74ACT253PC Equivalent & Substitute Parts

Part Overview

The 74ACT253PC is a logic multiplexer IC featuring a 2 x 4:1 configuration in a 16-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The 74ACT253 series provides dual 4-to-1 multiplexing functionality suitable for digital signal routing and data selection applications.

Substiute Parts

74ACT253PC

onsemiIn Stock: 198474ACT253PC Datasheet

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CD74ACT253E

Harris CorporationIn Stock: 13106CD74ACT253E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACT253PC is determined by the following critical parameters:

• Circuit Configuration: Must be 2 x 4:1 multiplexer topology
• Package Type: Must be 16-DIP (0.300", 7.62mm) for mechanical and electrical compatibility
• Voltage Supply Range: Must support 4.5V ~ 5.5V operation
• Mounting Type: Must be Through Hole to maintain PCB assembly compatibility
• Series Compatibility: Must belong to the 74ACT logic family

The CD74ACT253E qualifies as a direct substitute based on these parameters. Both parts share identical circuit configuration, package specification, and voltage supply requirements, enabling functional equivalence in applications requiring the 74ACT253 multiplexer function.

Parameter Comparison

Engineering Selection Recommendations

Both the 74ACT253PC and CD74ACT253E are classified as obsolete products. Selection between these parts should be based on the following criteria:

74ACT253PC (onsemi): Select this part when the original design specification requires output current capability of 24mA at both high and low logic levels, and the operating temperature range of -40°C to 85°C is sufficient for the application.

CD74ACT253E (Harris Corporation): Select this part when higher output current capability (75mA) is required, or when the extended operating temperature range of -55°C to 125°C is necessary for the application environment. This part provides enhanced performance margins in current-limited applications.

Both parts maintain identical package, voltage supply, and circuit configuration specifications, ensuring direct functional substitution within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT253E directly replace the 74ACT253PC in existing designs?

A: Yes, the CD74ACT253E provides direct functional substitution. Both parts share identical 16-DIP package dimensions, voltage supply requirements (4.5V ~ 5.5V), and 2 x 4:1 multiplexer circuit configuration. The CD74ACT253E offers higher output current capability (75mA versus 24mA) and an extended operating temperature range (-55°C to 125°C versus -40°C to 85°C), making it suitable for applications with more demanding specifications.

Q: What are the key differences between these substitute parts?

A: The primary differences are output current ratings and operating temperature ranges. The CD74ACT253E provides 75mA output current compared to 24mA for the 74ACT253PC, and supports operation from -55°C to 125°C versus -40°C to 85°C. These differences do not affect pin compatibility or basic functional operation.

Q: Are there any compliance or regulatory differences between these parts?

A: The 74ACT253PC is REACH Unaffected. The CD74ACT253E is RoHS non-compliant. Both parts carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Compliance requirements should be verified against specific application and regional regulations.

Q: What packaging options are available for these multiplexer parts?

A: Both the 74ACT253PC and CD74ACT253E are supplied in 16-DIP (0.300", 7.62mm) through-hole packages. The 74ACT253PC is available in standard packaging, while the CD74ACT253E is supplied in tube packaging. Both maintain identical pin configurations and mechanical dimensions for PCB compatibility.

Q: Why are both parts classified as obsolete?

A: Both the 74ACT253PC and CD74ACT253E are obsolete products, indicating they are no longer in active production. Inventory availability may be limited. For new designs, evaluation of current-generation multiplexer alternatives within the 74ACT or compatible logic families is recommended.