74ACT74MTC Equivalent & Substitute Parts

Part Overview

The 74ACT74MTC is a dual D-type flip-flop logic integrated circuit manufactured by onsemi in 14-TSSOP surface mount packaging. This device provides two independent D-type flip-flops with set and reset functionality, operating at a maximum clock frequency of 210 MHz with 11ns propagation delay at 5V and 50pF load.

The 74ACT74MTC is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for systems utilizing this logic function.

Substiute Parts

74ACT74MTC

onsemiIn Stock: 149974ACT74MTC Datasheet

Current PartRFQ

MC74ACT74DTR2G

onsemiIn Stock: 10251MC74ACT74DTR2G Datasheet

DirectRFQ

SN74ACT74PW

Texas InstrumentsIn Stock: 3149SN74ACT74PW Datasheet

DirectRFQ

SN74ACT74PWR

Texas InstrumentsIn Stock: 3913SN74ACT74PWR Datasheet

DirectRFQ

SN74ACT74DBR

Texas InstrumentsIn Stock: 5163SN74ACT74DBR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT74MTC is determined by strict equivalence across the following critical parameters:

• Logic Function: Dual D-type flip-flop with set/reset capability
• Electrical Performance: 210 MHz clock frequency, 11ns propagation delay, 24mA output drive, 4.5V–5.5V supply voltage
• Trigger Behavior: Positive edge triggering
• Operating Temperature Range: -40°C to 85°C
• Packaging Form Factor: 14-pin surface mount package

Substitute parts are classified into two categories:

Direct Substitutes maintain identical package specifications (14-TSSOP, 0.173" width) and full electrical equivalence. These parts can replace the 74ACT74MTC without PCB layout modifications.

Similar Substitutes maintain electrical equivalence but differ in package form factor (14-SSOP, 0.209" width). These require PCB footprint verification before implementation.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Package - 14-TSSOP)

MC74ACT74DTR2G (onsemi) is the primary direct substitute. This part maintains active product status, identical electrical specifications, and 14-TSSOP packaging. It offers improved quiescent current (4 µA vs. 20 µA) and is available in higher inventory quantities (10,200 pcs).

SN74ACT74PWR (Texas Instruments) is an active direct substitute with identical 14-TSSOP packaging. It provides superior quiescent current performance (2 µA) and lower input capacitance (3 pF), with robust availability (3,866 pcs). This part is recommended for new designs requiring active product status and long-term supply assurance.

SN74ACT74PW (Texas Instruments) is a direct substitute with identical 14-TSSOP packaging but is discontinued at DiGi Electronics. While electrically equivalent and available in inventory (3,100 pcs), this part should be considered only for immediate replacement needs where supply continuity cannot be guaranteed.

Similar Substitute (Different Package - 14-SSOP)

SN74ACT74DBR (Texas Instruments) is an active substitute with identical electrical specifications but uses 14-SSOP packaging (0.209" width vs. 0.173" for TSSOP). This part requires PCB footprint verification and layout modification. It is suitable only when 14-TSSOP alternatives are unavailable and PCB redesign is feasible.

For new designs and production environments requiring long-term component availability, SN74ACT74PWR is the recommended substitute. For immediate replacement of obsolete 74ACT74MTC units, MC74ACT74DTR2G provides the most direct equivalence with active product status.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74ACT74MTC with MC74ACT74DTR2G on my PCB?

A: Yes. MC74ACT74DTR2G is a direct substitute with identical 14-TSSOP packaging (0.173", 4.40mm width), pin configuration, and electrical specifications. No PCB layout modifications are required.

Q: What is the difference between SN74ACT74PWR and SN74ACT74PW?

A: Both parts are electrically identical with 14-TSSOP packaging. SN74ACT74PWR is active product status with Cut Tape and Digi-Reel packaging. SN74ACT74PW is discontinued at DiGi Electronics and supplied in Tube packaging. SN74ACT74PWR is preferred for new applications.

Q: Why does SN74ACT74DBR have a different package designation?

A: SN74ACT74DBR uses 14-SSOP packaging (0.209", 5.30mm width) instead of 14-TSSOP (0.173", 4.40mm width). While electrically equivalent, the larger package footprint requires PCB design verification before substitution.

Q: Are all substitute parts RoHS compliant?

A: MC74ACT74DTR2G, SN74ACT74PW, SN74ACT74PWR, and SN74ACT74DBR are all