74FCT374ATSOG8 Equivalent & Substitute Parts

Part Overview

The 74FCT374ATSOG8 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 designated as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for production and field replacement applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	74FCT374ATSOG8
Manufacturer	Renesas Electronics Corporation
Category	Logic
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
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
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution of the 74FCT374ATSOG8 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Logic function: D-Type flip-flop, 1 element, 8-bit configuration
Trigger type: Positive edge
Output type: Tri-State, Non-Inverted
Package: 20-SOIC (0.295", 7.50mm Width)
Mounting type: Surface Mount
Supply voltage range: Must encompass or be compatible with 4.5V ~ 5.5V
Operating temperature range: Must support -40°C ~ 85°C minimum

Allowable Parameter Variations:

Propagation delay: Substitute parts with equal or faster (lower) propagation delay are acceptable
Output current: Substitute parts with equal or higher output current capability are acceptable
Quiescent current: May vary; lower values indicate improved power efficiency
Packaging format: Tube or Tape & Reel acceptable for equivalent function

Substitute parts meeting these criteria maintain functional and electrical compatibility while accommodating component lifecycle management and supply chain requirements.

Parameter Comparison

Parameter	74FCT374ATSOG8 (Main)	CD74FCT374M	CY74FCT2574CTSOC	CY74FCT374ATSOC	CY74FCT374ATSOCT	CY74FCT374CTSOC	CY74FCT377ATSOC	CY74FCT574ATSOC
Manufacturer	Renesas	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	D-Type FF	D-Type FF	D-Type FF	D-Type FF	D-Type FF	D-Type FF	D-Type FF	D-Type FF
Elements / Bits	1 / 8	1 / 8	1 / 8	1 / 8	1 / 8	1 / 8	1 / 8	1 / 8
Output Type	Tri-State, Non-Inv	Tri-State, Non-Inv	Tri-State, Non-Inv	Tri-State, Non-Inv	Tri-State, Non-Inv	Tri-State, Non-Inv	Non-Inverted	Tri-State, Non-Inv
Package	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC
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	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temp	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Max Prop Delay @ 5V, 50pF	6.5ns	6.6ns	5.2ns	6.5ns	6.5ns	5.2ns	7.2ns	7.2ns
Output Current (High, Low)	15mA, 48mA	15mA, 48mA	15mA, 12mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Quiescent Current	1 mA	8 µA	200 µA	200 µA	200 µA	200 µA	200 µA	200 µA
Input Capacitance	6 pF	10 pF	5 pF	5 pF	5 pF	5 pF	5 pF	5 pF
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (Highest Compatibility): CY74FCT374ATSOCT and CY74FCT374ATSOC are the most direct substitutes for the 74FCT374ATSOG8. Both maintain identical logic function, 8-bit configuration, tri-state output, and 20-SOIC package. These parts are manufactured by Texas Instruments with Active product status, ensuring long-term availability. Both support the full -40°C ~ 85°C operating temperature range and are ROHS3 compliant. CY74FCT374ATSOCT is available in Tape & Reel packaging, matching the original part's format.

Secondary Substitutes (Functional Equivalents): CY74FCT374CTSOC and CY74FCT2574CTSOC offer faster propagation delay (5.2ns) compared to the original specification (6.5ns), providing performance margin. Both maintain tri-state output, 8-bit configuration, and full temperature range support. CY74FCT2574CTSOC exhibits lower output current capability (15mA / 12mA vs. 15mA / 48mA), requiring circuit-level verification for drive requirements.

Alternative with Output Configuration Difference: CY74FCT377ATSOC functions as a D-type flip-flop with 8-bit configuration but features non-inverted output without tri-state capability. This part is suitable only for applications where tri-state output is not required. Propagation delay is 7.2ns, within acceptable tolerance.

Temperature-Limited Substitute: CD74FCT374M is manufactured by Texas Instruments with identical electrical specifications but operates within 0°C ~ 70°C temperature range, narrower than the original -40°C ~ 85°C specification. This part is suitable only for applications not requiring extended low-temperature operation below 0°C.

All recommended substitutes are ROHS3 compliant and carry REACH Unaffected status, maintaining regulatory compliance equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT374ATSOC directly replace 74FCT374ATSOG8 in existing designs? A: Yes. CY74FCT374ATSOC maintains identical logic function, 8-bit D-type flip-flop configuration, tri-state non-inverted output, 20-SOIC package, and -40°C ~ 85°C operating temperature range. Electrical parameters are compatible with the original specification.

Q: What is the difference between CY74FCT374ATSOC and CY74FCT374ATSOCT? A: Both parts are functionally identical. The primary difference is packaging format: CY74FCT374ATSOC is supplied in Tube packaging, while CY74FCT374ATSOCT is supplied in Tape & Reel (TR) format. Select based on procurement and assembly requirements.

Q: Why does CD74FCT374M have a narrower operating temperature range? A: CD74FCT374M is specified for 0°C ~ 70°C operation, compared to the original -40°C ~ 85°C range. This part is suitable only for applications operating within this narrower temperature window. Verify application temperature requirements before selection.

Q: Can CY74FCT2574CTSOC be used as a substitute despite lower output current? A: CY74FCT2574CTSOC provides 15mA high output and 12mA low output, compared to the original 15mA / 48mA specification. This part is suitable only if circuit load requirements do not exceed these current limits. Perform circuit analysis to confirm compatibility.

Q: Is CY74FCT377ATSOC a suitable replacement? A: CY74FCT377ATSOC is functionally compatible as a D-type flip-flop with 8-bit configuration but lacks tri-state output capability, providing only non-inverted output. This part is suitable only for applications where tri-state output is not required.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original 74FCT374ATSOG8.

Q: What is the significance of propagation delay differences? A: Substitute parts with equal or faster (lower) propagation delay are functionally compatible. CY74FCT2574CTSOC and CY74FCT374CTSOC offer 5.2ns delay versus the original 6.5ns, providing timing margin. CY74FCT377ATSOC and CY74FCT574ATSOC at 7.2ns remain within acceptable tolerance for most applications.

Q: Should I select Tube or Tape & Reel packaging? A: Packaging selection depends on assembly process requirements. Tape & Reel format (CY74FCT374ATSOCT) is standard for automated pick-and-place assembly. Tube format (CY74FCT374ATSOC) is suitable for manual assembly or lower-volume applications. Both formats contain identical components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message