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Texas Instruments 54LS32FMQB — Logic ICs

54LS32FMQB OR Gate, LS Series TTL, Active

MPN54LS32FMQB
End of Life

54LS32FMQB, LS Series TTL, OR Gate, Active Lifecycle, Bulk Package.

$0.94Ref. price · indicative, final on quote
Texas Instruments 54LS32FMQB datasheet (PDF)
RoHSNot applicable
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

54LS32FMQB specifications
ParameterValue
Series*
PackageBulk

Product details

This is a key advantage for BOM stability in long-lifecycle programs like military or industrial controls where requalification is costly. No LTB risk here, and no need to hunt for a replacement yet.

What the Bulk package means for your bench

For the rework lab or small-run production, that's convenient — no feeder setup, no tape-splicing. Just pop it into a DIP socket or wave-solder it. If you're used to 74LS series parts in SOIC or TSSOP, note the 54LS32FMQB comes in a hermetic ceramic DIP, which is standard for military-grade TTL.

Frequently asked questions

54LS32FMQB vs 74LS32 difference?

The 54LS32FMQB is the military-temperature-grade version of the 74LS32. The 54 prefix indicates a wider operating temperature range (-55°C to +125°C) and typically a hermetic ceramic package, while the 74LS32 is specified for 0°C to 70°C in a plastic package. Functionally, both are quad 2-input OR gates with the same LS TTL logic levels and pinout, but the 54LS32FMQB is intended for high-reliability and extreme-environment applications.