74HCT253N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT253N,652 is a dual 4:1 multiplexer logic integrated circuit manufactured by NXP USA Inc. in a 16-DIP through-hole package. This component functions as a data selector, routing one of four input signals to a single output based on binary control inputs. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing system maintenance, repairs, and legacy design support.

Substiute Parts

74HCT253N,652

NXP USA Inc.In Stock: 70774HCT253N,652 Datasheet

Current PartRFQ

CD74HCT253E

Harris CorporationIn Stock: 3113CD74HCT253E Datasheet

UpgradeRFQ

CD74ACT153E

Harris CorporationIn Stock: 2133CD74ACT153E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HCT253N,652 is determined by the following critical parameters:

• Package Compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Functional Equivalence: Dual 4:1 multiplexer configuration
• Voltage Supply Range: 4.5V ~ 5.5V single supply operation
• Logic Family Compatibility: 74HCT and 74ACT series logic families
• Pin Configuration: Identical pinout and signal routing

The substitute parts listed maintain functional equivalence through identical circuit topology, package form factor, and electrical operating parameters within the specified voltage and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

CD74HCT253E maintains the closest electrical and functional alignment with the 74HCT253N,652. Both components operate within the 74HCT logic family, share identical voltage supply specifications, and support the same temperature range extension to -55°C. The output current specification of 4mA is lower than the original 6mA, which may require circuit evaluation for load-driving applications. This substitute is suitable for applications where RoHS3 compliance is not a requirement.

CD74ACT153E provides functional substitution with enhanced output drive capability at 24mA per output. The 74ACT logic family operates within the same voltage supply range but exhibits different input/output characteristics compared to the 74HCT family. This substitute is appropriate for applications requiring higher output current capacity. RoHS compliance status is non-compliant, consistent with the CD74HCT253E.

Selection between substitutes depends on output current requirements and logic family compatibility with existing circuit design. Both substitutes maintain package compatibility and functional equivalence for multiplexer operation.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT253E directly replace the 74HCT253N,652 in existing designs?

A: Yes, the CD74HCT253E provides direct functional replacement with identical pinout and package configuration. The lower output current specification (4mA versus 6mA) requires verification that downstream load impedance remains compatible with the reduced drive capability.

Q: What is the primary difference between the CD74HCT253E and CD74ACT153E substitutes?

A: The CD74HCT253E operates within the 74HCT logic family with 4mA output current, while the CD74ACT153E operates within the 74ACT logic family with 24mA output current. Both maintain identical package form factor and voltage supply specifications. The 74ACT family provides higher output drive capability suitable for applications with greater load current demands.

Q: Are there compatibility concerns when substituting between 74HCT and 74ACT logic families?

A: Both logic families operate within the same 4.5V ~ 5.5V supply voltage range and maintain compatible input/output logic levels. Substitution is functionally viable; however, circuit design should account for the different output current capabilities and any timing or noise margin considerations specific to the application.

Q: Does the extended operating temperature range of the substitutes (-55°C versus -40°C) affect selection?

A: The extended lower temperature limit of the substitutes provides additional operational margin. This does not create compatibility issues; applications operating within the original -40°C ~ 125°C range remain fully supported by either substitute.

Q: What packaging format is supplied for these substitute parts?

A: Both CD74HCT253E and CD74ACT153E are supplied in tube packaging. The 16-DIP through-hole package configuration remains identical across all three components.

Q: Are there RoHS compliance implications when selecting substitutes?

A: The original 74HCT253N,652 is RoHS3 compliant. Both substitute parts are RoHS non-compliant. Applications subject to RoHS regulatory requirements should evaluate compliance obligations before component selection.