DM74155N

Overview

The DM74155N is a dual 2-line to 4-line decoder/demultiplexer manufactured by onsemi. It operates within a supply voltage range of 4.75 V to 5.25 V and supports through-hole mounting in a 16-DIP package. The device functions as a demultiplexer, directing input signals to one of four outputs based on two address lines. It is designed for standard logic applications with an operating temperature range of 0°C to 70°C.

Feature Summary

• Dual independent decoding channels
• Active-low output enable control
• Direct binary addressing capability

Applications

• Data routing in digital systems
• Address decoding for memory selection
• Signal distribution networks

Procurement Notes

Verify the specific datasheet revision and package tolerance against design requirements. Confirm that the 16-DIP through-hole form factor matches the PCB footprint. Ensure the 5V supply rail stability meets the specified voltage limits for reliable operation.

Selection Notes

Select this component when dual independent 2-to-4 decoding is required in a through-hole configuration. It serves as a direct replacement for legacy 74LS155 designs where pin compatibility and logical function are the primary constraints for system integration.

Part Context

This part belongs to the DM74xx series of bipolar logic devices from onsemi. These components are established solutions for general-purpose digital logic, offering robust performance in industrial and commercial environments requiring standard TTL-compatible interfaces and proven reliability.

Replacement Considerations

The SN74LS155N from Texas Instruments is a confirmed direct substitute. Verify pinout compatibility and electrical characteristics before implementation.