Manufacturer Part Number
SN74128N
Manufacturer
Texas Instruments
Introduction
The SN74128N is a quad 2-input positive-NOR gate from Texas Instruments, belonging to their 7400 logic series.
Product Features and Performance
Quad 2-input NOR gate configuration
Supports positive logic operations
Product Advantages
High fan-out for driving multiple inputs
Reliable TTL technology
Key Technical Parameters
Logic Type: NOR Gate
Number of Circuits: 4
Number of Inputs: 2
Voltage - Supply: 4.75V to 5.25V
Current - Quiescent (Max): 21 mA
Current - Output High, Low: 42.4mA, 48mA
Input Logic Level - Low: 0.8V
Input Logic Level - High: 2V
Max Propagation Delay @ V, Max CL: 18ns @ 5V, 150pF
Quality and Safety Features
Standard TTL noise margins
Operation within 0°C to 70°C temperature range
Compatibility
Compatible with other TTL logic families
Application Areas
Digital logic circuits
Computing systems
Industrial controls
Product Lifecycle
Status: Active
Not near discontinuation
Replacements or upgrades may be available in newer logic families
Several Key Reasons to Choose This Product
TTL compatibility for broad logical function use
Low propagation delay for faster circuit operation
Wide operating voltage range suitable for various power supplies
Through-hole mounting suitable for prototyping and durable connections
Active product status ensuring ongoing production and support
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