SN74LS Series DIP Logic ICs — 5-Pack, Multiple Models for TTL Circuit Repair & Prototyping

The SN74LS series is the classic low-power Schottky TTL logic family, widely used in legacy digital circuits, vintage electronics restoration, and educational electronics. This 5-pack covers multiple 74LS models in DIP package, providing a cost-effective stock for circuit repair, prototyping, and logic design experiments.

Common 74LS Models Available

Part	Function	Package
74LS00	Quad 2-input NAND gate	DIP-14
74LS02	Quad 2-input NOR gate	DIP-14
74LS04	Hex inverter (NOT gate)	DIP-14
74LS08	Quad 2-input AND gate	DIP-14
74LS32	Quad 2-input OR gate	DIP-14
74LS74	Dual D-type flip-flop	DIP-14
74LS86	Quad 2-input XOR gate	DIP-14
74LS138	3-to-8 line decoder/demultiplexer	DIP-16
74LS245	Octal bus transceiver (3-state)	DIP-20

74LS vs 74HC — Which to Choose?

Feature	74LS (Low-Power Schottky)	74HC (High-Speed CMOS)
Supply Voltage	5V only	2V – 6V
Speed	Fast (Schottky)	Faster at 5V
Power Consumption	Higher	Lower
TTL Compatibility	Native TTL	Requires level consideration
Best For	Legacy TTL repair, vintage systems	New CMOS designs

Key Specifications

Logic Family: 74LS (Low-Power Schottky TTL)
Supply Voltage: 4.75V – 5.25V (5V nominal)
Output Drive: TTL-compatible levels
Package: DIP (DIP-14, DIP-16, or DIP-20 depending on model)
Pack Quantity: 5 pieces per order

Why Choose SN74LS Series?

✅ Texas Instruments SN74LS lineage — industry-standard TTL logic for decades
✅ DIP package — breadboard and through-hole PCB compatible
✅ 5-pack value — spares for repair and prototyping stock
✅ Direct TTL replacement — drop-in for legacy 7400 series circuits