74ABT374CMTC Equivalent & Substitute Parts

Part Overview

The 74ABT374CMTC is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering capability. This component operates at 200 MHz clock frequency with tri-state, non-inverted outputs and is housed in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74ABT374CMTC

onsemiIn Stock: 114574ABT374CMTC Datasheet

Current PartRFQ

SN74ABT374ADBR

Texas InstrumentsIn Stock: 2166SN74ABT374ADBR Datasheet

SimilarRFQ

SN74ABT374APW

Texas InstrumentsIn Stock: 1368SN74ABT374APW Datasheet

SimilarRFQ

SN74ABT374APWR

Texas InstrumentsIn Stock: 2816SN74ABT374APWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ABT374CMTC is determined by strict equivalence across the following critical parameters:

Core Functional Parameters:

• Series: 74ABT (standard TTL logic family)
• 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
• Clock Frequency: 200 MHz minimum

Electrical Parameters:

• Voltage Supply Range: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)

Package Compatibility:

• Surface mount technology required
• Package options: 20-TSSOP or 20-SSOP (both 20-pin configurations)

All substitute parts listed maintain identical functional specifications and electrical operating ranges. Package variations (TSSOP vs. SSOP) represent acceptable mechanical alternatives for the same electrical function, with differences limited to physical dimensions and supplier packaging format.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended):

SN74ABT374APWR and SN74ABT374APW are the preferred substitutes for the 74ABT374CMTC. Both parts are manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. These parts maintain identical package geometry (20-TSSOP, 0.173", 4.40mm Width) and electrical specifications. Both are ROHS3 compliant, meeting modern environmental and regulatory requirements. The SN74ABT374APWR variant is supplied in Tape & Reel format, while SN74ABT374APW is supplied in Tube format, allowing selection based on procurement and assembly requirements.

Secondary Substitute (Package Variant):

SN74ABT374ADBR is a functionally equivalent alternative supplied by Texas Instruments in 20-SSOP package (0.209", 5.30mm Width). This part maintains all core electrical specifications and is ROHS3 compliant with active product status. The package footprint differs from the original 20-TSSOP, requiring PCB layout modification. This substitute is suitable only when PCB redesign is acceptable or when the wider SSOP package accommodates existing board constraints.

Compliance Considerations:

All Texas Instruments substitutes carry ROHS3 compliance certification, supporting regulatory requirements for new designs. The original onsemi part carries obsolete status, making transition to active alternatives necessary for sustained production and support.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT374ADBR be used as a direct replacement for 74ABT374CMTC without PCB modification?

A: No. While SN74ABT374ADBR is electrically equivalent, it uses a 20-SSOP package (0.209", 5.30mm Width) compared to the original 20-TSSOP package (0.173", 4.40mm Width). PCB footprint modification is required. SN74ABT374APWR or SN74ABT374APW are preferred for direct substitution as they maintain the identical 20-TSSOP package geometry.

Q: What is the difference between SN74ABT374APWR and SN74ABT374APW?

A: Both parts are electrically and functionally identical. The difference is in packaging format: SN74ABT374APWR is supplied in Tape & Reel (TR) format for automated assembly, while SN74ABT374APW is supplied in Tube format for manual handling or lower-volume applications. Select based on your assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three Texas Instruments substitutes (SN74ABT374ADBR, SN74ABT374APW, and SN74ABT374APWR) are ROHS3 compliant. The original onsemi part does not specify RoHS status.

Q: What are the key electrical differences between the original and substitute parts?

A: The primary differences are quiescent current (Iq) and input capacitance. The original 74ABT374CMTC has lower quiescent current (50 µA vs. 250 µA) and higher input capacitance (5 pF vs. 4.6 pF). Propagation delay is slightly higher in substitutes (6.6ns vs. 5ns at 5V, 50pF). These differences remain within the 74ABT logic family specifications and do not affect functional compatibility in standard applications.

Q: Is the 74ABT374CMTC still available for procurement?

A: The 74ABT374CMTC is classified as obsolete. Transition to active alternatives (SN74ABT374APWR, SN74ABT374APW, or SN74ABT374ADBR) is recommended for new designs and ongoing production to ensure supply chain continuity and manufacturer support.

Q: Can I use these parts interchangeably in my existing design?

A: SN74ABT374APWR and SN74ABT374APW are direct pin-for-pin and package-compatible replacements requiring no design changes. SN74ABT374ADBR requires PCB layout modification due to package differences but maintains electrical equivalence.