SN54S244J

The Texas Instruments SN54S244J is a military-grade octal buffer/line driver from the SN54S244 family, featuring non-inverting 3-state outputs in a ceramic dual-in-line package (CDIP). Built on Schottky TTL technology, it delivers high-speed signal buffering with typical propagation delays in the 4.5 ns to 7 ns range and outputs that sink up to 64 mA per channel, enabling robust drive of terminated buses and heavily loaded backplanes. The 3-state outputs place channels in a high-impedance state, supporting bidirectional data flow and bus-organized architectures where multiple drivers share common lines.

This device is engineered for mission-critical military, aerospace, and high-reliability industrial applications such as avionics bus interfaces, radar data paths, guidance system memory drivers, and secure communications buffering. Its ceramic DIP package and military temperature range (-55°C to +125°C) provide the ruggedness required for harsh environments. The 54-series prefix indicates compliance with MIL-PRF-38535 processing and testing standards. As a mature Schottky TTL logic family member, the SN54S244J presents lifecycle management considerations; designers should assess the risk of obsolescence and evaluate pin-compatible alternatives, including up-screened industrial-grade equivalents or more modern radiation-hardened CMOS buffers, to ensure long-term supply continuity in sustaining programs.