74FCT374CTSOG Equivalent & Substitute Parts

Part Overview

The 74FCT374CTSOG is a D-type flip-flop logic integrated circuit manufactured by Renesas Electronics Corporation. This 8-bit positive edge-triggered flip-flop with tri-state, non-inverted outputs is housed in a 20-SOIC surface mount package. The part is currently active in production with 860 units in stock. Equivalent and substitute parts are identified based on matching functional characteristics, electrical parameters, and package specifications to ensure direct compatibility in circuit applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	74FCT374CTSOG
Manufacturer	Renesas Electronics Corporation
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Trigger Type	Positive Edge
Max Propagation Delay @ 5V, 50pF	5.2 ns
Voltage Supply Range	4.5V – 5.5V
Current - Output High / Low	15 mA / 48 mA
Current - Quiescent (Iq)	1 mA
Operating Temperature	-40°C to 85°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 74FCT374CTSOG are identified based on the following critical parameters:

Functional Type: D-type flip-flop with 8-bit configuration and positive edge trigger
Output Configuration: Tri-state, non-inverted outputs
Package: 20-SOIC surface mount form factor
Electrical Compatibility: Supply voltage range, propagation delay, output current capability
Compliance: RoHS3 compliance and active product status

Substitutes are grouped into two categories:

Category 1 – Direct Functional Equivalents (Same Base Product Number 74FCT374) Parts with identical base product number and matching electrical parameters within acceptable tolerances.

Category 2 – Functional Alternatives (Related Base Product Numbers) Parts with different base product numbers but equivalent D-type flip-flop functionality, 8-bit configuration, and compatible package specifications.

Parameter Comparison

Part Number	Manufacturer	Type	Output Type	Max Propagation Delay @ 5V, 50pF	Voltage Supply	Output Current (High/Low)	Iq (Quiescent)	Operating Temp	Package	Product Status
74FCT374CTSOG	Renesas	D-Type 8-Bit	Tri-State, Non-Inv	5.2 ns	4.5V – 5.5V	15 mA / 48 mA	1 mA	-40°C to 85°C	20-SOIC	Active
CD74FCT374M	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	6.6 ns	4.75V – 5.25V	15 mA / 48 mA	8 µA	0°C to 70°C	20-SOIC	Active
CY74FCT2574CTSOC	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	5.2 ns	4.75V – 5.25V	15 mA / 12 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT374ATSOC	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	6.5 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT374ATSOCT	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	6.5 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT374CTSOC	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	5.2 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT374TSOC	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	10 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT374TSOCT	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	10 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Discontinued
CY74FCT377ATSOC	Texas Instruments	D-Type 8-Bit	Non-Inverted	7.2 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active
CY74FCT574ATSOC	Texas Instruments	D-Type 8-Bit	Tri-State, Non-Inv	7.2 ns	4.75V – 5.25V	32 mA / 64 mA	200 µA	-40°C to 85°C	20-SOIC	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

CY74FCT374CTSOC and CY74FCT2574CTSOC are the preferred substitutes. Both maintain the 5.2 ns propagation delay specification of the original part, operate across the -40°C to 85°C temperature range, and are housed in the 20-SOIC package. Both are active products with RoHS3 compliance. CY74FCT374CTSOC offers higher output current capability (32 mA / 64 mA) compared to the original specification.

Secondary Substitutes (Acceptable with Parameter Variance)

CY74FCT374ATSOC and CY74FCT374ATSOCT provide equivalent functionality with slightly increased propagation delay (6.5 ns) and higher output current ratings. These parts are suitable for applications where the additional propagation delay is acceptable. CY74FCT374ATSOCT is available in Tape & Reel packaging for high-volume production.

Limited Substitutes (Specific Application Constraints)

CD74FCT374M is restricted to 0°C to 70°C operating temperature, making it unsuitable for applications requiring the full -40°C to 85°C range. CY74FCT374TSOC and CY74FCT374TSOCT exhibit 10 ns propagation delay, acceptable only for timing-non-critical applications. CY74FCT374TSOCT is discontinued and should not be selected for new designs.

Functional Alternatives (Different Base Product Numbers)

CY74FCT377ATSOC and CY74FCT574ATSOC are functionally related D-type flip-flops with compatible 20-SOIC packaging and operating parameters. CY74FCT377ATSOC lacks tri-state output capability (non-inverted output only), limiting its use to applications not requiring output control. CY74FCT574ATSOC provides tri-state output with 7.2 ns propagation delay and is suitable as a functional alternative.

All recommended substitutes maintain RoHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can CD74FCT374M be used as a direct replacement in all applications?

A: CD74FCT374M is not suitable for applications requiring operation below 0°C or above 70°C. The original 74FCT374CTSOG operates from -40°C to 85°C. Use CD74FCT374M only in applications with 0°C to 70°C operating requirements.

Q: What is the difference between CY74FCT374CTSOC and CY74FCT374ATSOC?

A: Both parts are D-type 8-bit flip-flops in 20-SOIC packages. CY74FCT374CTSOC maintains the 5.2 ns propagation delay of the original part, while CY74FCT374ATSOC has 6.5 ns propagation delay. CY74FCT374ATSOC offers higher output current (32 mA / 64 mA vs. 32 mA / 64 mA). Select based on timing requirements.

Q: Are packaging variants (Tube vs. Tape & Reel) electrically equivalent?

A: Yes. CY74FCT374ATSOCT (Tape & Reel) and CY74FCT374ATSOC (Tube) are electrically identical. The packaging difference affects handling and assembly processes only. Tape & Reel packaging is preferred for automated assembly and high-volume production.

Q: Why is CY74FCT374TSOCT listed as discontinued?

A: CY74FCT374TSOCT is discontinued at DiGi Electronics and should not be selected for new designs. Use active alternatives such as CY74FCT374CTSOC or CY74FCT374ATSOC instead.

Q: Can CY74FCT377ATSOC replace the 74FCT374CTSOG?

A: CY74FCT377ATSOC is functionally similar but lacks tri-state output capability, providing only non-inverted output. Use only if the application does not require output control via tri-state logic.

Q: What is the significance of the quiescent current (Iq) difference between parts?

A: The original 74FCT374CTSOG has 1 mA quiescent current, while most substitutes have 200 µA or 8 µA. Lower quiescent current reduces standby power consumption. This difference is significant only in battery-powered or low-power applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and suitable for applications requiring environmental compliance certification.

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