74ACT374SJ Equivalent & Substitute Parts

Part Overview

The 74ACT374SJ is a single-element D-type flip-flop logic integrated circuit with 8-bit parallel data storage capability. This component features tri-state, non-inverted outputs and operates at positive edge triggering. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain functional equivalence while offering improved availability and product status options.

Substiute Parts

74ACT374SJ

onsemiIn Stock: 80374ACT374SJ Datasheet

Current PartRFQ

SN74ACT374NSR

Texas InstrumentsIn Stock: 2308SN74ACT374NSR Datasheet

DirectRFQ

CD74ACT374M

Harris CorporationIn Stock: 1946CD74ACT374M Datasheet

SimilarRFQ

CD74ACT374M96

Texas InstrumentsIn Stock: 2372CD74ACT374M96 Datasheet

SimilarRFQ

SN74ACT374DW

Texas InstrumentsIn Stock: 3404SN74ACT374DW Datasheet

SimilarRFQ

SN74ACT374DWR

Texas InstrumentsIn Stock: 2450SN74ACT374DWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT374SJ are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Compatibility Parameters:

• Logic function (D-Type Flip Flop, 1 Element, 8 Bit)
• Output type (Tri-State, Non-Inverted)
• Trigger type (Positive Edge)
• Supply voltage range (4.5V ~ 5.5V)
• Output current capability (24mA minimum)
• Package family (20-SOIC)

Direct Substitutes maintain all critical electrical parameters and package dimensions within tolerance. These parts are functionally interchangeable without circuit modification.

Similar Substitutes maintain core logic function and electrical characteristics but may have variations in propagation delay, clock frequency, or package width. These parts require verification of timing margins in the target application.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Preferred):

SN74ACT374NSR (Texas Instruments) is the primary direct substitute. This part maintains identical electrical specifications to the 74ACT374SJ, including clock frequency of 160 MHz and propagation delay of 10ns. The part is in active production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Package dimensions are identical at 20-SOIC (0.209", 5.30mm Width).

SN74ACT374DWR (Texas Instruments) is an alternative direct substitute with active product status. This part offers improved propagation delay of 8.5ns at 5V, 50pF, providing superior timing performance. The package width is 0.295" (7.50mm), which may require PCB layout verification for pin-to-pin compatibility. ROHS3 compliance is confirmed.

Similar Substitutes (Conditional Use):

CD74ACT374M96 (Texas Instruments) is suitable for applications where extended temperature range (-55°C ~ 125°C) is required. This part operates at 110 MHz clock frequency with 11.2ns propagation delay, representing reduced performance compared to the main part. ROHS3 compliance is confirmed. The package width is 0.295" (7.50mm).

CD74ACT374M (Harris Corporation) is obsolete and not recommended for new designs. While it maintains functional equivalence, the obsolete status and RoHS non-compliance present supply chain and regulatory risks.

SN74ACT374DW (Texas Instruments) carries Last Time Buy status, indicating limited future availability. This part should be used only when other active alternatives are unavailable.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT374NSR be used as a direct replacement for 74ACT374SJ?

A: Yes. SN74ACT374NSR maintains identical electrical specifications including 160 MHz clock frequency, 10ns propagation delay, and 24mA output current. Package dimensions are identical at 20-SOIC (0.209", 5.30mm Width). The part is in active production with ROHS3 compliance.

Q: What is the difference between SN74ACT374DW and SN74ACT374DWR?

A: Both parts are functionally equivalent with identical electrical specifications. SN74ACT374DWR is supplied in Cut Tape (CT) & Digi-Reel packaging, while SN74ACT374DW is supplied in standard packaging. SN74ACT374DWR is in active status; SN74ACT374DW is Last Time Buy.

Q: Can CD74ACT374M96 replace 74ACT374SJ in all applications?

A: CD74ACT374M96 maintains core logic function and electrical compatibility but operates at reduced clock frequency (110 MHz versus 160 MHz) and has increased propagation delay (11.2ns versus 10ns). Applications with timing-critical requirements must verify that these reduced performance parameters are acceptable. The extended operating temperature range (-55°C ~ 125°C) may be beneficial for harsh environment applications.

Q: Are there package dimension differences between substitute parts?

A: Yes. The 74ACT374SJ uses 20-SOIC (0.209", 5.30mm Width). SN74ACT374NSR maintains this dimension. SN74ACT374DW, SN74ACT374DWR, CD74ACT374M, and CD74ACT374M96 use 20-SOIC (0.295", 7.50mm Width). PCB layout verification is required when switching between these package widths.

Q: Which substitute part has the best compliance status?

A: SN74ACT374NSR, SN74ACT374DW, SN74ACT374DWR, and CD74ACT374M96 all carry ROHS3 compliance. CD74ACT374M is RoHS non-compliant and should not be used in applications requiring RoHS certification.

Q: What is the quiescent current difference between the main part and substitutes?

A: The 74ACT374SJ draws 40 µA quiescent current. SN74ACT374NSR, SN74ACT374DW, and SN74ACT374DWR draw 4 µA. CD74ACT374M and CD74ACT374M96 draw 8 µA. Lower quiescent current in substitute parts reduces power consumption in standby conditions.