SN7405N

Overview

The SN7405N is a hex inverter integrated circuit belonging to the Texas Instruments 7400 series. It features six independent inverters with open collector outputs, designed for TTL logic applications. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 26 ns at 5 V. It provides 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 from 0°C to +70°C and is housed in a standard 14-pin PDIP package.

Feature Summary

• Contains six independent inverting channels for signal inversion
• Equipped with open collector outputs suitable for wired-AND configurations
• Supports high sink current capacity for driving external loads

Applications

• TTL logic interface circuits requiring signal inversion
• Open collector bus systems utilizing wired-AND logic
• General-purpose digital switching applications

Procurement Notes

Verify that the specific part number matches the SN7405N designation rather than variants like SN7405NE4 or SN74LS05N. Confirm the package type corresponds to the standard plastic DIP configuration. Ensure compliance with relevant environmental standards as specified in the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring multiple inverted signals with open collector outputs. It is appropriate for applications needing higher sink current capabilities compared to standard logic gates. Consider the bipolar technology characteristics and specific voltage requirements when integrating into existing TTL-based system architectures.

Part Context

This component is part of the broader 7400 series family of logic integrated circuits. It serves as a fundamental building block for digital electronics, providing reliable inversion functionality. The SN7405N specifically addresses needs for open collector outputs, distinguishing it from standard push-pull output inverters within the same logical family.

Replacement Considerations

SN7405NE4: RoHS-compliant version of the same functional device. SN74LS05N: Low-power Schottky variant with similar pinout but different electrical characteristics.