CY74FCT273CTSOCT Equivalent & Substitute Parts

Part Overview

The CY74FCT273CTSOCT is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit configuration and positive edge triggering. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The part is housed in a 20-SOIC surface mount package with non-inverted output configuration and master reset functionality.

Substiute Parts

CY74FCT273CTSOCT

Texas InstrumentsIn Stock: 742CY74FCT273CTSOCT Datasheet

Current PartRFQ

CY74FCT273TSOC

Texas InstrumentsIn Stock: 1298CY74FCT273TSOC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CY74FCT273CTSOCT is determined by strict alignment of the following critical parameters:

• Identical base product number (74FCT273)
• Matching package configuration (20-SOIC with 0.295", 7.50mm width)
• Identical functional characteristics (D-Type flip-flop, 1 element, 8-bit, positive edge trigger, non-inverted output, master reset)
• Matching electrical specifications (4.75V ~ 5.25V supply voltage, -40°C ~ 85°C operating temperature)
• Equivalent output drive capability (32mA high, 64mA low)
• Identical input capacitance (5 pF)
• Matching quiescent current (200 µA)
• Surface mount configuration

The CY74FCT273TSOC meets all substitution criteria and is classified as an equivalent direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The CY74FCT273TSOC is a direct functional equivalent to the obsolete CY74FCT273CTSOCT. Both parts maintain identical electrical and mechanical specifications, including package geometry, pin configuration, and performance characteristics. The primary distinction is product status: the CY74FCT273CTSOCT is obsolete, while the CY74FCT273TSOC is active and currently manufactured.

For new designs or ongoing production requiring the 74FCT273 logic function, the CY74FCT273TSOC is the appropriate selection. Both parts satisfy ROHS3 compliance and REACH requirements, ensuring regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT273TSOC be used as a direct replacement for the CY74FCT273CTSOCT?

A: Yes. Both parts share identical functional specifications, electrical parameters, and 20-SOIC package configuration. The CY74FCT273TSOC is the active equivalent.

Q: What is the primary reason for substitution?

A: The CY74FCT273CTSOCT is classified as obsolete. The CY74FCT273TSOC provides continued access to the 74FCT273 logic function with active manufacturing status.

Q: Are there any differences in propagation delay between these parts?

A: The CY74FCT273CTSOCT specifies 5.8ns maximum propagation delay at 5V with 50pF load. The CY74FCT273TSOC specifies 13ns maximum propagation delay at 50pF. Both operate within the same voltage and temperature ranges.

Q: Do both parts require identical PCB footprints?

A: Yes. Both parts use the 20-SOIC (0.295", 7.50mm width) package, requiring identical PCB land patterns and assembly procedures.

Q: Are compliance certifications equivalent?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity classification.