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Product Detailed Parameters
- Description：IC GATE NOR 4CH 2-INP 14DIP
- Series：74HC
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：NOR Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：-
- Voltage - Supply：2V ~ 6V
- Current - Quiescent (Max)：2 µA
- Current - Output High, Low：5.2mA, 5.2mA
- Input Logic Level - Low：0.5V ~ 1.8V
- Input Logic Level - High：1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL：15ns @ 6V, 50pF
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Supplier Device Package：14-PDIP
- Package / Case：14-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The SN74HC02NE4 is a commercial-grade quadruple 2-input positive-NOR gate manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. The device features buffered inputs, balanced CMOS push-pull outputs, and significant power reduction compared to LSTTL logic ICs. It supports fanout up to 10 LSTTL loads and is housed in a 14-pin PDIP package.
Feature Summary
- Contains four independent 2-input NOR gates performing the Boolean function Y = A + B in positive logic
- Features balanced CMOS push-pull outputs capable of sinking and sourcing similar currents
- Includes standard CMOS inputs with high impedance characteristics
Applications
- Alarm / tamper detect circuit
- S-R latch
Procurement Notes
Verify that the component matches the specific SN74HC02NE4 designation for the PDIP-14 package configuration. Confirm compliance with RoHS standards and lead finish specifications as indicated on the datasheet. Ensure the procurement source provides valid documentation supporting the commercial grade (-40°C to +85°C) operational rating.
Selection Notes
Select this component when a quadruple 2-input NOR gate is required for general-purpose digital logic applications. It is suitable for designs needing wide voltage operation between 2 V and 6 V. Consider its balanced output drive capabilities and low power consumption relative to LSTTL alternatives. Verify that the 14-pin PDIP form factor fits the target PCB layout constraints.
Part Context
This part belongs to the SNx4HC02 family of quadruple 2-input positive-NOR gates produced by Texas Instruments. The HC series denotes High-speed CMOS technology, offering performance improvements over older logic families while maintaining compatibility. The 'N' suffix specifically identifies the PDIP (Plastic Dual In-line Package) variant within the broader product line.
Replacement Considerations
SN74HC02D
FAQ
How should unused inputs be handled?
Unused inputs must not be left floating. They should be terminated at VCC or GND using a pull-up or pull-down resistor, typically 10 kΩ, to prevent undefined operational states.
What is the maximum capacitive load supported?
The device can drive a load with a total capacitance less than or equal to 50 pF while still meeting all datasheet specifications.
