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Texas Instruments SN74LS14N — Discrete Semiconductors
Texas Instruments

SN74LS14N Texas Instruments 74LS Hex Schmitt-Trigger

MPNSN74LS14N
End of Life

Texas Instruments 74LS series, SN74LS14N, hex Schmitt-trigger inverter, 6 circuits, 1 input per circuit, through-hole 14-DIP (0.300", 7.62 mm), 4.75 V to 5.25 V supply, 0°C to 70°C operating temperature.

$0.85Ref. price · indicative, final on quote
SN74LS14N datasheet
Packaging14-DIP (0.300", 7.62mm)
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

SN74LS14N Technical Specifications
ParameterValue
Series74LS
Logic typeInverter
Mounting typeThrough Hole
Voltage4.75V ~ 5.25V
Current - output high, low400µA, 8mA
Number of inputs1
Operating temperature0°C ~ 70°C
PackageTube
FeaturesSchmitt Trigger
Case14-DIP (0.300\", 7.62mm)
Number of circuits6
Input logic level - low0.5V
Input logic level - high1.9V
Max propagation delay @ v, max CL22ns @ 5V, 15pF

Product details

Six Schmitt-trigger inverters in a 14-pin DIP

The SN74LS14N contains six independent inverter gates with Schmitt-trigger inputs in a 14-pin through-hole DIP. The low-level threshold is 0.5 V, the high-level threshold is 1.9 V.

Where it fits — and where it doesn't

This part is rated 0°C to 70°C. The 14-DIP package is through-hole. Output drive is 400 µA sourcing, 8 mA sinking.

Active, no obsolescence pressure

ROHS3 compliant. For a legacy 5 V TTL design still in the field or a new build that needs a through-hole Schmitt inverter, this part is available through independent distribution.

Frequently asked questions

Is SN74LS14N compatible with 5V TTL logic?

Yes. The supply range is 4.75 V to 5.25 V, and the input thresholds (0.5 V low, 1.9 V high) are directly compatible with standard 5 V TTL outputs. The outputs drive standard LS-TTL loads without extra buffering.

What is the difference between SN74LS14N and SN74LS04?

Both are hex inverters in the same 14-DIP package and pinout, but the SN74LS14N has Schmitt-trigger inputs with hysteresis (0.5 V low threshold, 1.9 V high threshold), while the SN74LS04 uses standard TTL input levels. Use the '14 when you need noise immunity on slow or noisy signal lines — for clean digital rails, the '04 is sufficient.