MM74HC181WM

Specialty Logic Overview

The MM74HC181WM is a high-speed silicon-gate CMOS device belonging to the HC series, functioning as a 4-bit parallel Arithmetic Logic Unit (ALU). It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature range from -55°C to 125°C. The component utilizes a 20-lead Small Outline Package (SOIC) with a 0.3-inch body width. It is pin-compatible with low-power Schottky TTL (LSTTL) standards.

Specialty Logic Feature Summary

• Performs all 16 possible logic operations or 16 different arithmetic operations on active HIGH or active LOW operands via function select inputs and mode control.

Specialty Logic Applications

• High-speed data processing systems requiring parallel arithmetic and logic functions

Specialty Logic Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor's logic division was acquired by Texas Instruments. Confirm that the specific part number corresponds to the intended vintage or current production run. Ensure the package type matches the required PCB footprint and check for RoHS compliance status if environmental regulations apply to the assembly process.

Specialty Logic Selection Notes

Select this component when a 4-bit ALU with LSTTL pin compatibility is required in a CMOS environment. Consider the wider operating voltage range compared to standard TTL devices. Evaluate the thermal performance requirements given the extended industrial temperature range capability of the SOIC package.

Specialty Logic Part Context

This device is part of the broader 74HC family of high-speed CMOS logic components. It serves as a digital arithmetic and logic processing unit, distinct from simple gates or flip-flops. The 'WM' suffix indicates the specific plastic small-outline package configuration used for surface-mount assembly.

Specialty Logic Replacement Considerations

• 74HC181
• MM74HCT181N