CD74HC02E-NG Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC02E-NG is a quad 2-input NOR gate in the High-Speed CMOS family by Texas Instruments. Key specs: 4 independent NOR gates, 2-input per gate, 2 V to 6 V supply voltage, 14-pin DIP package. From stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC02E-NG Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-input NOR gates: 4 fully independent gates in one package for compact combinational logic design
- HC CMOS family: 2 V to 6 V supply range with low quiescent current and TTL-compatible input thresholds
- 14-pin DIP package for through-hole assembly, prototyping, and breadboard-compatible circuit development
- Industry-standard 74HC02 pinout for easy drop-in replacement across CMOS and TTL logic families
Applications
The CD74HC02E-NG is used in combinational logic circuits for implementing NOR-based Boolean functions, signal inversion, and logic building blocks in embedded and digital systems. NOR gates are functionally complete, meaning any logic function can be constructed from NOR gates alone, making this device valuable for compact FPGA glue logic, PLC input conditioning, and educational electronics projects. The wide 2 V to 6 V supply range makes it compatible with both 3.3 V and 5 V digital systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC02E-NG:
Frequently Asked Questions
What is the CD74HC02E-NG and how many gates does it contain?
The CD74HC02E-NG is a quad 2-input NOR gate IC from Texas Instruments, containing four independent NOR gates each with two inputs. All four gates are electrically independent with shared supply and ground pins, allowing up to four separate logic operations within a single 14-pin package.
What supply voltage range does the CD74HC02E-NG support?
The CD74HC02E-NG operates from 2 V to 6 V supply voltage, making it versatile across 3.3 V and 5 V CMOS digital systems. The HC CMOS logic family provides low quiescent current consumption and TTL-compatible input thresholds, suitable for portable, battery-operated, and low-power applications.
What package does the CD74HC02E-NG use?
The CD74HC02E-NG is housed in a 14-pin DIP (Dual-In-Line Package) for through-hole PCB assembly. The DIP package is ideal for prototyping on breadboards, educational kits, and hand-soldered PCBs where socketing is preferred. The -NG suffix typically denotes a specific variant or packaging qualification level.
What is a NOR gate and why are NOR gates considered functionally complete?
A NOR gate outputs logic 1 only when all inputs are logic 0; otherwise it outputs logic 0. NOR gates are functionally complete because any Boolean logic function — AND, OR, NOT, NAND, XOR — can be constructed using only NOR gates. This makes the CD74HC02E-NG useful as a versatile building block in discrete logic designs with minimal IC count.
What are common alternatives to the CD74HC02E-NG?
Pin-compatible alternatives include the SN74HC02 (DIP and SOIC), the CD74HCT02 for TTL-input-compatible 5 V systems, or the SN74LV02A for 1.65 V to 5.5 V low-voltage operation. For surface-mount designs, the CD74HC02M in SOIC-14 or the SN74AHC02 in TSSOP-14 provide the same NOR function in smaller packages.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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