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Texas Instruments SN74AHC02DR — Interface & Transceivers

SN74AHC02DR Texas Instruments NOR Gate, 4-Ch 2-Input

MPNSN74AHC02DR
End of Life

Texas Instruments 74AHC series NOR Gate, 4-circuit 2-input, SN74AHC02DR, 14-SOIC surface mount, 2V to 5.5V supply, -40°C to 125°C, 8mA output, 8.5ns propagation delay.

$0.4Ref. price · indicative, final on quote
Texas Instruments SN74AHC02DR datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74AHC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AHC02DR 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-SOIC (0.154\", 3.90mm Width)
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

Quad NOR gate with 8.5 ns propagation delay at 5 V

The SN74AHC02DR: The 8.5 ns maximum propagation delay at 5 V with a 50 pF load defines the speed ceiling for this gate in a standard CMOS fan-out configuration. Symmetric 8 mA output drive (both high and low) means it can directly drive downstream logic inputs or small loads without additional buffering, provided the total capacitive load stays within the datasheet derating curve.

Active lifecycle with ROHS3 compliance

The 2 µA maximum quiescent current keeps the power budget low in battery-powered or always-on subsystems. When the gate inputs are held at valid logic levels, the standby draw is negligible, which matters for systems that spend most of their time in a low-power idle state.

Standard SOIC footprint for PCB integration

No exposed thermal pad or special PCB land pattern is required — standard SOIC-14 footprint with a 0.050" (1.27 mm) pitch will match. The surface-mount assembly is compatible with reflow soldering profiles typical for lead-free boards.

Frequently asked questions

How can I order SN74AHC02DR or check availability?

The SN74AHC02DR is an active-production Texas Instruments part, available through independent distribution.

Will SN74AHC02DR drop into a panel that was specified around SN74AHC1G00DBVT without rewiring?

No — the SN74AHC1G00DBVT is a single 2-input NAND gate in a different package (SOT-23-5 or SC-70-5), while the SN74AHC02DR is a quad 2-input NOR gate in a 14-SOIC. The logic function, pinout, and footprint are all different; a board spin or layout change is required.

What compliance documentation does Texas Instruments provide for SN74AHC02DR?

Texas Instruments provides ROHS3 compliance certification for the SN74AHC02DR. Additional documentation such as material declaration, REACH SVHC disclosure, and conflict minerals reporting is typically available from TI's compliance portal or upon request through distribution channels.