74FCT374ATSOG Equivalent & Substitute Parts

Part Overview

The 74FCT374ATSOG is a D-type flip-flop logic integrated circuit manufactured by Renesas Electronics Corporation, configured as a single element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This part is classified as Last Time Buy, indicating end-of-life status from the original manufacturer. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this logic function.

Key Parameters

Parameter	Value
Part Number	74FCT374ATSOG
Manufacturer	Renesas Electronics Corporation
Category	Logic
Function	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Trigger Type	Positive Edge
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Max Propagation Delay @ 5V, 50pF	6.5ns
Current - Output High, Low	15mA, 48mA
Current - Quiescent (Iq)	1 mA
Input Capacitance	6 pF
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution eligibility for the 74FCT374ATSOG is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Function: D-Type Flip-Flop with 1 element, 8-bit configuration
Output Type: Tri-State, Non-Inverted
Trigger Type: Positive Edge
Package: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Voltage Supply Range: Must encompass or be compatible with 4.5V ~ 5.5V
Operating Temperature: Must support -40°C ~ 85°C range
RoHS Status: ROHS3 Compliant

Electrical Performance Parameters:

Max Propagation Delay: 6.5ns or faster at 5V, 50pF load
Output Current Capability: Minimum 15mA (high), 48mA (low)
Quiescent Current: Acceptable range up to several hundred microamperes
Input Capacitance: 5-10 pF acceptable

Substitute parts meeting these criteria are grouped by manufacturer and product status. Parts with identical base product numbers (74FCT374) or functionally equivalent base numbers (74FCT2574, 74FCT574, 74FCT377) from active manufacturers are considered direct substitutes.

Parameter Comparison

Parameter	74FCT374ATSOG (Main)	CD74FCT374M	CY74FCT2574CTSOC	CY74FCT374ATSOC	CY74FCT374CTSOC	CY74FCT574ATSOC
Manufacturer	Renesas	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Last Time Buy	Active	Active	Active	Active	Active
Base Product Number	74FCT374	74FCT374	74FCT2574	74FCT374	74FCT374	74FCT574
Package / Case	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Trigger Type	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge	Positive Edge
Number of Bits	8	8	8	8	8	8
Voltage - Supply	4.5V ~ 5.5V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Max Propagation Delay @ 5V, 50pF	6.5ns	6.6ns	5.2ns	6.5ns	5.2ns	7.2ns
Current - Output High, Low	15mA, 48mA	15mA, 48mA	15mA, 12mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Current - Quiescent (Iq)	1 mA	8 µA	200 µA	200 µA	200 µA	200 µA
Input Capacitance	6 pF	10 pF	5 pF	5 pF	5 pF	5 pF
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Tube	Tube	Tube	Tube	Tube	Tube

Engineering Selection Recommendations

Primary Substitute - CD74FCT374M (Texas Instruments)

CD74FCT374M is the manufacturer-recommended substitute from Texas Instruments. It shares the identical base product number 74FCT374 and maintains functional equivalence with matching output type (Tri-State, Non-Inverted), trigger type (Positive Edge), and 20-SOIC package. Propagation delay is 6.6ns, marginally higher than the original 6.5ns specification. Output current ratings match the original part (15mA, 48mA). This part holds Active product status with ROHS3 compliance and unlimited moisture sensitivity rating. The operating temperature range is 0°C ~ 70°C, which is narrower than the original -40°C ~ 85°C specification and must be evaluated against application requirements.

Secondary Substitutes - CY74FCT374 Series (Texas Instruments)

CY74FCT374ATSOC, CY74FCT374CTSOC, CY74FCT374TSOC, and CY74FCT374ATSOCT are all Active products with identical base product number 74FCT374. All maintain the required 20-SOIC package, Tri-State Non-Inverted output, and Positive Edge trigger. These parts feature enhanced output current capability (32mA, 64mA) compared to the original specification. Propagation delays range from 5.2ns to 10ns depending on variant. All support the full -40°C ~ 85°C operating temperature range. Packaging variants include Tube and Tape & Reel options. CY74FCT374TSOCT is marked as Discontinued at DiGi Electronics and should be avoided for new designs.

