CD74FCT843AM96E4 Equivalent & Substitute Parts

Part Overview

The CD74FCT843AM96E4 is a D-Type Transparent Latch logic IC with 9:9 circuit configuration and tri-state output capability, housed in a 24-SOIC surface mount package. Manufactured by Texas Instruments, this component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

CD74FCT843AM96E4

Texas InstrumentsIn Stock: 963CD74FCT843AM96E4 Datasheet

Current PartRFQ

CD74FCT843AM

National SemiconductorIn Stock: 4163CD74FCT843AM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74FCT843AM96E4 is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch (identical functional architecture)
• Circuit Configuration: 9:9 (identical channel and bit organization)
• Output Type: Tri-State (identical output control capability)
• Voltage Supply Range: 4.75V ~ 5.25V (identical operating voltage)
• Propagation Delay: 9ns (identical timing specification)
• Output Current Ratings: 15mA (High) / 48mA (Low) (identical drive capability)
• Operating Temperature Range: 0°C ~ 70°C (identical thermal operating window)
• Package Type: 24-SOIC (identical physical and electrical interface)

The CD74FCT843AM qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The CD74FCT843AM (National Semiconductor) is the qualified substitute for the obsolete CD74FCT843AM96E4. Selection of this alternative is supported by:

• Complete electrical parameter equivalence across all specified ratings
• Identical package footprint and pinout compatibility (24-SOIC)
• Active product status ensuring procurement availability and supply chain continuity
• Compliance with ROHS3 and REACH standards (as applicable to the original specification)
• Maintained EAR99 export classification alignment

Frequently Asked Questions (FAQ)

Q: Can the CD74FCT843AM be used as a direct replacement for the CD74FCT843AM96E4?

A: Yes. The CD74FCT843AM meets all electrical and mechanical substitution criteria, including logic type, circuit configuration, output characteristics, voltage supply range, propagation delay, output current ratings, operating temperature range, and 24-SOIC package specification.

Q: What is the primary reason for seeking a substitute?

A: The CD74FCT843AM96E4 is classified as obsolete. The CD74FCT843AM maintains active product status, ensuring long-term availability and supply chain reliability.

Q: Are there any package or pinout differences?

A: No. Both components use the 24-SOIC package with identical pinout and footprint specifications, enabling direct PCB-level substitution without layout modifications.

Q: How do the manufacturers compare?

A: The original part is manufactured by Texas Instruments; the substitute is manufactured by National Semiconductor. Both manufacturers produce components within the 74FCT logic family with equivalent specifications.

Q: What parameters must remain identical for substitution?

A: Logic type (D-Type Transparent Latch), circuit configuration (9:9), output type (Tri-State), voltage supply range (4.75V ~ 5.25V), propagation delay (9ns), output current ratings (15mA/48mA), operating temperature (0°C ~ 70°C), and package type (24-SOIC) must all match exactly.