SN7406D

Overview

The SN7406D is a hex inverting buffer and line driver from the Texas Instruments 7400 logic series. It features six independent inverters with open-collector outputs, designed for high-voltage driving 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 component functions reliably across an operating temperature range of 0°C to +70°C and is housed in a standard SOIC-14 surface-mount package.

Feature Summary

• Contains six independent inverting buffer channels
• Features open-collector outputs suitable for high-voltage interfacing
• Provides significant low-level sink current capacity

Applications

• High-voltage line driving circuits
• Inverting buffer stages in digital logic systems
• Interface between low-voltage logic and higher voltage loads

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and environmental compliance. Confirm availability status as distribution listings may vary. Ensure the selected variant matches the required operating temperature range and pinout configuration for the target PCB design.

Selection Notes

Select this component when inverting functionality combined with open-collector high-voltage drive is required. Compare against non-inverting alternatives like the SN7407 if signal polarity preservation is necessary. Verify that the 40 mA sink current meets the load requirements and that the open-collector topology allows for appropriate pull-up resistor selection.

Part Context

This part belongs to the industry-standard 7400 logic family, widely used for basic digital logic operations. The SN7406 specifically addresses the need for inverting buffers capable of handling voltages beyond standard TTL levels due to its open-collector architecture. It serves as a fundamental building block for interface and driver circuits in general-purpose electronic designs.

Replacement Considerations

The SN7406NE4 is a documented equivalent offering identical logical function in a PDIP-14 through-hole package.