SN7400D

Overview

The SN7400D is a Texas Instruments logic gate integrated circuit belonging to the standard 7400 series. It contains four independent 2-input NAND gates housed in a 14-pin SOIC surface-mount package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a low-level output current of 16 mA with a high-level output current of -400 µA. Propagation delay is specified at 11 ns, while maximum delay reaches 22 ns under specific load conditions. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent 2-input NAND logic gates for complex boolean operations
• Utilizes standard 7400 TTL technology for reliable digital signal processing
• Designed for surface-mount assembly using a compact 14-SOIC package

Applications

• Digital logic circuit design requiring basic NAND functionality
• Signal gating and switching applications in electronic systems
• Implementation of combinational logic networks

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against official datasheet specifications. Confirm the package type matches the required 14-SOIC footprint for PCB layout compatibility. Ensure the operating temperature range meets the environmental requirements of the target application. Cross-reference the ordering suffix to confirm the specific tube packaging details provided by the supplier.

Selection Notes

Select this component when a standard quad 2-input NAND gate is required for surface-mount designs. The SN7400D offers a balance of speed and drive capability suitable for general-purpose digital logic. Consider the 14-SOIC package dimensions during board space planning. Verify that the 5V logic levels align with the interfacing components in the system architecture.

Part Context

This part belongs to the extensive SN7400 family of logic ICs manufactured by Texas Instruments. The 'D' suffix specifically denotes the SOIC surface-mount package variant, distinguishing it from through-hole options like the SN7400N. It serves as a fundamental building block in digital electronics, providing essential NAND logic functions within a standardized industrial package format.

Replacement Considerations

Compatible substitutes include other manufacturers' equivalents such as the MC74HC00 or CD74HC00 for HC series upgrades. For direct pin-compatible replacements within the same series, verify availability of SN74LS00D variants if lower power consumption is acceptable.