SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A are octal buffers and line drivers with 3-state outputs manufactured by Texas Instruments.
The SN54ALS244C, SN54AS244A, SN74ALS244C and SN74AS244A are octal buffers and line drivers with three‑state outputs. They are intended for use as memory address drivers, clock drivers, and bus‑oriented receivers and transmitters.
The document lists recommended operating conditions, absolute‑maximum ratings, electrical characteristics, switching performance, and a comprehensive package‑option addendum that details available DIP, SOIC, and other package types. It also includes a notice on product status and warranty information.
| High‑level input voltage (VIH) | 2 V |
|---|---|
| Low‑level input voltage (VIL) | 0.8 V |
| High‑level output current (IOH) | -12 mA to -15 mA |
| Low‑level output current (IOL) | 48 mA to 64 mA |
High‑level output current is limited to –12 mA to –15 mA, while low‑level output current can be up to 48 mA (or 64 mA for the AS version).