SN7404DR

Overview

The SN7404DR is a hex inverter integrated circuit manufactured by Texas Instruments. It belongs to the standard 7400 series logic family and utilizes bipolar transistor-transistor logic (TTL) technology. The device contains six independent inverting gates, each performing logical negation on its input signal. It is designed for surface-mount installation in a 14-pin Small Outline Integrated Circuit (SOIC) package. The component operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Contains six independent single-input inverters for signal inversion
• Utilizes standard TTL logic technology for reliable digital switching
• Designed for surface-mount assembly in compact electronic circuits

Applications

• Digital logic signal inversion
• Clock signal generation and shaping
• Basic combinational logic circuit construction

Procurement Notes

Verify that the specific part number matches the standard bipolar 7400 series rather than the HC or HCT CMOS variants, as electrical characteristics differ significantly. Confirm the package type is SOIC-14 and check for RoHS compliance status if required by project specifications. Ensure the supply voltage requirements align with standard 5V logic systems.

Selection Notes

Select this component when standard TTL performance is required for basic inversion tasks. It serves as a fundamental building block for digital designs needing multiple inverters in a single package. Consider alternative logic families such as HC or HCT if lower power consumption or wider voltage compatibility is necessary for the application.

Part Context

This component is part of the extensive Texas Instruments 7400 series portfolio, which defines industry-standard digital logic functions. The '04' designation specifically identifies the hex inverter function within this hierarchy. As a widely used general-purpose logic gate, it provides a cost-effective solution for implementing basic Boolean operations in various consumer and industrial electronics.

Replacement Considerations

• SN74HC04DR
• SN74HCT04DR

FAQ

What is the difference between SN7404DR and SN74HC04DR?

The SN7404DR uses standard bipolar TTL technology, while the SN74HC04DR uses high-speed CMOS technology. They have different power consumption levels, noise immunity, and voltage tolerance characteristics.

Does the SN7404DR support 3.3V logic levels?

No, the standard SN7404DR is designed for a 5V supply voltage (4.5V to 5.5V). For 3.3V applications, a variant like the SN74LVC04 or SN74AHC04 should be used instead.