74HCT154D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT154D,652 is a Decoder/Demultiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 24-SOIC surface mount package. This component functions as a 1 x 4:16 decoder, converting a 4-bit binary input into one of 16 mutually exclusive outputs. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

74HCT154D,652

Nexperia USA Inc.In Stock: 89274HCT154D,652 Datasheet

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CD74HCT154M

Harris CorporationIn Stock: 4009CD74HCT154M Datasheet

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CD74HCT154M96

Texas InstrumentsIn Stock: 2284CD74HCT154M96 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT154D,652 is determined by strict equivalence in the following parameters:

• Circuit configuration: 1 x 4:16 decoder/demultiplexer function
• Output current specifications: 4mA high, 4mA low
• Supply voltage range: 4.5V ~ 5.5V
• Package type: 24-SOIC form factor
• Mounting method: Surface mount
• Base product series: 74HCT logic family

The identified substitute parts maintain functional and electrical compatibility through identical circuit topology, output drive capability, and supply voltage requirements. Package dimensions remain consistent across all variants, ensuring mechanical interchangeability on printed circuit boards designed for the 24-SOIC footprint.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring the 74HCT154D,652 decoder/demultiplexer function, the CD74HCT154M96 manufactured by Texas Instruments is the primary substitute. This part maintains full electrical and mechanical compatibility while offering active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The CD74HCT154M from Harris Corporation provides functional equivalence but carries obsolete product status and RoHS non-compliance. Selection of this part should be limited to legacy system maintenance where regulatory requirements do not apply.

Both substitute parts extend the operating temperature range to -55°C ~ 125°C compared to the original specification of -40°C ~ 125°C, providing enhanced performance margin in low-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT154M96 be used as a direct replacement for 74HCT154D,652?

A: Yes. Both parts share identical circuit configuration (1 x 4:16), output current specifications (4mA/4mA), supply voltage range (4.5V ~ 5.5V), and 24-SOIC package dimensions. Electrical and mechanical interchangeability is complete.

Q: What is the difference between CD74HCT154M and CD74HCT154M96?

A: Both parts are functionally equivalent 74HCT154 decoders with identical electrical specifications. The primary differences are manufacturer (Harris Corporation vs. Texas Instruments), product status (Obsolete vs. Active), and RoHS compliance (non-compliant vs. ROHS3 compliant). CD74HCT154M96 is preferred for new designs due to active status and regulatory compliance.

Q: Are there package variations among these parts?

A: No. All three parts use the 24-SOIC (0.295", 7.50mm Width) surface mount package. PCB footprints and land patterns are identical, requiring no design modifications for substitution.

Q: Does the extended operating temperature range of the substitutes affect compatibility?

A: No. The extended range (-55°C ~ 125°C for substitutes vs. -40°C ~ 125°C for the original) represents an expanded specification that maintains full compatibility with the original temperature range. Applications operating within the original range experience no functional change.

Q: What compliance certifications apply to these parts?

A: The 74HCT154D,652 and CD74HCT154M96 are ROHS3 compliant. The CD74HCT154M is RoHS non-compliant. All parts carry EAR99 export classification and are REACH unaffected.