CD74HC4049MT Equivalent & Substitute Parts

Part Overview

The CD74HC4049MT is a 6-element inverting buffer logic IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions as a logic buffer with inverting output stages, operating across a 2V to 6V supply voltage range. The part is classified as Last Time Buy, indicating discontinued production with limited availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for applications requiring this logic function.

Substiute Parts

CD74HC4049MT

Texas InstrumentsIn Stock: 1946CD74HC4049MT Datasheet

Current PartRFQ

CD74HC4049M96

Texas InstrumentsIn Stock: 1653CD74HC4049M96 Datasheet

Parametric EquivalentRFQ

74HC4049D,653

Nexperia USA Inc.In Stock: 241674HC4049D,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC4049MT is determined by strict equivalence across the following critical parameters:

• Logic function: Buffer, Inverting with 6 elements, 1 bit per element
• Output configuration: Push-Pull topology
• Output current capability: 5.2mA high and low
• Supply voltage range: 2V ~ 6V
• Package type: 16-SOIC surface mount
• Base product number: 74HC4049

Substitute parts must maintain identical electrical performance and mechanical compatibility. The 74HC4049 base product number defines the functional family; variants differ only in manufacturer, product status, and minor temperature or packaging designations.

Parameter Comparison

Engineering Selection Recommendations

CD74HC4049M96 (Texas Instruments) is the primary parametric equivalent. This part maintains identical electrical specifications and package configuration while offering Active product status, ensuring continued availability and manufacturing support compared to the Last Time Buy CD74HC4049MT.

74HC4049D,653 (Nexperia USA Inc.) is the manufacturer-recommended alternative. This part provides equivalent logic function and electrical performance with Active status. The operating temperature range is -40°C to 125°C, which is narrower than the CD74HC4049MT (-55°C to 125°C) and should be evaluated against application requirements. All other parameters, including supply voltage, output current, package type, and compliance certifications, remain equivalent.

Both substitute parts are ROHS3 compliant and carry MSL Level 1 rating, matching the original part's environmental and regulatory qualifications.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4049M96 be used as a direct replacement for CD74HC4049MT?

A: Yes. Both parts share identical electrical specifications, output current ratings, supply voltage range, and 16-SOIC package configuration. The primary difference is product status; CD74HC4049M96 is Active while CD74HC4049MT is Last Time Buy.

Q: What is the difference between the Texas Instruments and Nexperia versions?

A: The 74HC4049D,653 (Nexperia) differs in operating temperature range (-40°C to 125°C versus -55°C to 125°C for Texas Instruments variants). All other electrical and mechanical parameters are equivalent. Selection depends on whether the application requires operation below -40°C.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SOIC package with identical pinout and electrical characteristics, enabling direct PCB-level substitution.

Q: Why is the CD74HC4049MT marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Equivalent parts with Active status should be considered for new designs or long-term supply requirements.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating, meeting identical environmental and regulatory requirements.