SN7405NE4

Overview

The SN7405NE4 is a hex inverter with open-collector outputs belonging to the Texas Instruments 7400 logic series. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to +70°C. The device features six independent inverters housed in a 14-pin PDIP package. Electrical characteristics include a low-level output current capability of 16 mA, a high-level output leakage current of 0.25 mA, and a typical propagation delay of 55 ns at 5 V.

Feature Summary

• Contains six independent inverting channels for signal inversion
• Features open-collector outputs requiring external pull-up resistors
• Supports active-low wired-OR or active-high wire-AND logic functions

Applications

• Implementing active-low wired-OR logic configurations
• Generating high VOH levels through external pull-ups
• Connecting to other open-collector outputs for bus applications

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to lead-free (NIPDAU) packaging as indicated in the manufacturer's package option addendum. Confirm the specific package type matches the required PCB footprint. Ensure the component meets RoHS compliance standards if applicable to the assembly process. Cross-reference the datasheet revision date against the manufacturing lot traceability requirements.

Selection Notes

Select this component when designing circuits requiring multiple inverted signals with open-collector topology. It is suitable for interfacing with higher voltage loads via appropriate pull-up resistors. Consider the bipolar technology characteristics regarding power consumption and switching speed compared to CMOS alternatives. Verify that the 16 mA sink current capacity meets the load requirements of the connected circuitry.

Part Context

This part belongs to the SNx405 family of hex inverters with open-collector outputs. It shares functional similarities with the SN74LS05 and SN74S05 but utilizes standard bipolar TTL technology. The device is distinct from non-inverting buffers and solid-state outputs found in other logic families. It serves as a fundamental building block for digital logic inversion and level shifting applications.

Replacement Considerations

SN7405N is the direct equivalent without the environmental suffix.