SN74ABT863DWR Equivalent & Substitute Parts

Part Overview

The SN74ABT863DWR is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments, designed for 3-state output applications in 24-SOIC surface mount packaging. This device operates across a 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity level rating.

Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility permits functional alternatives within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	9
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	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ABT863DWR is determined by the following critical parameters:

Primary Substitution Criteria:

Manufacturer: Texas Instruments (74ABT series logic family)
Logic Type: Transceiver, Non-Inverting
Output Type: 3-State
Package / Case: 24-SOIC (0.295", 7.50mm Width)
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Current - Output High / Low: 32mA / 64mA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Functional Variation Allowed:

Number of Bits per Element: The SN74ABT863DWR operates with 9 bits per element. Substitute parts with 8 bits per element (SN74ABT2952ADWR, SN74ABT543ADWR, SN74ABT646ADWR, SN74ABT646DWR, SN74ABT652ADWR, SN74ABT652DWR) are functionally compatible within the 74ABT transceiver family when bit-width reduction is acceptable for the application.

All substitute parts maintain identical electrical performance characteristics, thermal ratings, compliance certifications, and physical packaging specifications as the primary part.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements	Bits per Element	Output Type	Current High/Low (mA)	Supply Voltage	Temp Range (°C)	Package	Status	Inventory (Pcs)
SN74ABT863DWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	9	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	4740
SN74ABT2952ADWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	735
SN74ABT543ADWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	11100
SN74ABT646ADWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	2788
SN74ABT646DWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	899
SN74ABT652ADWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Active	4823
SN74ABT652DWR	Texas Instruments	74ABT	Transceiver, Non-Inverting	1	8	3-State	32 / 64	4.5 ~ 5.5V	-40 ~ 85	24-SOIC	Discontinued at DiGi Electronics	1014

Engineering Selection Recommendations

Active Production Parts (Recommended Priority):

SN74ABT543ADWR offers the highest inventory availability (11,100 pcs) among all substitute options while maintaining full electrical and thermal equivalence. This part is suitable for applications where 8-bit operation is functionally acceptable.

SN74ABT652ADWR provides the second-highest inventory level (4,823 pcs) with active production status and identical electrical specifications.

SN74ABT646ADWR and SN74ABT2952ADWR are available in moderate quantities (2,788 pcs and 735 pcs respectively) and maintain full compliance with all electrical and environmental specifications.

Discontinued Status:

SN74ABT652DWR is discontinued at DiGi Electronics but remains available in limited inventory (1,014 pcs). This part should be considered only when other active production alternatives are unavailable, as future procurement may be restricted.

Compliance Assurance:

All listed substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level rating (MSL 1), and identical operating temperature specifications (-40°C to 85°C). No additional qualification or testing is required from a regulatory or environmental standpoint.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT863DWR be directly replaced with an 8-bit substitute part?

A: Yes, when the application design permits operation with 8 bits per element instead of 9 bits. All substitute parts maintain identical electrical performance, supply voltage range (4.5V ~ 5.5V), output current specifications (32mA / 64mA), and thermal ratings (-40°C ~ 85°C). Physical package dimensions and pinout compatibility must be verified against your specific PCB design.

Q: What is the difference between SN74ABT646ADWR and SN74ABT646DWR?

A: Both parts share the same base product number (74ABT646) and are electrically identical. The primary difference is packaging designation: ADWR indicates Tape & Reel packaging, while DWR indicates standard packaging. Inventory levels differ (2,788 pcs vs. 899 pcs respectively). Selection depends on your procurement and assembly requirements.

Q: Why is SN74ABT652DWR marked as discontinued?

A: SN74ABT652DWR is discontinued at DiGi Electronics, indicating it is no longer actively produced or distributed through this channel. However, limited inventory (1,014 pcs) remains available. For long-term production designs, SN74ABT652ADWR (active production status) is the recommended alternative.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) rating, identical to the primary SN74ABT863DWR part. No additional environmental or regulatory qualification is required.

Q: Which substitute part offers the best inventory availability?

A: SN74ABT543ADWR provides the highest inventory level at 11,100 pcs in active production status, followed by SN74ABT652ADWR at 4,823 pcs. Both parts are suitable for immediate procurement and long-term supply chain planning.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message