DM74S151N

Overview

The DM74S151N is a 1-of-8 data selector/multiplexer manufactured by Fairchild Semiconductor. It features complementary outputs and full on-chip decoding to select one of eight data sources. The device operates within a voltage supply range of 2V to 6V and supports surface mount or through-hole mounting depending on the specific package variant, with the N suffix indicating a PDIP package. It functions as a high-speed TTL logic component suitable for digital signal routing applications.

Feature Summary

• Provides 1-of-8 data selection capability with full on-chip decoding
• Delivers both true and complementary output signals
• Operates within standard TTL logic voltage ranges

Applications

• Digital data routing systems
• Multiplexing input signals in control circuits
• Address decoding in memory interfaces

Procurement Notes

Verify the exact package type and pinout configuration against your PCB footprint requirements. Confirm that the operating temperature range meets your environmental specifications. Ensure compatibility with existing TTL logic levels in your design. Check for lead-free compliance if required by your manufacturing standards. Validate that the active status of the part aligns with long-term production plans.

Selection Notes

Select this component when a single-channel multiplexer with complementary outputs is required. Consider the speed characteristics relative to other series like LS or ALS if timing constraints are critical. Evaluate the package style availability for your assembly process. Compare power consumption against alternative logic families for efficiency needs.

Part Context

This part belongs to the 74S series of high-speed TTL logic devices. It is functionally related to other multiplexers in the 74xx family but offers distinct switching speeds. The DM prefix typically denotes military or enhanced grade variants in some manufacturer lineups, though general commercial equivalents exist.

Replacement Considerations

The DM74LS151N is a common functional substitute with slower switching speeds but compatible pinouts. The MM74LS151N is another alternative within the same manufacturer's portfolio. Verify electrical parameters such as propagation delay and drive current before swapping.