74FCT377CTSOG8 Equivalent & Substitute Parts

Part Overview

The 74FCT377CTSOG8 is a D-Type flip-flop logic integrated circuit manufactured by Renesas Electronics Corporation, configured as a single element 8-bit positive edge-triggered device in a 20-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for digital logic applications requiring edge-triggered data capture and storage.

Substiute Parts

74FCT377CTSOG8

Renesas Electronics CorporationIn Stock: 89574FCT377CTSOG8 Datasheet

Current PartRFQ

CY74FCT377ATSOC

Texas InstrumentsIn Stock: 2019CY74FCT377ATSOC Datasheet

MFR RecommendedRFQ

SN74ABT377ADW

Texas InstrumentsIn Stock: 1271SN74ABT377ADW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74FCT377CTSOG8 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Type: D-Type flip-flop architecture
• Number of Elements: 1
• Number of Bits per Element: 8
• Trigger Type: Positive Edge
• Output Type: Non-Inverted
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount

Identified Substitute Parts:

• CY74FCT377ATSOC (Texas Instruments, Active status)
• SN74ABT377ADW (Texas Instruments, Active status)

Both substitute parts maintain identical functional specifications, package geometry, and thermal operating range as the original 74FCT377CTSOG8, ensuring direct compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

CY74FCT377ATSOC is recommended as the primary substitute for the obsolete 74FCT377CTSOG8. This part maintains the same 74FCT series architecture and is manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain continuity. The CY74FCT377ATSOC is ROHS3 compliant and carries identical functional specifications with compatible electrical performance within the specified operating parameters.

SN74ABT377ADW serves as an alternative substitute, offering enhanced performance characteristics including higher output drive capability (32mA/64mA versus 12mA/48mA) and lower input capacitance (4.6 pF versus 6 pF). This part is also manufactured by Texas Instruments with active status and ROHS3 compliance. The SN74ABT377ADW operates within the same supply voltage and temperature ranges as the original part, though with a narrower supply voltage specification (4.75V ~ 5.25V versus 4.5V ~ 5.5V).

Both substitute parts are surface mount devices in identical 20-SOIC packaging, enabling direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT377ATSOC be used as a direct replacement for the 74FCT377CTSOG8?

A: Yes. Both parts share identical D-Type flip-flop architecture, 8-bit configuration, positive edge trigger, non-inverted output, 20-SOIC package geometry, and operating temperature range. The CY74FCT377ATSOC is electrically compatible and mechanically interchangeable.

Q: What are the key differences between the CY74FCT377ATSOC and SN74ABT377ADW?

A: The primary differences are output drive current (CY74FCT377ATSOC: 32mA/64mA, SN74ABT377ADW: 32mA/64mA are identical), input capacitance (CY74FCT377ATSOC: 5 pF, SN74ABT377ADW: 4.6 pF), quiescent current (CY74FCT377ATSOC: 200 µA, SN74ABT377ADW: 250 µA), and supply voltage range (CY74FCT377ATSOC: 4.75V ~ 5.25V, SN74ABT377ADW: 4.5V ~ 5.5V). Both are functionally equivalent for standard applications.

Q: Are both substitute parts available in the same packaging as the original?

A: Yes. Both CY74FCT377ATSOC and SN74ABT377ADW are supplied in 20-SOIC (0.295", 7.50mm Width) surface mount packages, identical to the 74FCT377CTSOG8. No PCB layout modifications are required.

Q: What is the moisture sensitivity level for these substitute parts?

A: Both substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CY74FCT377ATSOC and SN74ABT377ADW are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.