SN7425N

Overview

The SN7425N is a dual 4-input positive-NOR gate integrated circuit manufactured by Texas Instruments. It belongs to the standard 7400 series of TTL logic devices and is housed in a 14-pin Plastic Dual In-Line Package (PDIP). The device features two independent NOR gates, each with four inputs and a strobe function for output control. It operates within a supply voltage range of 4.75V to 5.25V and supports an operating temperature range of 0°C to 70°C. Key electrical characteristics include a maximum low-level output current of 0.8mA and a high-level output current of -16mA.

Feature Summary

• Dual independent 4-input NOR logic functions
• Integrated strobe control for output gating
• Standard 7400 series TTL compatibility
• Robust plastic dual in-line package construction

Applications

• Digital logic circuit design
• Industrial control systems
• Consumer electronics logic interfaces

Procurement Notes

Verify the specific manufacturer part number SN7425N against official Texas Instruments documentation to ensure authenticity. Confirm that the PDIP-14 package matches your PCB footprint requirements. Check for RoHS compliance status if environmental regulations apply to your assembly process. Ensure the operating temperature range meets your system's thermal conditions.

Selection Notes

Select this component when dual 4-input NOR functionality with strobe control is required in a through-hole DIP package. It is suitable for designs utilizing standard 5V TTL logic levels. Consider the 14-pin form factor for prototyping or legacy board replacements. Verify input/output current capabilities align with downstream load requirements.

Part Context

This component is part of the extensive Texas Instruments 7400 series family, which provides standardized logic functions for digital applications. The SN7425N specifically addresses the need for complex NOR operations with enable controls. Its widespread adoption in the industry stems from its reliability and compatibility with other 74-series logic families.

Replacement Considerations

Compatible substitutes may include other manufacturers' equivalents of the 7425 or 74LS25 logic gates, provided they maintain the same pinout and electrical specifications. Verify that any replacement part offers identical PDIP-14 packaging and TTL voltage levels.