74ABT652CSC Equivalent & Substitute Parts

Part Overview

The 74ABT652CSC is a non-inverting transceiver IC manufactured by onsemi, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ABT652CSC
Manufacturer	onsemi
Series	74ABT
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74ABT652CSC is determined by the following critical parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Current - Output High, Low: 32mA, 64mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Package / Case: 24-SOIC (0.295", 7.50mm Width)

Parts are grouped into two categories:

Direct Substitutes (Pin-Compatible, Identical Specifications): Parts with matching logic type, bit configuration, output characteristics, and electrical ratings. These include SN74ABT652ADWR, SN74ABT652DWR, and SN74ABT652ADW from Texas Instruments.

Parametric Equivalents (Functionally Compatible, Different Base Part Numbers): Parts with identical electrical and mechanical specifications but different base part numbers. These include SN74ABT543ADW, SN74ABT646ADW, SN74ABT646DW, and SN74ABT657ADW. These maintain full compatibility with the original design while offering alternative sourcing options.

Logic Variant (Inverting Configuration): SN74ABT651DW is included as a parametric equivalent but features inverting logic instead of non-inverting logic. This part is suitable only for applications where signal inversion is required or acceptable.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (High/Low)	Voltage Supply	Temp Range	Package	Product Status	RoHS Status
74ABT652CSC	onsemi	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Obsolete	Not Specified
SN74ABT652ADWR	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT652DWR	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74ABT652ADW	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT543ADW	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT646ADW	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT646DW	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT657ADW	Texas Instruments	Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant
SN74ABT651DW	Texas Instruments	Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

SN74ABT652ADWR and SN74ABT652ADW from Texas Instruments are the preferred substitutes. Both maintain identical electrical specifications and package configuration as the 74ABT652CSC. SN74ABT652ADWR is actively produced and available in Tape & Reel packaging, while SN74ABT652ADW is available in Tube packaging. Both are ROHS3 compliant and carry Active product status, ensuring long-term availability and supply chain stability.

Alternative Parametric Equivalents:

SN74ABT543ADW, SN74ABT646ADW, SN74ABT646DW, and SN74ABT657ADW are functionally equivalent alternatives with identical electrical and thermal specifications. These parts are suitable for applications where the specific base part number is not critical to design requirements. All are ROHS3 compliant with Active product status.

Inverting Logic Variant:

SN74ABT651DW is a parametric equivalent featuring inverting logic instead of non-inverting logic. This part is suitable only for designs requiring signal inversion or where logic polarity can be accommodated through circuit design modifications.

Avoid:

SN74ABT652DWR is discontinued at DiGi Electronics and should not be selected for new designs despite its Active status at other distributors. Prioritize parts with confirmed Active status and established supply channels.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74ABT652CSC with SN74ABT652ADWR?

A: Yes. SN74ABT652ADWR is a direct substitute with identical logic type, bit configuration, output characteristics, supply voltage, operating temperature range, and 24-SOIC package. Pin compatibility is maintained.

Q: What is the difference between SN74ABT652ADW and SN74ABT652ADWR?

A: Both parts are electrically and functionally identical. The primary difference is packaging: SN74ABT652ADWR is supplied in Tape & Reel format for automated assembly, while SN74ABT652ADW is supplied in Tube format for manual handling. Select based on assembly process requirements.

Q: Are SN74ABT543ADW and SN74ABT646ADW compatible with the original 74ABT652CSC design?

A: Yes. These parts are parametric equivalents with identical electrical specifications, output drive capability, supply voltage, temperature range, and package dimensions. They differ only in base part number designation. Compatibility depends on whether the specific part number is referenced in design documentation or procurement specifications.

Q: Why is SN74ABT651DW listed as a substitute if it has inverting logic?

A: SN74ABT651DW is included as a parametric equivalent because it matches all electrical and mechanical specifications except for logic polarity. It is suitable only for applications where inverting logic is required or where circuit design can accommodate signal inversion.

Q: What does ROHS3 compliance mean for these parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials. All Texas Instruments substitutes listed are ROHS3 compliant, meeting environmental and regulatory standards for modern electronics manufacturing.

Q: Is the 74ABT652CSC still available for purchase?

A: The 74ABT652CSC is classified as Obsolete. While limited inventory may exist through secondary distributors, primary manufacturers no longer produce this part. Direct substitutes from Texas Instruments are recommended for new designs and ongoing procurement.

Q: Can I use these substitutes in existing designs without circuit modifications?

A: Direct substitutes (SN74ABT652ADWR, SN74ABT652ADW) require no circuit modifications. Parametric equivalents with different base part numbers (SN74ABT543ADW, SN74ABT646ADW, SN74ABT657ADW) are electrically compatible but may require verification against specific design requirements. SN74ABT651DW requires circuit design review due to inverting logic.

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