ET74LCX244

ET74LCX244 is an octal buffer/line driver with 3-state outputs in the 74LCX family (low‑voltage CMOS). It’s a unidirectional, non‑inverting device that transfers 8 input bits (A0–A7) to 8 outputs (Y0–Y7) when enabled.
Key points
- Architecture: two 4-bit buffer blocks with separate output-enable pins.
- Enable: two enables (often labeled 1OE and 2OE or /OE1 and /OE2). Outputs go high‑impedance when the corresponding enable is inactive.
- Purpose: buffer or fan-out driver to drive multiple loads or isolate buses between devices.
- Electrical: LCX variant, typically operates from a low voltage supply (check exact part: commonly ~2.0–3.6V or 2.3–3.6V depending on spec). CMOS input/output levels; non-inverting.
- Package: usually 20-pin DIP or SOIC.
- Applications: microcontroller bus interfacing, level shifting in mixed-voltage systems, where you need extra drive without loading the source.
Note: “ET” is a vendor/variant prefix. Always consult the specific ET74LCX244 datasheet for exact Vcc range, propagation delay, input/output drive, and recommended operating conditions.

Here are typical features of the ET74LCX244 (octal buffer/line driver with 3-state outputs):
- Octal buffer/line driver with 3-state outputs
- Two 4-bit sections (A1–A4 and A5–A8) with separate enables
- Non-inverting buffers
- Active-low output enables (OE1 and OE2) to place outputs in Hi-Z
- Suitable for bus driving and easy isolation of devices
- CMOS low-power design
- TTL-compatible input thresholds
- Wide single-supply operation (check datasheet for exact Vcc range)
- Available in standard packages (e.g., DIP-20, SOIC-20)
Note: Confirm exact voltage range, timing, and package options from the specific datasheet for your ET74LCX244 variant.

Standard 20-pin packages: DIP-20 and SOIC-20 (also available in TSSOP-20 by some manufacturers).

- Pin count: 20 pins (in typical packages like DIP-20/SO-20; Vcc on the Vcc pin, GND on GND pin).
- Function: Octal buffer/line driver with 3‑state outputs. It buffers eight data inputs (A0–A7) to eight outputs (Y0–Y7) with two 4‑bit groups controlled by two active‑low enables (1OE and 2OE). Non‑inverting, used to drive/buffer data lines with tri‑state capability.

Manufacturer: Etron Technology, Inc. (Taiwan).
What kind of company: A Taiwanese semiconductor company that designs and markets integrated circuits (primarily memory and logic) as a fabless designer.

ET74LCX244 is an octal buffer/line driver with two 4-bit enables and tri-state outputs.
Typical applications:
- Buffer data/address lines between a microprocessor and memory/I/O devices to reduce fan-out and improve signal integrity.
- Bus isolation and tri-state gating for testing, power-down, or hot-swapping.
- Level shifting in mixed-voltage systems within the LCX supply range.
- Drive multiple inputs from a single source while preserving timing and drive capability.

Equivalent products: any octal buffer/line driver with 3-state outputs (244 family). Common substitutes include:
- SN74LCX244A (TI)
- SN74LVC244A
- 74LVC244 (Nexperia/ON Semi)
- 74HC244
- 74HCT244
- 74LS244
- 74AHC244
- 74ACT244
Note: verify OE polarity, Vcc range, and pinout, as these vary between families.