54LS125ALMQB, LS Series TTL Bus Driver, Bulk package, Active lifecycle.
| Parameter | Value |
|---|---|
| Series | * |
| Package | Bulk |
The 54LS125ALMQB is a bus driver from the LS series of TTL logic, designed for buffering and driving bus lines in digital systems. It is a common building block in legacy industrial control, telecom backplanes, and military/aerospace equipment where 5 V TTL logic is still in service.
For reflow assembly, ensure the parts are baked per MSL requirements if the moisture-barrier bag has been compromised.
The 54LS125ALMQB is the military-temperature-range version of the 74LS125. The 54 prefix indicates a wider operating temperature range (-55°C to +125°C) and typically tighter process controls. Functionally, both are quad bus drivers with three-state outputs, but the 54LS125ALMQB is intended for high-reliability and extreme-environment applications.