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Texas Instruments SN74AHC02RGYR — Logic ICs

SN74AHC02RGYR Quad 2-Input NOR Gate, 74AHC, 2V-5.5V

MPNSN74AHC02RGYR
End of Life

Texas Instruments 74AHC series, SN74AHC02RGYR, NOR Gate, 2V ~ 5.5V supply, 4 Circuits, 2 Inputs, 8mA output, -40°C ~ 125°C, 14-VFQFN Exposed Pad, 14-VQFN (3.5x3.5).

$0.46Ref. price · indicative, final on quote
Texas Instruments SN74AHC02RGYR datasheet (PDF)
Packaging14-VFQFN Exposed Pad
RoHSROHS3 Compliant
Series74AHC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AHC02RGYR specifications
ParameterValue
Series74AHC
Logic typeNOR Gate
MountingSurface Mount
Supply voltage2V ~ 5.5V
Current - quiescent2 µA
Current - output high, low8mA, 8mA
I/O channels2
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case14-VFQFN Exposed Pad
Number of circuits4
Input logic level - low0.5V ~ 1.65V
Input logic level - high1.5V ~ 3.85V
Max propagation delay @ v, max CL8.5ns @ 5V, 50pF

Product details

Temperature range and industrial deployment

The 125°C ceiling is the junction temperature — derate the 8 mA output if ambient plus self-heating pushes toward that limit in a still-air enclosure.

Timing — 8.5 ns at 5V

Max propagation delay is 8.5 ns with a 5V supply driving 50 pF.

Quiescent draw and always-on circuits

Quiescent current maxes at 2 µA across the full voltage range. That makes this gate a candidate for battery-backed power-management logic or always-on supervisory circuits where every microamp counts.

Frequently asked questions

What is the difference between SN74AHC02RGYR and SN74AHCT02RGYR?

The SN74AHCT02 variant uses TTL-compatible input thresholds (typically 0.8V low, 2.0V high) versus the AHC's CMOS thresholds (0.5V–1.65V low, 1.5V–3.85V high). If your driving device is a 5V TTL output, the AHCT version gives cleaner noise margin. For pure CMOS or 3.3V logic, the AHC version is the standard choice.

Does SN74AHC02RGYR have a cross-reference to other NOR gates?

No single-gate NOR direct cross is listed. The closest functional sibling in the 74AHC family is the single-gate NAND SN74AHC1G00DBVT or the single-gate OR SN74AHC1G32DCKT, but those are different logic functions. For a quad NOR replacement, look at the 74AHC02 in alternate packages (SOIC, TSSOP) rather than a different logic type.