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Texas Instruments SN74ACT244DB — Logic ICs

SN74ACT244DB 74ACT Buffer, Non-Inverting, 3-State, 20-SSOP

MPNSN74ACT244DB
End of Life

Texas Instruments 74ACT series, Buffer/Line Driver, 4-bit, 3-State output, 24 mA drive, 4.5 V to 5.5 V supply, -40°C to 85°C, Surface Mount 20-SSOP package.

$0.42Ref. price · indicative, final on quote
Texas Instruments SN74ACT244DB datasheet (PDF)
Packaging20-SSOP (0.209", 5.30mm Width)
RoHSROHS3 Compliant
Series74ACT
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74ACT244DB specifications
ParameterValue
Series74ACT
Logic typeBuffer, Non-Inverting
Output type3-State
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Current - output high, low24mA, 24mA
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
Case20-SSOP (0.209\", 5.30mm Width)
Number of elements2
Number of bits per element4

Product details

The SN74ACT244DB: 20-pin SSOP body, 5.30 mm wide. The 0.209-inch width fits the common SSOP-20 land pattern; verify your PCB footprint against the mechanical drawing if you're replacing a different 20-pin package. Surface-mount only — no through-hole variant in this order code.

Temperature grade and where it runs

Not qualified to AEC-Q100, so skip it for under-hood automotive or other extended-temperature environments without your own qualification data.

No end-of-life notice on record, so it's still a valid BOM line for new builds.

Frequently asked questions

What is the difference between SN74ACT244DB and SN74ACT244DWR?

Both are the same 74ACT244 buffer in a 20-pin SSOP. The DB suffix indicates a tube or bulk shipment; the DWR suffix is Tape & Reel. Electrical specs are identical.

What is an equivalent to SN74ACT244DB?

A direct functional equivalent is the SN74ABT2245DW — same 5 V supply, 3-state outputs, but it's a transceiver (bidirectional) rather than a buffer, and it comes in a 20-SOIC package. Verify pin compatibility before substitution.