74ABT2541CSCX Equivalent & Substitute Parts

Part Overview

The 74ABT2541CSCX is a non-inverting buffer logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability. Housed in a 20-SOIC package, this component operates across a 4.5V to 5.5V supply voltage range with output drive capabilities of 32mA high and 15mA low. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74ABT2541CSCX

onsemiIn Stock: 222574ABT2541CSCX Datasheet

Current PartRFQ

SN74ABT241ADWR

Texas InstrumentsIn Stock: 2238SN74ABT241ADWR Datasheet

SimilarRFQ

SN74ABT541BDW

Texas InstrumentsIn Stock: 3280SN74ABT541BDW Datasheet

SimilarRFQ

SN74ABT541BDWR

Texas InstrumentsIn Stock: 3961SN74ABT541BDWR Datasheet

SimilarRFQ

SN74ABT541BNS

Texas InstrumentsIn Stock: 1161SN74ABT541BNS Datasheet

SimilarRFQ

SN74ABT541BNSR

Texas InstrumentsIn Stock: 6537SN74ABT541BNSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ABT2541CSCX is determined by the following critical parameters:

Primary Substitution Criteria:

• Logic type: Buffer, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package type: 20-SOIC form factor

Secondary Considerations:

• Output current drive capability (minimum 32mA high, 15mA low)
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts are grouped into two categories based on package dimensions:

Group 1 - Direct Package Match (20-SOIC, 0.295" width): SN74ABT541BDW, SN74ABT541BDWR. These parts maintain identical package dimensions and pinout compatibility with the original 74ABT2541CSCX.

Group 2 - Alternate Package (20-SO, 0.209" width): SN74ABT541BNS, SN74ABT541BNSR. These parts provide functional equivalence with different package body width, requiring PCB layout verification.

Non-Equivalent Alternative: SN74ABT241ADWR differs in element and bit configuration (2 elements, 4 bits per element) and is listed for reference only; it does not provide direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitutes (Direct Replacement):

SN74ABT541BDWR and SN74ABT541BDW are the preferred alternatives to the 74ABT2541CSCX. Both parts are manufactured by Texas Instruments, maintain active product status, and provide identical pinout and package dimensions (20-SOIC, 0.295" width). Both are ROHS3 compliant. SN74ABT541BDWR is supplied in Cut Tape and Digi-Reel packaging with 3858 units in stock, while SN74ABT541BDW is supplied in Tube packaging with 3229 units in stock. The increased output low current (64mA versus 15mA) provides enhanced drive capability without compromising circuit compatibility.

Secondary Substitutes (Package Variant):

SN74ABT541BNS and SN74ABT541BNSR provide functional equivalence with a narrower package body (20-SO, 0.209" width versus 0.295"). These parts are suitable only when PCB layout accommodates the reduced package width. SN74ABT541BNSR is supplied in Tape & Reel with 6480 units in stock, offering the highest inventory availability among all alternatives.

Non-Recommended:

SN74ABT241ADWR is not suitable as a direct replacement due to different element and bit configuration (2 elements, 4 bits per element versus 1 element, 8 bits per element). This part is listed for reference only and would require circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT541BDWR directly replace the 74ABT2541CSCX without PCB modification?

A: Yes. SN74ABT541BDWR maintains identical pinout, package type (20-SOIC), and package dimensions (0.295" width). No PCB layout changes are required. The part is pin-compatible and functionally equivalent for all specified operating parameters.

Q: What is the difference between SN74ABT541BDW and SN74ABT541BDWR?

A: Both parts are electrically identical. The difference is packaging format: SN74ABT541BDW is supplied in Tube, while SN74ABT541BDWR is supplied in Cut Tape and Digi-Reel. Selection depends on assembly process requirements and inventory management preferences.

Q: Why do the substitute parts have higher output low current (64mA) compared to the original (15mA)?

A: The increased output low current is a specification difference between manufacturers. This enhanced capability is backward compatible and does not create circuit incompatibility. Circuits designed for 15mA low output will operate correctly with 64mA capability.

Q: Can SN74ABT541BNS or SN74ABT541BNSR be used as substitutes?

A: These parts provide functional equivalence but use a narrower package body (20-SO, 0.209" width). They are suitable only if the PCB layout can accommodate the reduced package width. Verify footprint compatibility before selection.

Q: What is the significance of the ROHS3 compliance on the substitute parts?

A: ROHS3 compliance indicates the substitute parts meet current environmental and hazardous substance restrictions. The original 74ABT2541CSCX does not specify RoHS status. For new designs or production requiring RoHS compliance, the Texas Instruments alternatives are appropriate selections.

Q: Is the 74ABT2541CSCX still available for purchase?

A: The 74ABT2541CSCX is classified as obsolete. While 2126 units are reported in stock, long-term availability is not assured. Transition to an active substitute part is recommended for ongoing production and future designs.

Q: Why is SN74ABT241ADWR listed if it is not a direct substitute?

A: SN74ABT241ADWR is included for reference as it was listed in the original substitute list for the 74ABT2541CSCX. However, due to different element and bit configuration, it does not provide functional equivalence and is not recommended for direct replacement applications.