74HC257PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC257PW,112 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 16-TSSOP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates across a 2V to 6V supply range with output currents of 7.8mA for both high and low states, serving applications requiring signal multiplexing in digital logic circuits.

Substiute Parts

74HC257PW,112

Nexperia USA Inc.In Stock: 111374HC257PW,112 Datasheet

Current PartRFQ

MC74VHC257DTR2G

onsemiIn Stock: 3507MC74VHC257DTR2G Datasheet

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SN74HC257PW

Texas InstrumentsIn Stock: 1310SN74HC257PW Datasheet

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SN74HC257PWR

Texas InstrumentsIn Stock: 1951SN74HC257PWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC257PW,112 is determined by the following critical parameters:

Functional Equivalence Requirements:

• Circuit configuration must be 4 x 2:1 multiplexer
• Package type must be 16-TSSOP with identical pin pitch and dimensions
• Mounting type must be surface mount
• Single supply voltage source architecture

Electrical Compatibility Requirements:

• Voltage supply range must encompass or match the 2V ~ 6V specification
• Output current ratings (high and low) must meet or exceed 7.8mA
• Operating temperature range must support the required application environment

Compliance Requirements:

• RoHS3 compliance mandatory
• MSL rating of 1 or equivalent
• REACH unaffected status

All substitute parts listed below satisfy these core substitution criteria within their specified electrical and mechanical tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN74HC257PWR (Texas Instruments)

The SN74HC257PWR is the preferred substitute for the 74HC257PW,112. Both parts share identical electrical specifications (7.8mA output current, 2V ~ 6V supply range) and are from the same 74HC logic family. The SN74HC257PWR maintains active product status with confirmed inventory availability. Packaging is 16-TSSOP surface mount, ensuring direct PCB compatibility. Both parts are ROHS3 compliant with MSL rating of 1.

Secondary Substitute: MC74VHC257DTR2G (onsemi)

The MC74VHC257DTR2G provides functional equivalence with enhanced specifications. Operating temperature range extends to -55°C, and output current capability increases to 8mA. The 74VHC series represents a higher-performance variant of the 74HC family. Supply voltage range is 2V ~ 5.5V, which is compatible with the original 2V ~ 6V specification for most applications operating below 5.5V. This part is currently in active production status.

Tertiary Substitute: SN74HC257PW (Texas Instruments)

The SN74HC257PW matches the original part's electrical characteristics exactly but is listed as discontinued at DiGi Electronics. This part remains available through alternative distribution channels and may be considered for applications where inventory from existing stock is acceptable.

Selection Criteria:

• For new designs and production continuity: SN74HC257PWR
• For extended temperature range requirements: MC74VHC257DTR2G
• For cost-optimized applications within standard temperature range: SN74HC257PW (if available)

Frequently Asked Questions (FAQ)

Q: Can the MC74VHC257DTR2G replace the 74HC257PW,112 in all applications?

A: The MC74VHC257DTR2G is functionally equivalent for applications operating at supply voltages up to 5.5V. The original part supports up to 6V. If your circuit requires operation at 5.5V to 6V, verify that the MC74VHC257DTR2G meets your specific voltage requirements before substitution.

Q: What is the difference between the 74HC and 74VHC series?

A: Both series implement identical logic functions with the same pin configurations. The 74VHC series offers enhanced output current capability (8mA versus 7.8mA) and extended operating temperature range (-55°C to 125°C versus -40°C to 125°C). The 74VHC is a higher-performance variant suitable for demanding applications.

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitutes are packaged in 16-TSSOP surface mount configuration with identical pin pitch and dimensions, ensuring direct PCB compatibility without layout modifications.

Q: Why is the original 74HC257PW,112 marked as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. Active substitutes from other manufacturers (Texas Instruments, onsemi) provide equivalent functionality and are recommended for new designs and production continuity.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level), matching the original part's compliance status.

Q: What is the difference between SN74HC257PW and SN74HC257PWR?

A: Both parts are electrically identical 74HC multiplexers from Texas Instruments. The primary difference is packaging format: SN74HC257PW is supplied in tube packaging, while SN74HC257PWR is supplied in cut tape and Digi-Reel format. The SN74HC257PWR is currently in active production status.