74ABT657D,623 Equivalent & Substitute Parts

Part Overview

The 74ABT657D,623 is a non-inverting transceiver logic IC manufactured by NXP Semiconductors in the 74ABT series. This component features 1 element with 8 bits per element, 3-state output capability, and operates across a 4.5V to 5.5V supply voltage range. 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	74ABT657D,623
Manufacturer	NXP Semiconductors
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)
Package / Case	24-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 74ABT657D,623 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters (Must Match):

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)

Mechanical Parameters (Must Match):

Package / Case: 24-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

All substitute parts listed maintain identical electrical specifications and package dimensions, ensuring direct functional replacement in circuit designs. Substitutes are sourced from Texas Instruments, the primary manufacturer of the 74ABT series logic family.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (High/Low)	Supply Voltage	Temp Range	Package	Product Status	Inventory
74ABT657D,623	NXP Semiconductors	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Obsolete	890 Pcs
SN74ABT657ADW	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	902 Pcs
SN74ABT2952ADWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	735 Pcs
SN74ABT543ADWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	11100 Pcs
SN74ABT646ADWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	2788 Pcs
SN74ABT646DWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	899 Pcs
SN74ABT652ADWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Active	4823 Pcs
SN74ABT652DWR	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	24-SOIC	Discontinued at DiGi Electronics	1014 Pcs

Engineering Selection Recommendations

Primary Recommendation: SN74ABT657ADW

The SN74ABT657ADW from Texas Instruments is the direct functional equivalent of the 74ABT657D,623. This part maintains active product status, ensuring long-term availability and manufacturer support. It carries identical electrical and mechanical specifications with ROHS3 compliance and MSL 1 rating. Current inventory of 902 units supports immediate procurement.

Secondary Recommendations (Parametric Equivalents):

SN74ABT543ADWR, SN74ABT646ADWR, and SN74ABT652ADWR are parametric equivalents meeting all electrical and mechanical requirements. These parts maintain active status and offer higher inventory levels (11100, 2788, and 4823 units respectively), providing supply chain flexibility. All are ROHS3 compliant with MSL 1 rating.

Avoid:

SN74ABT652DWR is discontinued at DiGi Electronics and should not be selected for new designs despite meeting technical specifications.

All recommended substitutes are manufactured by Texas Instruments within the 74ABT logic family, ensuring consistency with the original design intent and industry-standard performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ABT543ADWR as a direct replacement for 74ABT657D,623?

A: Yes. The SN74ABT543ADWR meets all critical electrical parameters (1 element, 8 bits per element, 3-state output, 32mA/64mA output current, 4.5V–5.5V supply, -40°C to 85°C operating range) and uses the identical 24-SOIC package. It is a parametric equivalent suitable for direct substitution.

Q: What is the difference between SN74ABT657ADW and SN74ABT2952ADWR?

A: Both parts are parametrically equivalent with identical electrical specifications and 24-SOIC packaging. The primary difference is the base product number (74ABT657 vs. 74ABT2952) and packaging format (Tube vs. Tape & Reel). Selection depends on procurement and assembly requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—SN74ABT657ADW, SN74ABT2952ADWR, SN74ABT543ADWR, SN74ABT646ADWR, SN74ABT646DWR, SN74ABT652ADWR, and SN74ABT652DWR—are ROHS3 compliant with MSL 1 (Unlimited) rating.

Q: Why is the 74ABT657D,623 obsolete?

A: The original NXP part is classified as obsolete. Texas Instruments continues to manufacture equivalent parts in the 74ABT series, providing ongoing design support and component availability.

Q: Can I mix different substitute parts in the same design?

A: Yes. All substitute parts maintain identical electrical specifications and 24-SOIC packaging, allowing interchangeable use within the same circuit design.

Q: Which substitute has the best inventory availability?

A: SN74ABT543ADWR offers the highest inventory level at 11100 units, followed by SN74ABT652ADWR at 4823 units. Both are active products suitable for high-volume procurement.

Q: Does packaging format (Tube vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only procurement and assembly logistics. Electrical performance and functional characteristics remain identical regardless of packaging format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message