CD74HC283E

Specialty Logic Overview

The CD74HC283E is a high-speed CMOS logic device functioning as a 4-bit binary full adder. Manufactured by Harris Corporation, it operates within a supply voltage range of 2V to 6V and utilizes a 16-pin PDIP package for through-hole installation. The component supports an operating temperature range from -55°C to 125°C. It features internal carry lookahead capabilities to facilitate rapid carry propagation during arithmetic operations. Key electrical specifications include a maximum low-level output current of 4mA and a maximum high-level output current of -4mA. The longest propagation delay is specified at 240ns under load conditions.

Specialty Logic Feature Summary

• Performs 4-bit binary addition with internal carry lookahead for efficient carry propagation.
• Operates across a wide industrial temperature range suitable for demanding environments.
• Compatible with standard CMOS logic families via defined input/output characteristics.

Specialty Logic Applications

• Digital arithmetic processing units requiring binary summation
• Industrial control systems utilizing wide temperature tolerance components
• General-purpose logic circuits in consumer electronics

Specialty Logic Procurement Notes

Verify the manufacturer origin carefully, as Harris Corporation assets were acquired by Texas Instruments. Confirm that the specific part number corresponds to the original Harris production run rather than the TI equivalent. Ensure the PDIP-16 package matches the target PCB footprint requirements. Check RoHS compliance status against specific datasheet revisions, as older Harris stock may differ from modern manufacturing standards.

Specialty Logic Selection Notes

Select this component when a dedicated 4-bit binary adder is required for digital logic applications. The HC series offers high noise immunity and low power consumption compared to older logic families. Consider the 125°C maximum operating temperature if the application involves harsh environmental conditions. Verify that the 2V to 6V supply voltage range aligns with the system's power distribution architecture.

Specialty Logic Part Context

This device belongs to the CDx4HC283 series of high-speed CMOS logic adders. It serves as a fundamental building block for digital arithmetic operations. The 'HCT' suffix variants exist for TTL-compatible inputs, while the 'HC' variant provides standard CMOS performance. This specific model represents the through-hole DIP implementation of the 4-bit full adder function.

Specialty Logic Replacement Considerations

CD74HC283EG4 (Texas Instruments) is a verified direct replacement offering identical functionality and pinout compatibility.