74HCT259D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT259D,652 is an 8-bit addressable latch manufactured by Nexperia USA Inc., classified as a D-Type, Addressable logic IC with a 1:8 circuit configuration. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 16-SOIC surface mount package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HCT259D,652

Nexperia USA Inc.In Stock: 101374HCT259D,652 Datasheet

Current PartRFQ

CD74HCT259M

Texas InstrumentsIn Stock: 1319CD74HCT259M Datasheet

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CD74HCT259M96

Texas InstrumentsIn Stock: 1603CD74HCT259M96 Datasheet

UpgradeRFQ

CD74HCT259MT

Texas InstrumentsIn Stock: 1670CD74HCT259MT Datasheet

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MC74HCT259ADR2G

onsemiIn Stock: 1587MC74HCT259ADR2G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT259D,652 is determined by strict equivalence across the following parameters:

• Logic Type & Circuit Configuration: All substitutes must maintain D-Type, Addressable logic with 1:8 circuit configuration
• Package & Mounting: All substitutes must use 16-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width)
• Supply Voltage: All substitutes must operate within 4.5V ~ 5.5V range
• Output Characteristics: All substitutes must provide Standard output type with compatible current ratings
• Compliance: All substitutes must maintain ROHS3 compliance and REACH unaffected status

Substitutes are grouped into two categories: Upgrade parts (improved specifications while maintaining full compatibility) and Similar parts (functionally equivalent with minor specification variations).

Parameter Comparison

Engineering Selection Recommendations

CD74HCT259M96 is the primary recommended substitute. This Texas Instruments part maintains full electrical and mechanical compatibility with the 74HCT259D,652 while offering improved propagation delay (16ns versus 20ns) and extended lower operating temperature range (-55°C versus -40°C). The part carries Active product status and ROHS3 compliance certification.

CD74HCT259M and CD74HCT259MT are functionally equivalent alternatives from Texas Instruments with identical electrical specifications to CD74HCT259M96. Both are discontinued at DiGi Electronics but remain available through alternative distribution channels. CD74HCT259MT is supplied in Tape & Reel packaging, while CD74HCT259M is available in standard packaging.

MC74HCT259ADR2G from onsemi is a similar substitute with full functional compatibility. This part exhibits higher propagation delay (42ns) and increased output current capability (5.2mA versus 4mA), making it suitable for applications requiring higher drive capability. The part is obsolete but maintains ROHS3 compliance.

All substitute parts are pin-compatible and require no circuit modifications for direct replacement in the 16-SOIC footprint.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT259M96 be used as a direct replacement for 74HCT259D,652?

A: Yes. CD74HCT259M96 maintains identical logic type, circuit configuration, supply voltage range, output type, and 16-SOIC package dimensions. The improved propagation delay and extended temperature range represent performance enhancements with no compatibility concerns.

Q: What is the difference between CD74HCT259M, CD74HCT259M96, and CD74HCT259MT?

A: All three parts are electrically identical Texas Instruments 74HCT259 variants with 16ns propagation delay and -55°C to 125°C operating range. The differences are packaging formats: CD74HCT259M is standard packaging, CD74HCT259M96 is Cut Tape and Digi-Reel, and CD74HCT259MT is Tape & Reel. Selection depends on procurement and assembly requirements.

Q: Is MC74HCT259ADR2G compatible with the original 74HCT259D,652?

A: MC74HCT259ADR2G is functionally compatible with identical logic configuration and package. However, it exhibits 42ns propagation delay (versus 20ns) and 5.2mA output current (versus 4mA). Use this substitute only when the higher propagation delay and increased current capability do not conflict with circuit timing or power requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original 74HCT259D,652 environmental certification requirements.

Q: What packaging options are available for substitutes?

A: All substitutes are supplied in 16-SOIC surface mount packages with identical physical dimensions (0.154", 3.90mm Width). Packaging format variations (Cut Tape, Tape & Reel, standard) do not affect electrical or mechanical compatibility.