CY74FCT157ATSOCT Equivalent & Substitute Parts

Part Overview

The CY74FCT157ATSOCT 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 obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates with single supply voltage and is designed for applications requiring multiplexing of multiple data channels.

Substiute Parts

CY74FCT157ATSOCT

Texas InstrumentsIn Stock: 864CY74FCT157ATSOCT Datasheet

Current PartRFQ

CY74FCT157CTSOCT

Texas InstrumentsIn Stock: 3037CY74FCT157CTSOCT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CY74FCT157ATSOCT is determined by strict equivalence across the following critical parameters:

• Circuit configuration (4 x 2:1 multiplexer topology)
• Package type (16-SOIC surface mount)
• Voltage supply range (4.75V ~ 5.25V single supply)
• Output current specifications (32mA high, 64mA low)
• Operating temperature range (-40°C ~ 85°C)
• Manufacturer series (74FCT base product number)

The substitute part CY74FCT157CTSOCT maintains identical electrical and mechanical specifications, differing only in product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The CY74FCT157CTSOCT is a direct functional equivalent to the CY74FCT157ATSOCT. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The primary distinction is product status: the substitute part is active and currently in production, whereas the main part is obsolete. For new designs or production continuity, the CY74FCT157CTSOCT is the appropriate selection. Both parts maintain identical electrical performance, thermal characteristics, and package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT157CTSOCT be used as a direct replacement for CY74FCT157ATSOCT?

A: Yes. Both parts share identical circuit configuration, electrical specifications, voltage supply range, output current ratings, operating temperature range, and 16-SOIC package dimensions. The parts are functionally interchangeable.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (obsolete vs. active) and packaging format (standard vs. Tape & Reel). All electrical and mechanical parameters are identical.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both parts use the 16-SOIC package with 0.295" width (7.50mm), ensuring identical land pattern compatibility.

Q: Is the substitute part currently available?

A: The CY74FCT157CTSOCT is active and in production, with higher inventory availability compared to the obsolete main part.