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Texas Instruments 74LS245PC — Logic ICs

74LS245PC Bus Transceiver, LS Series TTL, Active

MPN74LS245PC
End of Life

74LS245PC, LS Series TTL, Bus Transceiver, Bulk package, Active lifecycle.

$0.78Ref. price · indicative, final on quote
Texas Instruments 74LS245PC datasheet (PDF)
RoHSNot applicable
Series*
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

74LS245PC specifications
ParameterValue
Series*
PackageBulk

Product details

The 74LS245PC is an LS-series TTL bus transceiver — a bidirectional, 8-bit buffer/line driver designed for two-way data flow on a common bus. It sits in parallel-backplane or memory-bus interface roles where the direction pin (DIR) and output-enable (OE) control which side drives the bus. The LS family runs from a 5 V supply and draws lower power than the original 74-series TTL while keeping the same logic thresholds.

Bulk packaging — shelf and handling note

(tube or loose), not tape-and-reel. For a rework bench or storeroom that pulls a few pieces at a time, bulk avoids the waste of opening a full reel. Store the tubes in a dry, ESD-safe bin — no moisture-bake requirement before hand-soldering, but keep the leads clean for wave-solder or press-fit sockets.

Frequently asked questions

What is the difference between 74LS245 and 74HCT245?

The 74LS245 is an LS-series TTL part running from a 5 V supply with standard TTL input thresholds. The 74HCT245 is a high-speed CMOS part that is pin-compatible but uses CMOS input thresholds and typically draws lower quiescent current. If your existing board is designed for LS logic levels, the 74LS245PC is the drop-in replacement; switching to HCT may require checking the input voltage thresholds against the driving device.