N74F374DB Equivalent & Substitute Parts

Part Overview

The N74F374DB is a D-Type flip-flop logic integrated circuit manufactured by NXP Semiconductors, designed for 8-bit positive edge-triggered applications. This component features tri-state, non-inverted outputs and operates within the 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The 20-SSOP surface mount package provides compact integration for modern PCB layouts.

Substiute Parts

N74F374DB,118

NXP SemiconductorsIn Stock: 811N74F374DB,118 Datasheet

Current PartRFQ

SN74F374DBR

Texas InstrumentsIn Stock: 3061SN74F374DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N74F374DB is determined by strict alignment of the following critical parameters:

• Functional Type: D-Type flip-flop with 1 element, 8-bit configuration
• Output Configuration: Tri-state, non-inverted outputs
• Trigger Mechanism: Positive edge-triggered operation
• Package Format: 20-SSOP surface mount package with identical physical dimensions (0.209", 5.30mm Width)
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V, operating temperature 0°C ~ 70°C
• Compliance Standards: ROHS3 compliant, REACH unaffected, MSL Level 1

The SN74F374DBR from Texas Instruments meets all substitution criteria. Both parts share the identical base product number 74F374 and maintain functional equivalence across all specified parameters. The substitute part is currently in active production status, providing long-term availability advantages over the obsolete N74F374DB.

Parameter Comparison

Engineering Selection Recommendations

The SN74F374DBR from Texas Instruments is the direct substitute for the obsolete N74F374DB. Selection of the Texas Instruments part is supported by the following factors:

• Product Status: The SN74F374DBR maintains active production status, ensuring continued availability and supply chain stability compared to the obsolete N74F374DB.
• Functional Equivalence: Both parts implement identical D-Type flip-flop architecture with 8-bit configuration, tri-state non-inverted outputs, and positive edge triggering.
• Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.
• Package Compatibility: Identical 20-SSOP surface mount package dimensions enable direct PCB layout compatibility without redesign.
• Electrical Performance: The SN74F374DBR operates within the same supply voltage range (4.5V ~ 5.5V) and temperature range (0°C ~ 70°C). The slightly lower clock frequency specification (100 MHz versus 165 MHz) and marginally higher propagation delay (8.5 ns versus 7.5 ns) remain within acceptable operating margins for standard logic applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74F374DBR directly replace the N74F374DB without PCB modifications?

A: Yes. Both parts use the identical 20-SSOP package with matching pin configurations, physical dimensions (0.209", 5.30mm Width), and electrical specifications. Direct substitution on existing PCBs is supported without layout changes.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (NXP versus Texas Instruments) and product status (obsolete versus active). The SN74F374DBR specifies a lower maximum clock frequency (100 MHz versus 165 MHz) and slightly higher propagation delay (8.5 ns versus 7.5 ns). These differences do not affect functional compatibility in standard logic applications.

Q: Are there any supply voltage or temperature range limitations when substituting?

A: No. Both parts operate identically across the 4.5V to 5.5V supply voltage range and 0°C to 70°C operating temperature range. No adjustments to power supply or thermal management are required.

Q: Does the SN74F374DBR meet the same compliance standards?

A: Yes. The SN74F374DBR maintains ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the N74F374DB. Moisture sensitivity level (MSL 1 - Unlimited) is also identical.

Q: What is the significance of the "Tri-State, Non-Inverted" output specification?

A: This specification indicates the part features three-state output logic (high, low, and high-impedance states) with non-inverted signal polarity. Both the N74F374DB and SN74F374DBR implement this identical output configuration, ensuring signal compatibility in bus-oriented applications.

Q: Is the SN74F374DBR available in tape and reel packaging?

A: Yes. The SN74F374DBR is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The N74F374DB packaging format was not specified in the provided data.