SN7406DE4

Overview

The SN7406DE4 is a hex inverter buffer and driver manufactured by Texas Instruments, belonging to the standard 7400 logic series. It features six independent inverters with open-collector outputs designed for high-voltage applications. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical characteristics include a low-level output current capability of 40 mA and a high-level output current of -250 uA. The propagation delay is specified at 23 ns when operating at 5 V. The component is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Hex inverter configuration providing six independent signal inversion channels
• Open-collector output structure enabling high-voltage driving capabilities
• High sink current capacity suitable for interfacing with various loads
• Standard TTL-compatible input logic levels

Applications

• Driving high-voltage indicator lamps or LEDs
• Connecting TTL logic circuits to relay coils
• Interfacing with high-voltage bus lines
• General-purpose inverting buffer stages in digital systems

Procurement Notes

Verify the specific suffix 'E' indicates RoHS compliance and green material status as per Texas Instruments documentation. Confirm the SOIC-14 package dimensions match the design footprint requirements. Ensure the procurement source provides valid traceability for this discontinued or limited-stock variant. Cross-reference the manufacturer part number against official TI databases to avoid counterfeit components.

Selection Notes

Select this component when an inverting function with high-voltage tolerance is required. The open-collector output allows for wired-AND configurations and level shifting. Compare the 40 mA sink current against load requirements to ensure adequate drive strength. Consider the 23 ns propagation delay for timing-sensitive applications within the standard 7400 family constraints.

Part Context

This device is part of the Texas Instruments SN7406 family of hex inverters with open-collector outputs. It serves as a robust interface between low-voltage digital logic and higher-voltage analog or power loads. The SOIC-14 package offers a compact surface-mount solution for space-constrained printed circuit board designs requiring reliable signal inversion.

Replacement Considerations

The SN7406DRE4 is a tape-and-reel version of the same functional device. Verify pinout compatibility before substitution. Other manufacturers may offer equivalent parts such as the HD74LS06, but electrical parameters must be validated against the original specifications.