SN7406N

Overview

The SN7406N is a hex inverting buffer and line driver belonging to the Texas Instruments 7400 logic series. It features six independent channels 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 and draws a typical operating current of 100 µA. It provides a low-level output current capability of 40 mA and exhibits a propagation delay of 20 ns at 5 V. The component is housed in a standard 14-pin DIP package and supports through-hole mounting for robust circuit integration.

Feature Summary

• Hex inverting configuration providing six independent signal inversion channels
• Open-collector output structure enabling high-voltage switching capabilities
• High low-level sink current capacity suitable for direct load driving
• Standard TTL logic compatibility for seamless system interfacing

Applications

• TTL-to-CMOS interface buffering
• High-voltage relay driver circuits
• Line termination and impedance matching
• General-purpose digital signal inversion

Procurement Notes

Verify the specific suffix 'N' confirms the PDIP-14 through-hole package variant rather than surface-mount alternatives. Confirm RoHS compliance status as requirements vary by manufacturing batch. Ensure the intended application voltage does not exceed the maximum ratings specified in the official datasheet to prevent device damage.

Selection Notes

Select this component when an inverting function with high-voltage tolerance is required. The open-collector design allows connection to external pull-up resistors, facilitating operation with various logic voltage levels. Compare against non-inverting counterparts like the SN7407 if signal phase preservation is necessary instead of inversion.

Part Context

This part belongs to the legacy 7400 series bipolar logic family, widely utilized in industrial control and general electronics. It serves as a fundamental building block for digital systems requiring signal conditioning. The SN7406N specifically addresses applications needing isolation between low-voltage logic controllers and higher-voltage peripheral loads.

Replacement Considerations

The SN7406DR offers identical electrical characteristics in a SOIC-14 surface-mount package. For non-inverting high-voltage requirements, the SN7407N is the functional equivalent with preserved signal polarity.