DM7406N

Overview

The DM7406N is a hex inverting buffer featuring high voltage open-collector outputs, housed in a 14-lead Plastic Dual-In-Line (PDIP) package. It operates within a supply voltage range of 4.75V to 5.25V and supports an output voltage up to 30V. The device requires external pull-up resistors for proper logical operation. Key electrical characteristics include a low-level output current of 40mA, input high voltage of 2V, and input low voltage of 0.8V. Propagation delays are specified at 15ns for LOW-to-HIGH transitions and 23ns for HIGH-to-LOW transitions under standard test conditions.

Feature Summary

• Contains six independent buffers performing logic inversion functions
• Features high voltage open-collector outputs requiring external pull-up resistors
• Supports TTL logic levels with defined input voltage thresholds

Applications

• Driving relays or lamps via open-collector interfaces
• Connecting TTL circuits to higher voltage logic systems
• General-purpose signal inversion in digital logic designs

Procurement Notes

Verify the specific ordering code suffix to confirm the package type, as the 'N' suffix denotes the PDIP variant while other suffixes indicate different packages. Confirm that the component meets the required operating temperature range of 0°C to +70°C for commercial applications. Ensure external pull-up resistors are included in the design, as they are mandatory for the open-collector functionality. Check for any specific handling requirements associated with the plastic dual-in-line construction.

Selection Notes

Select this component when a hex inverter with high voltage tolerance is required for interfacing between standard TTL logic and loads operating at voltages up to 30V. The open-collector architecture allows for flexible voltage level shifting provided appropriate pull-up resistors are utilized. Consider the propagation delay specifications if timing constraints are critical for the application. Ensure the power supply remains within the recommended 4.75V to 5.25V range for optimal performance.

Part Context

The DM7406 belongs to the standard 7400 series of logic integrated circuits, specifically designed as hex inverters. Manufactured originally by Fairchild Semiconductor and now part of onsemi's portfolio, it serves as a fundamental building block for digital logic circuits. The PDIP package offers through-hole mounting capabilities suitable for prototyping and legacy board designs.

Replacement Considerations

Compatible replacements include the DM7406M, which shares identical electrical characteristics but utilizes a 14-Lead Small Outline Integrated Circuit (SOIC) package instead of the PDIP form factor.