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Texas Instruments SN74ALS08D — Analog & Data Acquisition
Texas Instruments

SN74ALS08D 74ALS Quad 2-Input AND Gate, 14 ns @ 5V

MPNSN74ALS08D
End of Life

Texas Instruments SN74ALS08D, 74ALS series, Quad 2-Input AND Gate, 14-SOIC, 4.5V~5.5V supply, 8 mA output sink, 14 ns propagation delay @ 5V/50pF, 0°C~70°C operating temperature.

$0.93Ref. price · indicative, final on quote
SN74ALS08D datasheet
Packaging14-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

SN74ALS08D Technical Specifications
ParameterValue
Series74ALS
Logic typeAND Gate
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Current - output high, low400µA, 8mA
Number of inputs2
Operating temperature0°C ~ 70°C
PackageTube
Case14-SOIC (0.154\", 3.90mm Width)
Number of circuits4
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL14ns @ 5V, 50pF

Product details

Quad 2-input AND gate in 14-SOIC — 74ALS logic for 5 V buses

The Texas Instruments SN74ALS08D packs four independent 2-input AND gates in a 14-SOIC package, running on a 4.5 V to 5.5 V supply. It is a standard 74ALS-series part, so it mates directly with 5 V TTL and other ALS/AS logic families on the same backplane. The 14 ns propagation delay at 5 V, 50 pF sets the timing closure window for address decoding, strobe generation, or any combinatorial glue logic where a clean AND function is needed without the faster (but higher-power) 74F or 74AC alternatives.

Output drive and input thresholds

Each gate sinks 8 mA and sources 400 µA. The 8 mA sink handles multiple standard TTL loads or a single low-current LED with a series resistor; the 400 µA source is typical for driving CMOS inputs or high-impedance bus receivers. Input low threshold is 0.8 V, high threshold is 2 V — standard 5 V TTL-compatible levels that guarantee noise margin against a 5 V rail.

Temperature grade and environment

Rated for 0°C to 70°C commercial temperature range. This suits indoor equipment, benchtop instrumentation, telecom line cards in conditioned racks, and general-purpose industrial control panels where the ambient stays within that band. Not specified for automotive or extended industrial environments.

Sourcing and lifecycle

The SN74ALS08D carries an active lifecycle status and is ROHS3 compliant. No last-time-buy pressure on this line.

Frequently asked questions

What is the propagation delay of SN74ALS08D?

The maximum propagation delay is 14 ns at 5 V supply with a 50 pF load. That figure governs the timing budget for address decoding or clock gating in a 5 V bus — it is fast enough for most 8-bit and 16-bit systems but slower than the 5 ns of a 74F00 NAND gate.

Is SN74ALS08D compatible with 5V logic?

Yes, it operates on a 4.5 V to 5.5 V supply with TTL-compatible input thresholds (0.8 V low, 2 V high) and standard ALS output levels. It interfaces directly with 5 V TTL, ALS, AS, and HC logic families without level translation.

What is the equivalent of SN74ALS08D?

A functional equivalent in the same 74ALS family is the SN74ALS11ANS, which is a triple 3-input AND gate in a similar 14-pin surface-mount package. The SN74ALS08D is a quad 2-input gate; the SN74ALS11ANS is a triple 3-input gate — the logic function differs, so they are not pin-compatible drop-in replacements. For a faster quad 2-input NAND gate, the SN74F00DR offers 5 ns propagation delay but draws higher supply current.