74AC374MTCX Equivalent & Substitute Parts

Part Overview

The 74AC374MTCX is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit positive edge triggering in a 20-TSSOP surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity.

Substiute Parts

74AC374MTCX

onsemiIn Stock: 215874AC374MTCX Datasheet

Current PartRFQ

MC74AC374DTR2G

onsemiIn Stock: 3574MC74AC374DTR2G Datasheet

DirectRFQ

SN74AC374PW

Texas InstrumentsIn Stock: 1181SN74AC374PW Datasheet

DirectRFQ

74AHC374PW,118

Nexperia USA Inc.In Stock: 84374AHC374PW,118 Datasheet

SimilarRFQ

SN74AC374DBR

Texas InstrumentsIn Stock: 16210SN74AC374DBR Datasheet

SimilarRFQ

SN74AC374PWR

Texas InstrumentsIn Stock: 1951SN74AC374PWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74AC374MTCX are classified based on the following substitution criteria:

Direct Manufacturer Substitutes maintain identical electrical and mechanical specifications:

• Same base product number (74AC374)
• Identical package type (20-TSSOP)
• Matching clock frequency (155 MHz)
• Matching propagation delay (9.5 ns @ 5V, 50pF)
• Matching output current ratings (24 mA / 24 mA)
• Matching supply voltage range (2V ~ 6V)
• Matching trigger type (Positive Edge)
• Matching output type (Tri-State, Non-Inverted)

Similar Substitutes share the same functional characteristics but differ in specific parameters:

• Alternative series designation (74AHC instead of 74AC)
• Different package variant (20-SSOP vs. 20-TSSOP)
• Reduced clock frequency or altered propagation delay
• Modified output current or supply voltage specifications

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

MC74AC374DTR2G and SN74AC374PWR are the primary direct substitutes for the 74AC374MTCX. Both maintain the 74AC series designation, identical clock frequency (155 MHz), propagation delay (9.5 ns), and output current specifications (24 mA). MC74AC374DTR2G is available in active product status with higher inventory levels (3480 pcs). SN74AC374PWR is also active with ROHS3 compliance certification.

For Package-Compatible Replacement:

SN74AC374DBR provides electrical equivalence but uses a 20-SSOP package (0.209", 5.30mm width) instead of 20-TSSOP (0.173", 4.40mm width). This substitution requires PCB layout modification due to package dimensional differences. This part is active with substantial inventory (16100 pcs).

For Series-Level Substitution:

74AHC374PW,118 (Nexperia) operates within the same functional category but represents a different logic family (74AHC vs. 74AC). This part exhibits reduced clock frequency (120 MHz vs. 155 MHz), increased propagation delay (10.1 ns vs. 9.5 ns), and reduced output current (8 mA vs. 24 mA). Supply voltage range is narrower (2V ~ 5.5V vs. 2V ~ 6V). This substitution is suitable only when performance margins permit the specification changes.

Compliance Considerations:

All active substitute parts carry ROHS3 compliance certification. The obsolete status of 74AC374MTCX necessitates transition to an active product. MC74AC374DTR2G and SN74AC374PWR are recommended for new designs requiring direct electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can SN74AC374DBR replace 74AC374MTCX directly on the PCB?

A: SN74AC374DBR is electrically equivalent but uses a different package (20-SSOP vs. 20-TSSOP). The package footprints are not interchangeable. PCB layout modification is required. Pin count and function remain identical.

Q: What is the difference between MC74AC374DTR2G and SN74AC374PWR?

A: Both are direct electrical equivalents with identical clock frequency, propagation delay, and output current. The primary difference is manufacturer (onsemi vs. Texas Instruments) and quiescent current specification (8 µA vs. 4 µA). Both are active products with ROHS3 compliance.

Q: Is 74AHC374PW,118 a suitable replacement for 74AC374MTCX?

A: 74AHC374PW,118 is functionally similar but operates at reduced performance levels. Clock frequency is 120 MHz (vs. 155 MHz), propagation delay is 10.1 ns (vs. 9.5 ns), and output current is 8 mA (vs. 24 mA). This substitution is valid only when circuit timing margins accommodate these specification reductions.

Q: Why is the quiescent current different among substitutes?

A: Quiescent current variation reflects manufacturing process improvements and design refinements across product generations. MC74AC374DTR2G (8 µA) and SN74AC374PWR/SN74AC374PW (4 µA) represent more recent implementations compared to the obsolete 74AC374MTCX (40 µA). Lower quiescent current reduces power consumption without affecting functional performance.

Q: What packaging options are available for 74AC374 logic?

A: The 74AC374 base product is available in 20-TSSOP (0.173", 4.40mm width) and 20-SSOP (0.209", 5.30mm width) packages. Both are surface mount configurations. Package selection depends on PCB layout constraints and manufacturing capabilities.

Q: Are all substitute parts REACH compliant?

A: All parts listed carry REACH Unaffected status, indicating compliance with REACH regulations. ROHS3 compliance is confirmed for all active substitute products.