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Texas Instruments SN74HCT02PW — DC-DC Power Modules
Texas Instruments

SN74HCT02PW 74HCT Quad 2-Input NOR Gate, 18ns @ 5.5V

MPNSN74HCT02PW
End of Life

Texas Instruments 74HCT series, Logic Type NOR Gate, 4 Circuits, 2-Input, 4.5V ~ 5.5V Supply, -40°C ~ 85°C, Surface Mount, 14-TSSOP (0.173", 4.40mm Width).

$1.16Ref. price · indicative, final on quote
SN74HCT02PW datasheet
Packaging14-TSSOP (0.173", 4.40mm 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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

SN74HCT02PW Technical Specifications
ParameterValue
Series74HCT
Logic typeNOR Gate
Mounting typeSurface Mount
Voltage4.5V ~ 5.5V
Current - quiescent2 µA
Current - output high, low4mA, 4mA
Number of inputs2
Operating temperature-40°C ~ 85°C
PackageTube
Case14-TSSOP (0.173\", 4.40mm Width)
Number of circuits4
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL18ns @ 5.5V, 50pF

Product details

Where it fits and where it does not

The SN74HCT02PW: The -40°C to 85°C range covers factory-floor cabinets, outdoor telecom shelters, and commercial HVAC controllers — anything that does not live under a car hood or in a jet engine bay. The 14-TSSOP package is a fine-pitch surface-mount (0.173" body width, 4.40 mm), so you need a decent pair of tweezers and a steady hand for rework, but it is doable with a hot-air station. No lab bench required: if you have the footprint on the board, it swaps in the field with standard tools.

Sourcing and lifecycle

ROHS3 compliant, so it clears the current environmental directives without a waiver.

Frequently asked questions

What is the propagation delay of SN74HCT02PW?

The maximum propagation delay is 18 ns at a 5.5V supply with a 50 pF load. That is the worst-case figure across temperature and voltage; typical delays are lower.

What is the function of SN74HCT02PW?

It is a quad 2-input NOR gate. Each of the four independent gates performs the NOR logic function: output is high only when both inputs are low. Typical use is inverting or combining digital signals in 5V logic systems.

What is the difference between SN74HCT02PW and SN74HC02PW?

The SN74HCT02PW uses HCT logic (TTL-compatible input thresholds: 0.8V low, 2V high), while the SN74HC02PW uses HC logic (CMOS thresholds: roughly 1.5V at 5V supply). If your input signal comes from a 3.3V microcontroller, the HCT version switches more reliably on a 5V rail because its lower threshold matches TTL levels. Both are quad 2-input NOR gates in the same 14-TSSOP package.