SN74LVC244ARWPR

SN74LVC244ARWPR is an octal buffer/driver from TI’s 74LVC family. It provides eight non‑inverting data paths (A1–A8 to Y1–Y8) with two independent, active‑low Output Enable (OE1 and OE2) controls. When OE is low, data passes through; when OE is high, all outputs go high‑impedance. It operates from VCC in the 1.65–3.6 V range, making it suitable for buffering and isolating signals on a common bus (e.g., microcontrollers, processors, memory). Features commonly include low-power CMOS operation and Ioff for partial‑power‑down operation. Typical uses: bus buffering, level‑shifting between subsystems, and protecting sensitive devices while sharing lines. The ARWPR suffix indicates a specific packaging option (often tape-and-reel). Pinout includes A1–A8, Y1–Y8, OE1, OE2, VCC, and GND.

Equivalent parts (8-bit buffer/line driver with 3-state outputs) from other vendors include:
- Nexperia (formerly NXP): 74LVC244A (APW/PW packages)
- On Semiconductor: MC74LVC244A
- STMicroelectronics: 74LVC244A
These are functionally the same device as TI SN74LVC244ARWPR.

Here are the key features of SN74LVC244ARWPR:
- 8-bit buffer/line driver (two independent 4-bit sections)
- Noninverting buffers with 3-state outputs
- Two separate active-low output-enable inputs (1OE and 2OE)
- Vcc range: 1.65 V to 3.6 V (suitable for 3.3 V/2.5 V systems)
- Outputs enter high-impedance state when enabled inputs are deasserted
- Fast CMOS operation for high-speed interfacing
- Low static/dynamic power consumption
- Wide operating temperature (typical -40°C to 125°C)
- ESD protection on inputs/outputs
- Packaging: Tape-and-reel (RWPR) in a 20-pin package (TSSOP-style)
Applications: buffering and level-shifting between different voltage domains, bus driving, and general purpose buffering in digital systems.

- Pin count: 20 pins.
- Function: SN74LVC244A is an octal buffer/line driver with 3-state outputs (two 4‑bit sections). It provides non-inverting buffering of inputs (A0–A7) to outputs (Y0–Y7) with two active‑low enables (1OE and 2OE) to tri-state the respective groups.

- Manufacturer: Texas Instruments (TI).
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits.

It’s a 20‑pin Plastic Small‑Outline Package (SOIC) in Tape & Reel format (RWPR suffix, RoHS compliant).