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Texas Instruments SN74AS1805N — Analog & Data Acquisition
Texas Instruments

SN74AS1805N AS TTL NOR Gate, 6-Function, Active

MPNSN74AS1805N
End of Life

Texas Instruments SN74AS1805N, AS Series, NOR Gate, 6-Function, TTL, Active, RoHS non-compliant, Bulk.

$1.61Ref. price · indicative, final on quote
SN74AS1805N datasheet
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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74AS1805N Technical Specifications
ParameterValue
Series*
PackageBulk

Product details

6-function NOR gate in the AS TTL family

The SN74AS1805N is a 6-function NOR gate, AS series, TTL logic. AS-series parts switch faster than 74LS logic but draw more supply current.

Active status — no LTB urgency, but watch the RoHS flag

The SN74AS1805N carries an Active lifecycle status, so there is no last-time-buy window to chase. One constraint: the part is RoHS non-compliant. If your BOM requires lead-free assembly or you are building for a market that enforces RoHS exemptions, this part needs a waiver or a leaded-process line. For legacy repair or mil/aero builds where tin-lead is still the standard, it is a straightforward fit.

Bulk packaging — repair bench vs. pick-and-place

That is fine for bench repair, prototype runs, or low-volume production where hand-stuffing is the norm. For high-volume pick-and-place, you will need to transfer to tube feeders or request an alternate packaging variant from TI.

Frequently asked questions

What is the function of SN74AS1805N?

It contains six independent NOR gates in one package, used for logic gating, decoding, and signal inversion in 5 V digital circuits.

Is SN74AS1805N RoHS compliant?

No, the SN74AS1805N is RoHS non-compliant. It uses leaded solder and is not suitable for lead-free assembly lines without a waiver.

Can SN74AS1805N be replaced with a 74LS series equivalent?

A 74LS NOR gate will not be a direct electrical drop-in — the AS series has different input thresholds and drive current. For a pin-compatible replacement, consider the 4030BDM (a quad 2-input NOR gate in a similar logic family), but verify the number of gates and package footprint against your board.