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Product Detailed Parameters
- Description：IC GATE NOR 4CH 2-INP 14SO
- Series：7400
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Logic Type：NOR Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：-
- Voltage - Supply：4.75V ~ 5.25V
- Current - Quiescent (Max)：-
- 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
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-SO
- Package / Case：14-SOIC (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74128NSR is a quad 2-input NOR gate line driver manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a low-level output current of 48 mA. The device features a propagation delay of 18 ns and functions reliably across an operating temperature range of 0°C to +70°C. Packaged in a 14-pin Small Outline Package (SOIC), this component is designed for surface-mount technology applications requiring robust digital logic processing.
Feature Summary
- Integrates four independent 2-input NOR gates within a single integrated circuit package
- Provides high drive capability with a low-level output current of 48 mA
- Optimized for line driving applications with specified propagation delay characteristics
Applications
- Digital logic signal processing circuits
- Line driver interfaces for data transmission
- General-purpose logic control systems
Procurement Notes
Verify the specific suffix 'NSR' corresponds to the tape and reel packaging configuration required for your assembly process. Confirm that the 14-pin SOIC footprint matches your PCB design constraints. Ensure the manufacturer is identified as Texas Instruments to guarantee authenticity and compliance with the published electrical specifications.
Selection Notes
Select this component when a quad NOR gate configuration with high sink current capability is required. The 18 ns propagation delay suits moderate-speed digital applications. Consider the 14-pin SOIC package for surface-mount assembly compatibility. Verify that the 4.5 V to 5.5 V operating voltage aligns with your system power supply standards.
Part Context
This part belongs to the standard 7400 series of logic integrated circuits, specifically utilizing the NOR gate function. The NSR designation indicates a surface-mount variant produced by Texas Instruments. It serves as a fundamental building block for complex digital logic designs requiring multiple NOR operations within a compact form factor.
Replacement Considerations
Cross-reference with other SN74128 variants from Texas Instruments or equivalent manufacturers offering identical pinouts and electrical characteristics. Ensure any substitute maintains the 48 mA low-level output current and 14-pin SOIC package dimensions.
