bus transceiver with tri‑state outputs. It passes data between A0–A3 and B0–B3 in either direction controlled by DIR, with /OE to enable/disable both directions.

- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: A US-based multinational semiconductor company that designs, manufactures, and sells analog and digital integrated circuits and related electronic components worldwide.

- 4-bit bidirectional bus transceiver for level translation between voltage domains (e.g., 3.3V ↔ 5V).
- Microcontroller/FPGA peripheral interfaces and I/O expansion.
- Buffering and isolation for data/address buses in memory and I/O interconnects.
- Backplane/system bus buffering in consumer, automotive, and industrial equipment.
- General-purpose, tri-state buffer/driver for routing data paths in mixed-supply designs.

Common cross-references for TI SN74AVC4TD245GU,115 (4-bit bidirectional transceiver with 3-state outputs) include:
- TI: SN74AVC4T245 / SN74AVC4TD245
- Nexperia/NXP/Philips: 74AVC4T245 (and 74AVC4TD245 variants)
These are drop-in equivalents in the same 14-pin package family. For exact pinout/package compatibility, verify the specific variant and suffix.