74ABT374CSCX Equivalent & Substitute Parts

Part Overview

The 74ABT374CSCX is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates at 200 MHz clock frequency with tri-state, non-inverted outputs suitable for digital logic applications requiring edge-triggered data storage and bus interface capabilities.

Substiute Parts

74ABT374CSCX

onsemiIn Stock: 335774ABT374CSCX Datasheet

Current PartRFQ

SN74ABT374ADWR

Texas InstrumentsIn Stock: 4917SN74ABT374ADWR Datasheet

DirectRFQ

CY74FCT374ATSOCT

Texas InstrumentsIn Stock: 2968CY74FCT374ATSOCT Datasheet

SimilarRFQ

CY74FCT374TSOC

Texas InstrumentsIn Stock: 1935CY74FCT374TSOC Datasheet

SimilarRFQ

CY74FCT374TSOCT

Texas InstrumentsIn Stock: 1098CY74FCT374TSOCT Datasheet

SimilarRFQ

SN74ABT374ADW

Texas InstrumentsIn Stock: 1053SN74ABT374ADW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ABT374CSCX are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

• D-Type flip-flop architecture with 1 element, 8-bit configuration
• Positive edge trigger mechanism
• Tri-state, non-inverted output configuration
• 20-SOIC surface mount package (0.295", 7.50mm Width)
• Operating temperature range: -40°C ~ 85°C
• Voltage supply compatibility within specified ranges
• Output drive capability: 32 mA (high), 64 mA (low)

Substitution Categories:

Direct Substitutes (74ABT Series): Parts maintaining identical series designation, clock frequency (200 MHz), and voltage supply range (4.5V ~ 5.5V). These provide pin-for-pin compatibility with minimal design impact.

Functional Equivalents (74FCT Series): Parts with enhanced clock frequency (250 MHz) and modified voltage supply range (4.75V ~ 5.25V). These offer superior performance characteristics while maintaining identical package, pinout, and output configuration. Voltage supply range adjustment may be required in system design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

SN74ABT374ADWR and SN74ABT374ADW are the primary substitutes for the 74ABT374CSCX. Both parts maintain the 74ABT series designation, identical clock frequency (200 MHz), and matching voltage supply range (4.5V ~ 5.5V). These Texas Instruments components are currently in active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The SN74ABT374ADWR variant is supplied in Tape & Reel packaging, while SN74ABT374ADW is supplied in Tube packaging. Selection between these variants depends on assembly process requirements.

For Enhanced Performance Applications:

The CY74FCT374ATSOCT, CY74FCT374TSOC, and CY74FCT374TSOCT variants offer 74FCT series functionality with 250 MHz clock frequency, providing 25% performance improvement over the original 74ABT374CSCX. These parts require voltage supply adjustment to the 4.75V ~ 5.25V range. CY74FCT374ATSOCT and CY74FCT374TSOC maintain active product status. CY74FCT374TSOCT is discontinued at DiGi Electronics and should be avoided for new designs requiring long-term supply assurance.

Compliance and Availability:

All recommended active substitutes (SN74ABT374ADWR, SN74ABT374ADW, CY74FCT374ATSOCT, CY74FCT374TSOC) carry ROHS3 compliance certification and REACH unaffected status, meeting modern regulatory requirements. All parts share identical MSL rating (1 - Unlimited), eliminating moisture sensitivity concerns during handling and storage.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74ABT374CSCX with SN74ABT374ADWR without circuit modifications?

A: Yes. SN74ABT374ADWR maintains identical voltage supply range (4.5V ~ 5.5V), clock frequency (200 MHz), package configuration (20-SOIC), and output specifications (tri-state, non-inverted, 32 mA / 64 mA). Pin-for-pin compatibility is assured. The only design consideration is packaging format: SN74ABT374ADWR uses Tape & Reel while the original uses standard packaging.

Q: What are the differences between 74ABT and 74FCT series substitutes?

A: The 74FCT series (CY74FCT374ATSOCT, CY74FCT374TSOC, CY74FCT374TSOCT) operates at 250 MHz versus 200 MHz for 74ABT series, providing higher performance. However, 74FCT parts require voltage supply adjustment to 4.75V ~ 5.25V range, which is narrower than the 74ABT range of 4.5V ~ 5.5V. Both series maintain identical package, pinout, and output drive specifications.

Q: Are there packaging differences between substitute options?

A: Yes. SN74ABT374ADWR is supplied in Tape & Reel (TR) format for automated assembly. SN74ABT374ADW is supplied in Tube format for manual handling. CY74FCT374ATSOCT is supplied in Tape & Reel format. CY74FCT374TSOC is supplied in Tube format. CY74FCT374TSOCT packaging is not specified. Select based on your assembly process requirements.

Q: What is the quiescent current difference, and does it matter?

A: The original 74ABT374CSCX specifies 50 µA quiescent current. Substitute parts show higher values: SN74ABT374ADWR and SN74ABT374ADW specify 250 µA, while 74FCT variants specify 200 µA. This represents increased standby power consumption. For battery-powered or low-power applications, evaluate total system power budget impact.

Q: Why is CY74FCT374TSOCT listed if it is discontinued?

A: CY74FCT374TSOCT is included for reference and existing inventory assessment only. This part is discontinued at DiGi Electronics and should not be selected for new designs requiring assured long-term supply. Use CY74FCT374ATSOCT or CY74FCT374TSOC instead for 74FCT series requirements.

Q: Are all substitutes ROHS3 compliant?

A: All active substitute parts (SN74ABT374ADWR, SN74ABT374ADW, CY74FCT374ATSOCT, CY74FCT374TSOC) are ROHS3 compliant. The original 74ABT374CSCX RoHS status is not specified. All parts carry REACH unaffected designation and MSL rating of 1 (Unlimited).

Q: What is the propagation delay impact of using 74FCT substitutes?

A: The original 74ABT374CSCX specifies 5 ns maximum propagation delay at 5V with 50 pF load. CY74FCT374ATSOCT specifies 6.5 ns, while CY74FCT374TSOC and CY74FCT374TSOCT specify 10 ns. For timing-critical applications, verify that increased propagation delay does not violate system timing requirements.