📦 DM74LS03N National Semiconductor (NSC) Integrated Circuit

Logic Family: TTL Low-Power Schottky (LS Series - NSC DM-Prefix Layout)
Function: Quad 2-Input Positive-NAND Gates with Open-Collector Outputs
Package Type: Plastic DIP-14 (Standard Imperial 2.54mm Layout)
Condition: Vintage NOS (New Old Stock), Unused Factory Stock
Quantity: 1 Piece (1pc)

📸 Item Condition & Photos

• Genuine Vintage USA Brand Stock: 100% authentic original vintage semiconductor component manufactured by the historic National Semiconductor Corporation (NSC).
• Physical Condition: Pristine New Old Stock (NOS) condition from original factory tubes or storage packs. The 14 pins are 100% straight, clean, bright, and have never been soldered, socketed, or mounted on any board.
• Visual Verification: The listing features actual high-resolution photos of the component. Please inspect the images to check the original National Semiconductor logo/marking style, the exact part marking "DM74LS03N", and vintage production date/batch codes before purchasing.

🔍 Technical Specifications & Cross Reference

• Brand / Manufacturer: National Semiconductor (NSC / USA)
• Part Number / MPN: DM74LS03N / DM74LS03 / 74LS03N / 74LS03
• Cross Reference / Fully Compatible with: Texas Instruments SN74LS03N, Motorola MC74LS03N, Hitachi HD74LS03P, Signetics 74LS03N, Fairchild 74LS03PC, 74LS03 Series
• Logic Function: Contains four independent 2-input NAND gates performing the boolean function Y = A • B (bar). Features high-performance open-collector outputs designed for wired-AND logic ties, customizable pull-up voltage loads, and level-shifting loops.
• Package Type: Plastic PDIP-14 with Standard Western Imperial Lead Spacing (2.54mm / 0.100" Pin Pitch)
• Pin Count: 14 Pins
• Operating Voltage: Optimized for standard 5V logic systems (4.75V to 5.25V Range).
• Applications: High-grade restoration of vintage computing architectures (IBM PC clones, early Apple, Commodore, Amiga), bus interfacing, wired-AND logic networks, level-shifting circuits, retro arcade PCB repair, and legacy industrial machinery maintenance.

⚙️ Key Features & Hardware Compatibility

• Perfect Fit & Drop-in: Features the standard international imperial 2.54mm pin pitch. This original premium NSC chip drops perfectly into all Western prototype breadboards, modern PCBs, and high-precision machined round-pin sockets (turned-pin sockets) without any pin alignment issues.
• Open-Collector Output Advantage: Outputs can be tied together directly to implement wired-AND configurations or used with custom external pull-up resistors to interface with higher voltage logic lines or drive specific legacy display and signal paths without bus conflicts.
• Low-Power Schottky (LS) technology ensures minimized power consumption while maintaining fast, crisp logic propagation delays and robust noise immunity typical of premium American semiconductor lines.
• 100% original period-correct semiconductor production – an absolute necessity for real hardware restorations where historical brand accuracy and exact circuit timing match the original design layout.
• Meticulously stored in a climate-controlled, smoke-free environment to completely prevent long-term pin oxidation or degradation.

🚚 Packaging & Shipping Information

• ESD Safe Protection: Logic chips are sensitive to static and physical impacts. This component is securely enclosed inside professional anti-static ESD packaging with premium high-density pin-protection foam to guarantee all pins arrive in absolute flawless, unbent condition.
• Fast International Dispatch: Every order is processed quickly, packed securely, and shipped via tracked international airmail. Your global tracking number will be registered on eBay immediately upon dispatch.
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• 🇺🇸 US Buyers Only (DDP Service): Shipped via DDP (Delivery Duty Paid). All import duties, customs clearance processes, and local taxes are fully pre-paid on our side. You pay exactly what you see – zero hidden fees or surprise bills upon delivery!
• 🌐 International Buyers: Worldwide global shipping is available through trusted tracked postal carriers. Buyers located outside the United States are responsible for standard local customs fees or import taxes if applicable in their specific destination country.