SN74ALS534ANS Equivalent & Substitute Parts

Part Overview

The SN74ALS534ANS is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit parallel data storage and transfer applications. This component features tri-state, inverted outputs and operates at a clock frequency of 35 MHz with positive edge triggering. The part is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

SN74ALS534ANS

Texas InstrumentsIn Stock: 669SN74ALS534ANS Datasheet

Current PartRFQ

SN74ALS534ANSR

Texas InstrumentsIn Stock: 3934SN74ALS534ANSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS534ANS is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Type: D-Type flip-flop architecture
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: Tri-State, Inverted configuration
• Trigger Type: Positive Edge

Electrical Parameters:

• Clock Frequency: 35 MHz minimum
• Max Propagation Delay: 16 ns @ 5V, 50pF
• Voltage - Supply: 4.5V ~ 5.5V range
• Current - Output High, Low: 2.6 mA, 24 mA
• Operating Temperature: 0°C ~ 70°C (TA)

Physical & Compliance Parameters:

• Package / Case: 20-SOIC (0.209", 5.30mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

A substitute part must match all functional, electrical, and physical parameters listed above. Variations in quiescent current (Iq) are permitted when all other specifications remain identical, as this parameter does not affect circuit functionality or compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS534ANSR is a direct functional equivalent to the SN74ALS534ANS. Both components are manufactured by Texas Instruments and share identical electrical specifications, functional architecture, and physical packaging. The primary distinction is product status: the SN74ALS534ANS is designated Last Time Buy, while the SN74ALS534ANSR maintains Active status with higher inventory availability (3,872 pieces versus 649 pieces).

The SN74ALS534ANSR demonstrates improved quiescent current performance (19 mA versus 31 mA), resulting in lower power consumption during idle states. This improvement does not alter circuit functionality or compatibility. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring environmental and regulatory compatibility.

For new designs or production continuity, the SN74ALS534ANSR is the appropriate selection due to its Active product status and superior supply chain availability. Existing designs utilizing the SN74ALS534ANS can transition to the SN74ALS534ANSR without circuit modification, as all functional and electrical parameters remain equivalent.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS534ANSR directly replace the SN74ALS534ANS in existing designs?

A: Yes. The SN74ALS534ANSR is a direct substitute. All functional parameters, electrical specifications, and physical packaging are identical. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and quiescent current. The SN74ALS534ANS is Last Time Buy with 31 mA Iq, while the SN74ALS534ANSR is Active with 19 mA Iq. The lower quiescent current in the ANSR variant reduces power consumption during standby operation.

Q: Are both parts available in the same package?

A: Yes. Both the SN74ALS534ANS and SN74ALS534ANSR are packaged in 20-SOIC (0.209", 5.30mm Width) surface mount configuration. PCB footprints and assembly processes are identical.

Q: Do these parts have the same electrical performance?

A: Yes. Clock frequency (35 MHz), propagation delay (16 ns @ 5V, 50pF), output current ratings (2.6 mA high, 24 mA low), and supply voltage range (4.5V ~ 5.5V) are identical across both parts.

Q: Why is the SN74ALS534ANSR recommended over the SN74ALS534ANS?

A: The SN74ALS534ANSR is recommended due to Active product status, ensuring long-term availability and supply chain reliability. Additionally, the lower quiescent current (19 mA) provides improved power efficiency compared to the Last Time Buy SN74ALS534ANS (31 mA).

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74ALS534ANS and SN74ALS534ANSR are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for these components?

A: Both parts operate across 0°C to 70°C (TA). This range is identical for both the SN74ALS534ANS and SN74ALS534ANSR.