SN74F257DRG4 Equivalent & Substitute Parts

Part Overview

The SN74F257DRG4 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement planning. The part operates with a single supply voltage between 4.5V and 5.5V and is suitable for applications requiring multiplexing functionality in the 0°C to 70°C operating temperature range.

Substiute Parts

SN74F257DRG4

Texas InstrumentsIn Stock: 1003SN74F257DRG4 Datasheet

Current PartRFQ

SN74F257DR

Texas InstrumentsIn Stock: 5337SN74F257DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F257DRG4 is determined by strict equivalence across the following critical parameters:

• Circuit configuration (4 x 2:1 multiplexer topology)
• Package type (16-SOIC surface mount)
• Electrical specifications (voltage supply 4.5V ~ 5.5V, output current ratings 3mA/24mA)
• Operating temperature range (0°C ~ 70°C)
• Compliance certifications (ROHS3, REACH Unaffected)

The SN74F257DR qualifies as a parametric equivalent substitute based on identical electrical and mechanical specifications. The primary distinction is packaging format: SN74F257DRG4 is supplied in tube packaging, while SN74F257DR is supplied in Tape & Reel (TR) format. Both parts share the same base product number (74F257) and maintain full functional and pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74F257DR is the direct parametric equivalent for the discontinued SN74F257DRG4. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications. The SN74F257DR carries active product status, ensuring continued availability and supply chain reliability. Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The substitution is suitable for applications where the packaging format difference (tube versus Tape & Reel) does not impose constraints on assembly or procurement workflows. The SN74F257DR is available in higher inventory quantities, supporting both prototype and production-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74F257DR be used as a direct replacement for the SN74F257DRG4?

A: Yes. Both parts are electrically and mechanically identical. They share the same pin configuration, voltage specifications, current ratings, and operating temperature range. The only difference is packaging format: SN74F257DRG4 uses tube packaging, while SN74F257DR uses Tape & Reel format.

Q: What is the difference between tube and Tape & Reel packaging?

A: Tube packaging is used for lower-volume orders and manual handling, while Tape & Reel packaging is optimized for automated assembly processes. Both formats contain the same component with identical electrical performance.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74F257DRG4 and SN74F257DR are ROHS3 compliant and REACH unaffected. They meet identical regulatory and environmental standards.

Q: Why is the SN74F257DRG4 discontinued?

A: Product discontinuation decisions are made by manufacturers and distributors based on market demand and inventory management. The SN74F257DR remains active and available as the current equivalent offering.

Q: Will the SN74F257DR work in my existing PCB design?

A: Yes, provided your PCB is designed for 16-SOIC surface mount components with the specified pin spacing (0.154" width). The electrical and mechanical compatibility is complete.

Q: What is the base product number for these parts?

A: Both parts share the base product number 74F257, indicating they are variants of the same core multiplexer design with different packaging and distribution formats.