SN7402NE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN7402NE4 is a quad 2-input positive-NOR gate IC in a 14-pin DIP package from the classic TTL logic family. It provides 4 independent NOR gates with 50 pF load capacitance and 16 mA sink current. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN7402NE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-input NOR gate configuration delivers 4 independent logic functions in a single 14-pin DIP package
- TTL/H/L family compatibility ensures direct interface with standard 5 V TTL logic systems without level-shifting
- 16 mA output sink current (IOL) supports LED drive and bus-line loads directly from gate outputs
- 50 pF rated load capacitance maintains reliable switching in capacitively loaded signal lines
Applications
SN7402NE4 is a foundational logic building block used in digital circuit design, combinational logic, and signal conditioning boards operating on 5 V TTL rails. Its quad NOR gate topology is commonly deployed in address decoding, interrupt logic, and glue-logic functions in microprocessor-based systems. Educators and prototypers also rely on the DIP-14 package for breadboard-friendly development and classroom demonstration of Boolean logic principles.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Family | TTL/H/L |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | NOR GATE |
| Max I(ol) | 0.016A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Output Characteristics | TOTEM-POLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Prop. Delay@Nom-Sup | 22ns |
| Propagation Delay (tpd) | 22ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN7402NE4:
Frequently Asked Questions
How many independent NOR gate channels does SN7402NE4 provide, and what are their input and output characteristics?
SN7402NE4 contains 4 independent 2-input NOR gates in a single 14-pin DIP package. Each gate supports a maximum load capacitance of 50 pF and can sink up to 16 mA at its output, making it suitable for driving LEDs or TTL bus lines. The device operates within the standard 5 V TTL voltage range, ensuring compatibility with legacy and modern digital logic families.
In what types of digital designs is SN7402NE4 commonly used as a glue-logic solution?
SN7402NE4 is widely used for combinational glue logic in microprocessor address decoding, bus arbitration, and interrupt control circuits where 2-input NOR operations are needed. In older 5 V TTL systems, 4 NOR gates in a 14-pin DIP-14 package replace discrete components and reduce board real estate. It also appears in safety-critical signal conditioning designs that require deterministic Boolean logic without programmable-logic overhead.
What package does SN7402NE4 use and how does that affect PCB layout compared to surface-mount NOR gate alternatives?
SN7402NE4 uses a 14-pin through-hole DIP package with a 2.54 mm (100 mil) pin pitch, which is larger than surface-mount alternatives such as the SN7402D in SOIC-14. The DIP package requires drilled via holes occupying roughly 20 mm × 6 mm of board area, whereas SOIC-14 is approximately 8.7 mm × 3.9 mm. However, the DIP format is preferred for prototyping on breadboards and socketed designs that need easy field replacement.
When would an engineer select SN7402NE4 over a programmable logic device for a simple NOR-based circuit?
For circuits requiring only 1 to 4 NOR gate functions, SN7402NE4 offers a lower bill-of-materials cost—often under $0.50 per unit—and zero firmware overhead compared to a programmable device. The TTL-family gate is immediately available without a programming step, has a well-established 5 V single-supply power budget, and eliminates the risk of firmware corruption. It is the preferred choice when the gate count is fixed and no future reconfiguration is needed.
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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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