SN74ACT534PW Equivalent & Substitute Parts

Part Overview

The SN74ACT534PW is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit capacity and tri-state inverted output configuration. This device operates at a maximum clock frequency of 100 MHz with a propagation delay of 11.5ns at 5V with 50pF load. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring D-Type flip-flop functionality with compatible electrical and mechanical specifications.

Substiute Parts

SN74ACT534PW

Texas InstrumentsIn Stock: 1883SN74ACT534PW Datasheet

Current PartRFQ

SN74ACT534PWR

Texas InstrumentsIn Stock: 1134SN74ACT534PWR Datasheet

MFR RecommendedRFQ

MC74ACT374DTR2G

onsemiIn Stock: 3521MC74ACT374DTR2G Datasheet

MFR RecommendedRFQ

MC74ACT574DTR2G

onsemiIn Stock: 3575MC74ACT574DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT534PW are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Package Type: 20-TSSOP form factor with identical 0.173" width and 4.40mm dimensions
• Logic Family: 74ACT series ensuring voltage supply compatibility (4.5V ~ 5.5V)
• Functional Type: D-Type flip-flop with 1 element and 8-bit configuration
• Trigger Mechanism: Positive edge triggering
• Output Configuration: Tri-state output capability
• Operating Temperature Range: -40°C ~ 85°C
• Compliance Standards: ROHS3 compliant, MSL 1 rating

The substitute parts identified are grouped into two categories based on output polarity:

Category 1 - Inverted Output (Direct Functional Equivalent): SN74ACT534PWR maintains identical output inversion characteristics as the main part, differing only in packaging format (Tape & Reel versus Tube).

Category 2 - Non-Inverted Output (Functional Alternative): MC74ACT374DTR2G and MC74ACT574DTR2G provide non-inverted tri-state output configurations. These parts maintain core D-Type flip-flop functionality with compatible electrical parameters but differ in output polarity and certain performance metrics.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT534PWR is the primary recommended substitute for the SN74ACT534PW. Both parts are manufactured by Texas Instruments, maintain identical electrical specifications, and differ only in packaging format (Tape & Reel versus Tube). The SN74ACT534PWR carries Active product status, ensuring continued availability and manufacturing support. This part provides direct functional equivalence with no design modifications required.

MC74ACT374DTR2G and MC74ACT574DTR2G are functional alternatives manufactured by onsemi. These parts maintain compatibility with the 74ACT logic family, identical supply voltage range, and equivalent output drive capability. However, both parts feature non-inverted tri-state output configuration, requiring circuit-level evaluation to confirm compatibility with existing designs that depend on inverted output logic. MC74ACT374DTR2G offers enhanced clock frequency performance at 160 MHz compared to the 100 MHz specification of the main part. All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and moisture sensitivity compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT534PWR be used as a direct replacement for SN74ACT534PW?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, operating temperature range, and 20-TSSOP package configuration. The only difference is packaging format: SN74ACT534PW is supplied in Tube format while SN74ACT534PWR is supplied in Tape & Reel format. No circuit modifications are required.

Q: What is the key difference between the SN74ACT534 and MC74ACT374/MC74ACT574 series?

A: The primary difference is output polarity. SN74ACT534 provides inverted tri-state output, while MC74ACT374 and MC74ACT574 provide non-inverted tri-state output. Both configurations maintain the same 8-bit D-Type flip-flop functionality and 20-TSSOP package. Output polarity compatibility must be verified at the circuit design level before substitution.

Q: Are there differences in quiescent current between substitute parts?

A: Yes. SN74ACT534PW and SN74ACT534PWR specify 4 µA quiescent current, while MC74ACT374DTR2G and MC74ACT574DTR2G specify 8 µA. This difference may impact power consumption in applications with high device density or strict power budgets.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage requirements.

Q: What is the significance of the Last Time Buy status for SN74ACT534PW?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part. Existing inventory is available for purchase, but no future manufacturing runs are planned. SN74ACT534PWR (Active status) or alternative parts should be considered for new designs or long-term supply requirements.

Q: Can MC74ACT374DTR2G be used if higher clock frequency is required?

A: MC74ACT374DTR2G operates at 160 MHz maximum clock frequency compared to 100 MHz for the main part, providing enhanced performance capability. However, output polarity difference (non-inverted versus inverted) must be evaluated for circuit compatibility before substitution.