CD74AC283M96 Equivalent & Substitute Parts

Part Overview

The CD74AC283M96 is a 4-bit binary full adder with fast carry logic manufactured by Texas Instruments in the 74AC series. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in a 16-SOIC surface mount package and operates across a supply voltage range of 1.5V to 5.5V with an operating temperature range of -55°C to 125°C.

Substiute Parts

CD74AC283M96

Texas InstrumentsIn Stock: 12357CD74AC283M96 Datasheet

Current PartRFQ

CD74HC283M96

Texas InstrumentsIn Stock: 1948CD74HC283M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD74HC283M96 qualifies as a direct substitute for the CD74AC283M96 based on the following alignment of critical parameters:

Functional Equivalence: Both parts implement identical 4-bit binary full adder logic with fast carry functionality.

Package Compatibility: Both parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical pin compatibility.

Operating Temperature Range: Both parts maintain the same operating temperature specification of -55°C to 125°C.

Bit Configuration: Both parts are 4-bit adders with identical logic architecture.

Supply Voltage Consideration: The CD74AC283M96 operates at 1.5V to 5.5V, while the CD74HC283M96 operates at 2V to 6V. The overlap range of 2V to 5.5V provides full compatibility for standard logic applications.

Compliance Standards: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1).

Parameter Comparison

Engineering Selection Recommendations

The CD74HC283M96 is the recommended substitute for the obsolete CD74AC283M96. The substitute part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain continuity. Both parts carry identical RoHS3 compliance and moisture sensitivity ratings, meeting the same regulatory and environmental requirements. The functional equivalence, identical package footprint, and overlapping supply voltage range within standard logic operating conditions support direct substitution in existing designs. The CD74HC283M96 provides improved availability compared to the obsolete 74AC series variant.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC283M96 be used as a direct replacement for the CD74AC283M96?

A: Yes. Both parts implement 4-bit binary full adder logic in the identical 16-SOIC package with matching pin configurations, operating temperature ranges, and compliance certifications. The supply voltage overlap (2V to 5.5V) covers standard logic applications.

Q: What is the primary difference between the 74AC and 74HC series?

A: The 74AC series operates at 1.5V to 5.5V supply voltage, while the 74HC series operates at 2V to 6V. Both series provide equivalent logic functionality and timing characteristics for 4-bit adder applications within their respective voltage ranges.

Q: Are there any package or pinout differences between these parts?

A: No. Both the CD74AC283M96 and CD74HC283M96 use the 16-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and mechanical dimensions.

Q: Why is the CD74AC283M96 listed as obsolete?

A: The 74AC series has been superseded by the 74HC series in Texas Instruments' product portfolio. The CD74HC283M96 provides equivalent functionality with active product status and ongoing manufacturing support.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting identical regulatory requirements.