DM7406N

Overview

The DM7406N is a hex inverter integrated circuit manufactured by onsemi, belonging to the 7400 series of logic devices. It features six independent inverters with open-collector outputs, capable of driving loads up to 40mA. The device operates within a supply voltage range of 4.75V to 5.25V and supports input logic levels of 0.8V for low and 2V for high. Packaged in a 14-SOIC surface-mount format, it exhibits a maximum propagation delay of 23ns at 5V with a 15pF load. The component is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• Hex inverter configuration with six independent channels
• Open-collector output structure for flexible interfacing
• High current drive capability suitable for direct load connection

Applications

• TTL-to-CMOS level translation interfaces
• Driving relays or lamps directly from logic gates
• Open-collector bus line drivers

Procurement Notes

Verify the specific suffix 'N' against manufacturer documentation, as this part number may indicate legacy status or specific packaging variations not universally listed in current active catalogs. Confirm RoHS compliance requirements, as older 7400 series variants often lack modern environmental certifications. Cross-reference with current equivalents like SN7406DR if lead times or availability are critical constraints for production.

Selection Notes

Select this component when open-collector inversion is required for TTL-compatible circuits. Ensure the application voltage remains strictly within the 4.75V to 5.25V range to maintain signal integrity. Consider the 40mA sink current limit when designing load connections. Verify that the 14-SOIC package dimensions fit the target PCB footprint, noting the 0.154-inch width specification.

Part Context

This device is part of the standard 7400 series logic family, widely used in digital electronics for basic inversion functions. Manufactured by onsemi (formerly National Semiconductor's logic division), it represents a classic bipolar TTL technology implementation. The open-collector design distinguishes it from standard push-pull inverters, allowing for wired-OR configurations and higher voltage switching capabilities beyond the logic supply rail.

Replacement Considerations

Public confirmed substitute part numbers include SN7406NSR and SN7406DR from Texas Instruments. These alternatives offer parameter-equivalent functionality and pin compatibility. Verify that the replacement variant matches the required package type and temperature rating for the specific application environment.