74F257APC Equivalent & Substitute Parts

Part Overview

The 74F257APC is a 4 x 2:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74F257APC operates with single supply voltage between 4.5V and 5.5V and is suitable for applications requiring multiplexing functionality in through-hole mounting configurations.

Substiute Parts

74F257APC

onsemiIn Stock: 219674F257APC Datasheet

Current PartRFQ

SN74F257N

Texas InstrumentsIn Stock: 2302SN74F257N Datasheet

DirectRFQ

SN74F258N

Texas InstrumentsIn Stock: 1224SN74F258N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F257APC are qualified based on the following critical parameters that ensure functional and mechanical compatibility:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Voltage supply range: 4.5V ~ 5.5V single supply
• Output current specifications: 3mA high, 24mA low
• Operating temperature range: 0°C ~ 70°C
• Package type: 16-DIP (0.300", 7.62mm)
• Mounting method: Through hole
• Independent circuits: 1

Both substitute parts listed below meet all these parameters identically to the main part, ensuring direct functional replacement capability.

Parameter Comparison

Engineering Selection Recommendations

SN74F257N (Texas Instruments) is the direct manufacturer equivalent to the 74F257APC. This part maintains active product status and carries ROHS3 compliance certification, making it the primary choice for new designs and production applications requiring the obsolete onsemi part.

SN74F258N (Texas Instruments) is a parametric equivalent that satisfies all electrical and mechanical specifications of the 74F257APC. This part also maintains active status and ROHS3 compliance. Selection between SN74F257N and SN74F258N depends on specific circuit requirements, as both parts are functionally interchangeable within the defined parameter set.

Both substitute parts are available in active production with established supply chains, addressing the obsolescence of the original 74F257APC component.

Frequently Asked Questions (FAQ)

Q: Can SN74F257N and SN74F258N be used interchangeably with 74F257APC?

A: Yes. Both parts meet identical electrical specifications including voltage supply range (4.5V ~ 5.5V), output current ratings (3mA/24mA), operating temperature range (0°C ~ 70°C), and package configuration (16-DIP). Pin-to-pin compatibility is maintained across all three parts.

Q: What is the difference between SN74F257N and SN74F258N?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications as defined in this reference. Selection should be based on circuit design requirements and availability. Consult device datasheets for any functional differences in logic operation.

Q: Why is the 74F257APC listed as obsolete?

A: The 74F257APC has reached end-of-life status with the manufacturer. Active substitute parts from Texas Instruments ensure continued availability for applications requiring 4 x 2:1 multiplexer functionality.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SN74F257N and SN74F258N are ROHS3 compliant. The original 74F257APC RoHS status was not specified in available documentation.

Q: Can these parts be used in new PCB designs?

A: Yes. The Texas Instruments substitutes (SN74F257N and SN74F258N) are active products suitable for new designs. Both maintain full compliance with REACH regulations and carry ROHS3 certification.