DM74S182N

Specialty Logic Overview

The DM74S182N is a high-speed look-ahead carry generator manufactured by Fairchild Semiconductor in the S-series logic family. Housed in a 16-lead Plastic Dual-In-Line Package (PDIP), this integrated circuit anticipates carry signals across four binary adders or groups of adders. It features cascadable architecture to support multi-bit arithmetic operations. The device operates within a standard voltage range and is designed for applications requiring fast carry propagation in digital computing systems.

Specialty Logic Feature Summary

• High-speed look-ahead carry generation capability
• Cascadable design for multi-bit expansion
• Anticipates carry across four binary adder groups

Specialty Logic Applications

• High-speed parallel adder circuits
• Multi-bit arithmetic logic units
• Digital computing systems requiring fast carry propagation

Specialty Logic Procurement Notes

Verify the specific package variant, as the N suffix denotes a PDIP package. Confirm RoHS compliance status, as historical data indicates potential non-compliance for certain manufacturing batches. Ensure the source document explicitly lists DM74S182N to avoid confusion with similar S-series components like the DM74S181 or DM74S183. Check for obsolescence notices from Fairchild or acquired entities.

Specialty Logic Selection Notes

Select this component when designing synchronous arithmetic circuits that require reduced carry propagation delay compared to ripple-carry methods. The S-series offers higher speed than LS or ALS counterparts but consumes more power. Ensure the system voltage matches the standard TTL requirements and that the 16-pin DIP footprint fits the target PCB layout constraints.

Specialty Logic Part Context

This part belongs to the Fairchild 74S series, known for saturated logic families offering improved switching speeds over standard 7400 series parts. The DM74S182 specifically addresses the bottleneck of carry signal delays in multi-bit addition, serving as a critical building block for high-performance digital processors and calculators from the era of bipolar logic dominance.

Specialty Logic Replacement Considerations

Public confirmed substitute part numbers include DM54S182J for military-grade variants. Cross-reference with National Semiconductor equivalents if sourcing from acquired inventory. Verify pin compatibility before substituting with other look-ahead carry generators.