CD74HC4049M Equivalent & Substitute Parts

Part Overview

The CD74HC4049M 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 capability, designed for applications requiring signal inversion and buffering in digital circuits. The part is currently in Last Time Buy status, indicating that finding functionally equivalent alternatives may be necessary for ongoing production and design requirements.

Substiute Parts

CD74HC4049M

Texas InstrumentsIn Stock: 2086CD74HC4049M Datasheet

Current PartRFQ

CD74HC4049M96

Texas InstrumentsIn Stock: 1653CD74HC4049M96 Datasheet

MFR RecommendedRFQ

74HC4049D,653

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC4049M is determined by the following critical parameters:

• Logic Type: Buffer, Inverting (6 elements, 1 bit per element)
• Output Type: Push-Pull
• Output Current: 5.2mA (High and Low)
• Supply Voltage Range: 2V ~ 6V
• Package / Case: 16-SOIC surface mount
• Base Product Number: 74HC4049

Parts meeting all these electrical and mechanical specifications are considered functionally equivalent. Variations in packaging format (Tube vs. Tape & Reel) and product status do not affect electrical compatibility. Operating temperature range differences are noted but do not preclude substitution where the application temperature requirements fall within the substitute part's range.

Parameter Comparison

Engineering Selection Recommendations

CD74HC4049M96 is the primary substitute option, manufactured by Texas Instruments with Active product status. This part maintains identical electrical specifications and package configuration, differing only in packaging format (Tape & Reel versus Tube). Selection of this part ensures continuity with the original manufacturer and supports long-term supply chain stability.

74HC4049D,653 manufactured by Nexperia USA Inc. is a secondary substitute option. This part meets all electrical and mechanical requirements with one exception: the operating temperature range is -40°C ~ 125°C, which is narrower than the main part's -55°C ~ 125°C range. This part is suitable for applications where the minimum operating temperature requirement does not fall below -40°C. The part carries Active product status and ROHS3 compliance certification.

Both substitute parts carry identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4049M96 be used as a direct replacement for CD74HC4049M?

A: Yes. CD74HC4049M96 is electrically and mechanically equivalent. The only difference is packaging format: CD74HC4049M is supplied in Tube format, while CD74HC4049M96 is supplied in Tape & Reel format. Both are 16-SOIC surface mount packages with identical pin configurations and electrical performance.

Q: What is the key difference between CD74HC4049M and 74HC4049D,653?

A: Both parts are functionally equivalent 6-element inverting buffers in 16-SOIC packages. The primary difference is the operating temperature range: CD74HC4049M operates from -55°C to 125°C, while 74HC4049D,653 operates from -40°C to 125°C. Additionally, 74HC4049D,653 is manufactured by Nexperia USA Inc. rather than Texas Instruments.

Q: Is the 74HC4049D,653 suitable for my application if I need operation below -40°C?

A: No. If your application requires operation below -40°C, the 74HC4049D,653 is not suitable. In this case, CD74HC4049M or CD74HC4049M96 must be used, as both support operation down to -55°C.

Q: Why is CD74HC4049M marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer is discontinuing this part. Existing inventory is available for purchase, but no future production is planned. For new designs or long-term production requirements, CD74HC4049M96 or 74HC4049D,653 should be selected.

Q: Are all three parts RoHS3 compliant?

A: Yes. CD74HC4049M, CD74HC4049M96, and 74HC4049D,653 are all ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: Can I mix packaging formats in production?

A: Yes. Tube and Tape & Reel formats contain identical components. The packaging format affects handling and automated assembly processes but does not affect electrical performance or compatibility.