Functional Equivalents - CY74FCT2574CTSOC and CY74FCT574ATSOC

CY74FCT2574CTSOC and CY74FCT574ATSOC are functionally equivalent alternatives with different base product numbers (74FCT2574 and 74FCT574 respectively). Both maintain the 20-SOIC package, 8-bit D-type configuration, Tri-State Non-Inverted output, and Positive Edge trigger. These parts are Active products with full -40°C ~ 85°C temperature support and ROHS3 compliance. CY74FCT2574CTSOC exhibits superior propagation delay (5.2ns) and lower output current low specification (12mA) compared to the original. CY74FCT574ATSOC provides propagation delay of 7.2ns with enhanced output current (32mA, 64mA).

Alternative with Temperature Limitation - CY74FCT377ATSOC

CY74FCT377ATSOC is an Active product with base number 74FCT377. It differs in output type specification (Non-Inverted without explicit Tri-State designation in provided data) and exhibits slightly higher propagation delay (7.2ns). This part supports the full -40°C ~ 85°C temperature range and provides enhanced output current (32mA, 64mA). Functional compatibility must be confirmed based on specific tri-state output requirements.

Selection Criteria Summary:

For applications requiring exact parameter matching and narrower operating temperature tolerance, CD74FCT374M is the primary choice. For applications requiring full -40°C ~ 85°C temperature support with enhanced output current capability, CY74FCT374 series variants are preferred. All recommended substitutes maintain ROHS3 compliance, unlimited moisture sensitivity rating, and identical package geometry. Inventory availability is confirmed for all recommended parts.

Frequently Asked Questions (FAQ)

Q: Can CD74FCT374M be used as a direct replacement for 74FCT374ATSOG?

A: CD74FCT374M is functionally compatible with matching base product number, package, output type, and trigger configuration. The operating temperature range differs (0°C ~ 70°C versus -40°C ~ 85°C). Applications operating within 0°C ~ 70°C can use this substitute without modification. Applications requiring full -40°C ~ 85°C operation must select alternatives from the CY74FCT374 series.

Q: What is the difference between CY74FCT374ATSOC and CY74FCT374CTSOC?

A: Both parts share identical base product number 74FCT374, package, and functional specifications. The primary difference is propagation delay: CY74FCT374ATSOC specifies 6.5ns while CY74FCT374CTSOC specifies 5.2ns at 5V with 50pF load. CY74FCT374CTSOC offers superior speed performance. Both support -40°C ~ 85°C operation and are Active products.

Q: Are CY74FCT2574CTSOC and CY74FCT574ATSOC compatible with the original 74FCT374ATSOG?

A: These parts are functionally equivalent alternatives with different base product numbers. All three maintain 8-bit D-type configuration, Tri-State Non-Inverted output, Positive Edge trigger, and 20-SOIC package. Electrical performance parameters differ slightly. These substitutes are suitable for applications where the specific base product number is not a design constraint.

Q: Why does CD74FCT374M have a narrower operating temperature range?

A: CD74FCT374M is specified for 0°C ~ 70°C operation, which is narrower than the original 74FCT374ATSOG specification of -40°C ~ 85°C. This reflects the manufacturer's tested and validated operating envelope for this specific part. Applications requiring extended temperature operation must select CY74FCT374 series variants, which support the full -40°C ~ 85°C range.

Q: What packaging options are available for substitute parts?

A: All recommended substitutes are available in 20-SOIC surface mount package, matching the original part. Packaging format options include Tube and Tape & Reel (TR). CY74FCT374ATSOCT is available in Tape & Reel format. Selection should be based on assembly process requirements and inventory management practices.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the original 74FCT374ATSOG specifications.

Q: Which substitute offers the best propagation delay performance?

A: CY74FCT2574CTSOC and CY74FCT374CTSOC both specify 5.2ns propagation delay at 5V with 50pF load, representing the fastest options among recommended substitutes. The original 74FCT374ATSOG specifies 6.5ns.

Q: Can I use CY74FCT374TSOCT for new designs?

A: CY74FCT374TSOCT is marked as Discontinued at DiGi Electronics. While inventory is available, this part should not be selected for new designs. Active alternatives from the CY74FCT374 series are recommended for design continuity and long-term supply assurance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message