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Texas Instruments SN74LS02N — Logic ICs

SN74LS02N 74LS Quad 2-Input NOR Gate, 15 ns @ 5 V

MPNSN74LS02N
End of Life

Texas Instruments 74LS series SN74LS02N, Quad 2-Input NOR Gate, Through Hole, 14-DIP (0.300", 7.62mm), 4.75V ~ 5.25V supply, 15ns @ 5V, 15pF max propagation delay, 0°C ~ 70°C.

$0.78Ref. price · indicative, final on quote
Texas Instruments SN74LS02N datasheet (PDF)
Packaging14-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74LS
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LS02N specifications
ParameterValue
Series74LS
Logic typeNOR Gate
MountingThrough Hole
Supply voltage4.75V ~ 5.25V
Current - output high, low400µA, 16mA
I/O channels2
Operating temperature0°C ~ 70°C (TA)
PackageTube
Case14-DIP (0.300\", 7.62mm)
Number of circuits4
Input logic level - low0.8V
Input logic level - high2V
Max propagation delay @ v, max CL15ns @ 5V, 15pF

Product details

Quad 2-input NOR gate in the 74LS family

It integrates four independent NOR gates in a single 14-pin DIP package (14-PDIP, 0.300" body width) for through-hole mounting. Each gate accepts two inputs and delivers a NOR output with TTL-compatible levels. The 74LS series balances speed and power, with a typical propagation delay of 15 ns at 5 V and 15 pF load, making it suitable for general-purpose logic in commercial-temperature (0°C to 70°C) environments such as industrial control panels, office equipment, and consumer electronics.

The SN74LS02N operates from a 4.75 V to 5.25 V supply. Input low threshold is 0.8 V; input high threshold is 2 V.

Frequently asked questions

What is the difference between SN74LS02N and SN74HC02N?

The SN74LS02N is a 74LS low-power Schottky TTL device with 15 ns propagation delay and 4.75-5.25 V supply. The SN74HC02N is a high-speed CMOS device with lower power consumption and a wider supply range (2 V to 6 V), but they are not direct pin-compatible replacements without checking the input threshold and output drive differences.