CY74FCT191ATSOCT Equivalent & Substitute Parts

Part Overview

The CY74FCT191ATSOCT is a 4-bit binary counter logic IC manufactured by Texas Instruments in the 74FCT series. This component functions as a synchronous counter with positive edge triggering, capable of counting both up and down. The part is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and procurement planning. Active equivalent parts maintain identical electrical and mechanical specifications while offering improved availability and current manufacturing status.

Substiute Parts

CY74FCT191ATSOCT

Texas InstrumentsIn Stock: 1145CY74FCT191ATSOCT Datasheet

Current PartRFQ

CY74FCT191ATSOC

Texas InstrumentsIn Stock: 1341CY74FCT191ATSOC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CY74FCT191ATSOCT is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with 4-bit capacity
• Directional Capability: Up and down counting modes
• Timing Architecture: Synchronous operation with positive edge triggering
• Electrical Specifications: Supply voltage range 4.75 V ~ 5.25 V and operating temperature range -40°C ~ 85°C
• Physical Package: 16-SOIC surface mount form factor with 0.295" (7.50mm) width
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The substitute part CY74FCT191ATSOC maintains all electrical and mechanical parameters identical to the main part. The primary distinction is product status (active versus obsolete) and packaging format (tube versus tape and reel), which do not affect functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The CY74FCT191ATSOC is the direct functional equivalent of the CY74FCT191ATSOCT. Both parts are manufactured by Texas Instruments and share identical electrical characteristics, pin configurations, and performance specifications. The substitute part offers the advantage of active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and MSL Level 1 certification, meeting current environmental and reliability standards. Selection between these parts should be based on procurement requirements and packaging format preferences, as electrical and mechanical compatibility is complete.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT191ATSOC be used as a direct replacement for CY74FCT191ATSOCT?

A: Yes. Both parts are electrically and mechanically identical. They share the same pin configuration, supply voltage requirements, operating temperature range, and 16-SOIC package dimensions. The substitute part is actively manufactured, whereas the original is obsolete.

Q: What is the difference between tape and reel packaging and tube packaging?

A: Tape and reel packaging is used for automated assembly processes, while tube packaging is used for manual handling and smaller quantity orders. Both formats contain the same component with identical electrical specifications. Packaging format does not affect circuit performance or compatibility.

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

A: No. Both the CY74FCT191ATSOCT and CY74FCT191ATSOC maintain ROHS3 compliance and MSL Level 1 rating. Compliance certifications are identical.

Q: What are the key parameters that determine substitutability for this 4-bit binary counter?

A: Substitutability is determined by matching the logic function (4-bit binary counter), directional capability (up/down counting), timing architecture (synchronous positive edge triggering), supply voltage range (4.75 V ~ 5.25 V), operating temperature range (-40°C ~ 85°C), and physical package (16-SOIC surface mount). All these parameters are identical between the main part and substitute.

Q: Is the CY74FCT191ATSOC suitable for new designs?

A: Yes. The substitute part carries active product status from Texas Instruments, making it suitable for new designs and ongoing production. It maintains all specifications and certifications required for current applications.