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SN74LS02NS is listed in the Inverter Gates range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC GATE NOR 4CH 2-INP 14SO. Review the specifications below when checking this part for your BOM.
The SN74LS02NS is a quadruple 2-input positive-NOR gate manufactured by Texas Instruments. It utilizes Low-Power Schottky (LS) TTL technology to provide high-speed operation with reduced power consumption compared to standard TTL. The device features four independent NOR gates, each accepting two inputs. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a low-level output current of 8 mA. The component is housed in a 14-pin PDIP package designed for through-hole mounting.
Verify the specific suffix 'N' confirms the PDIP-14 through-hole package variant distinct from surface-mount options. Confirm RoHS compliance status as manufacturing specifications may vary by production batch. Ensure the ordering part number matches the exact LS series requirements for your circuit design rather than HC or ALS equivalents.
Select this component when a quadruple 2-input NOR configuration is required in a through-hole assembly environment. The LS series offers a balance of switching speed and power dissipation suitable for general-purpose digital applications. Verify that the 8 mA sink capability meets the load requirements of the connected downstream logic gates.
This part belongs to the widely adopted 74xx series of logic integrated circuits, specifically the LS sub-family known for its improved performance over standard TTL. The SN74LS02NS represents the commercial grade version of the SN54LS02 military-grade device, sharing identical logical functions but differing in operating temperature ranges and reliability standards.
Direct pin-compatible substitutes include SN74LS02D (SOIC package) and SN74LS02DR (SOIC tape-and-reel). Cross-family replacements such as SN74HC02 or SN74HCT02 require verification of voltage level compatibility and input threshold differences.
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