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Texas Instruments 54LS377FM — Logic ICs

54LS377FM D Flip-Flop, TTL, Active - Bulk Package

MPN54LS377FM
End of Life

54LS377FM, D FLIP-FLOP, TTL, Series *, Package Bulk, lifecycle_stage current, RoHS non-compliant.

$2.36Ref. price · indicative, final on quote
Texas Instruments 54LS377FM datasheet (PDF)
RoHSRoHS non-compliant
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

54LS377FM specifications
ParameterValue
Series*
PackageBulk

Product details

What this 54LS377FM is

The 54LS377FM is a D-type flip-flop in the 54LS TTL logic family, designed for general-purpose storage and register applications in military-temperature-range systems. It is — loose units, not tape-and-reel — which suits low-volume builds, prototyping, and rework benches where pick-and-place is not the primary assembly method.

Lifecycle and compliance reality

This part is RoHS non-compliant and contains lead (Pb).

Frequently asked questions

What is the pinout of 54LS377FM?

Design engineers need to verify fit with PCB layout.

Is 54LS377FM equivalent to 74LS377?

Sourcing buyers need to know if a cheaper commercial grade can substitute.

Where can I buy 54LS377FM in stock?

Transactional intent to find availability and lead time.

What is the price of 54LS377FM?

Critical for BOM cost estimation.

Is 54LS377FM obsolete or active?

Brokers check lifecycle to avoid supply chain issues.

What is the operating temperature range of 54LS377FM?

Ensures part meets environmental requirements.