ATA6623C-TAPY LINbus Transceiver Equivalent & Substitute Parts

Part Overview

The ATA6623C-TAPY is a 1/1 LINbus transceiver IC manufactured by Microchip Technology in an 8-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a wide supply voltage range of 5V to 27V and is ROHS3 compliant with MSL 1 (unlimited moisture sensitivity).

Key Parameters

Parameter	Value
Manufacturer Part Number	ATA6623C-TAPY
Manufacturer	Microchip Technology
Category	Interface
Type	Transceiver
Protocol	LINbus
Number of Drivers/Receivers	1/1
Voltage - Supply	5V ~ 27V
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the ATA6623C-TAPY is determined by the following critical parameters:

Protocol compatibility: LINbus
Driver/Receiver configuration: 1/1
Package type: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Supply voltage range overlap
Product status: Active alternatives required

The substitute parts are grouped into two categories based on supply voltage specifications:

Category 1: Microchip MCP2025 Series (6V ~ 18V) These parts operate within a narrower voltage range than the original but maintain full LINbus protocol compatibility and identical package specifications. Available in both half-duplex and full configurations with multiple packaging options.

Category 2: onsemi NCV7428 Series (3.3V ~ 5V) These automotive-grade parts (AEC-Q100 qualified) operate at lower voltage ranges and include integrated protection features suitable for automotive applications.

Category 3: NXP TJA1028 Series (3.3V or 4.9V ~ 5.1V) These half-duplex transceivers operate at fixed or narrow voltage ranges with extended temperature ratings up to 150°C.

Parameter Comparison

Part Number	Manufacturer	Type	Duplex	Voltage Supply	Operating Temp	Package	Product Status	MSL
ATA6623C-TAPY	Microchip Technology	Transceiver	—	5V ~ 27V	—	8-SOIC	Obsolete	1
MCP2025-330E/SN	Microchip Technology	Transceiver	Half	6V ~ 18V	-40°C ~ 125°C	8-SOIC	Active	3
MCP2025-500E/SN	Microchip Technology	Transceiver	Half	6V ~ 18V	-40°C ~ 125°C	8-SOIC	Active	1
MCP2025T-330E/SN	Microchip Technology	Transceiver	Half	6V ~ 18V	-40°C ~ 125°C	8-SOIC	Active	1
MCP2025T-500E/SN	Microchip Technology	Transceiver	Half	6V ~ 18V	-40°C ~ 125°C	8-SOIC	Active	1
NCV7428D13R2G	onsemi	Transceiver	—	3.3V ~ 5V	-40°C ~ 125°C	8-SOIC	Active	2
NCV7428D15R2G	onsemi	Transceiver	—	3.3V ~ 5V	-40°C ~ 125°C	8-SOIC	Active	2
NCV7428D1L3R2G	onsemi	Transceiver	—	3.3V ~ 5V	-40°C ~ 125°C	8-SOIC	Active	2
NCV7428D1L5R2G	onsemi	Transceiver	—	3.3V ~ 5V	-40°C ~ 125°C	8-SOIC	Active	2
TJA1028T/3V3/20/1J	NXP USA Inc.	Transceiver	Half	3.3V	-40°C ~ 150°C	8-SOIC	Active	1
TJA1028T/5V0/10,11	NXP USA Inc.	Transceiver	Half	4.9V ~ 5.1V	-40°C ~ 150°C	8-SOIC	Active	1

Engineering Selection Recommendations

For systems operating within 6V to 18V range: The Microchip MCP2025 series (MCP2025-330E/SN, MCP2025-500E/SN, MCP2025T-330E/SN, MCP2025T-500E/SN) provides the closest functional alignment to the ATA6623C-TAPY. All variants are active products with ROHS3 compliance. Selection between tube and tape & reel packaging depends on procurement requirements. The MCP2025T variants with MSL 1 rating are preferred for applications with extended storage requirements.

For automotive applications or systems requiring AEC-Q100 qualification: The onsemi NCV7428 series (NCV7428D13R2G, NCV7428D15R2G, NCV7428D1L3R2G, NCV7428D1L5R2G) offers automotive-grade qualification with identical package specifications. These parts are suitable only for systems operating at 3.3V to 5V supply voltages. Packaging variants (cut tape, tape & reel) accommodate different assembly workflows.

For extended temperature operation (up to 150°C): The NXP TJA1028 series (TJA1028T/3V3/20/1J for 3.3V systems, TJA1028T/5V0/10,11 for 5V systems) provides the highest operating temperature rating. Selection is determined by system supply voltage specification.

For systems requiring the widest voltage range: The original ATA6623C-TAPY operates from 5V to 27V. No single substitute part maintains this full range. System redesign may be required to operate within the voltage ranges of available substitutes, or multiple part selections may be necessary for different voltage domains.

Frequently Asked Questions (FAQ)

Q: Can MCP2025 series parts directly replace the ATA6623C-TAPY? A: MCP2025 parts are functionally compatible for LINbus protocol and package form factor. However, the supply voltage range is limited to 6V ~ 18V compared to the original 5V ~ 27V specification. Verify your system operates within this narrower range before substitution.

Q: What is the difference between MCP2025-330E/SN and MCP2025T-330E/SN? A: Both parts are electrically identical. The primary difference is packaging: MCP2025-330E/SN is supplied in tube packaging, while MCP2025T-330E/SN is supplied in tape & reel format. The MSL rating differs (3 vs. 1), affecting storage life requirements.

Q: Are onsemi NCV7428 parts suitable for non-automotive applications? A: Yes. The AEC-Q100 automotive qualification indicates enhanced reliability and testing. These parts function in non-automotive systems operating within the 3.3V ~ 5V supply range. The automotive qualification does not restrict use in other applications.

Q: What does MSL rating mean for component selection? A: MSL (Moisture Sensitivity Level) indicates how long a component can be stored in standard conditions before requiring baking. MSL 1 (unlimited) allows indefinite storage. MSL 2 (1 year) and MSL 3 (168 hours) require time-limited storage. Select based on your procurement and assembly timelines.

Q: Can I use TJA1028T/3V3/20/1J in a 5V system? A: No. This part is rated for 3.3V supply only. Use TJA1028T/5V0/10,11 for 5V systems. Applying incorrect supply voltage will damage the component.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the original ATA6623C-TAPY specification.

Q: What is the difference between half-duplex and full-duplex transceiver configurations? A: The ATA6623C-TAPY does not specify duplex mode. MCP2025 and TJA1028 series are half-duplex (one-way communication at a time). NCV7428 series do not specify duplex mode. Verify your LINbus network topology supports the selected transceiver configuration.

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