TJA1044VTZ CANbus Transceiver Half Duplex - Equivalent & Substitute Parts

Part Overview

The TJA1044VTZ is an active, automotive-grade CANbus transceiver IC in 8-SOIC surface mount packaging manufactured by NXP USA Inc. This half-duplex transceiver supports 1/1 driver/receiver configuration with a maximum data rate of 5 Mbps and operates across the automotive temperature range of -40°C to 150°C. The part is AEC-Q100 qualified and ROHS3 compliant, making it suitable for automotive and industrial applications requiring reliable CAN bus communication. Equivalent substitute parts are available to address inventory constraints or supply chain requirements while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer	NXP USA Inc.
Category	Interface
Type	Transceiver
Protocol	CANbus
Number of Drivers/Receivers	1/1
Duplex Mode	Half
Data Rate	5 Mbps
Receiver Hysteresis	300 mV
Supply Voltage	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q100
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TJA1044VTZ is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain identical for a part to qualify as a direct substitute:

Protocol: CANbus
Number of Drivers/Receivers: 1/1
Duplex Mode: Half
Data Rate: 5 Mbps
Receiver Hysteresis: 300 mV
Supply Voltage Range: 4.75V ~ 5.25V
Operating Temperature Range: -40°C ~ 150°C (TJ)
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Product Status: Active
RoHS Status: ROHS3 Compliant
MSL Rating: 1 (Unlimited)

All three substitute parts (TJA1044T,118; TJA1044T/1Z; TJA1044VT/3Z) meet these criteria and are manufactured by NXP USA Inc. Parts TJA1044VT/3Z and the main part TJA1044VTZ both carry automotive grade designation and AEC-Q100 qualification. Part TJA1044T,118 and TJA1044T/1Z do not specify automotive grade or AEC-Q100 qualification in the provided data but maintain identical electrical and mechanical specifications.

Parameter Comparison

Parameter	TJA1044VTZ	TJA1044T,118	TJA1044T/1Z	TJA1044VT/3Z
Manufacturer	NXP USA Inc.	NXP USA Inc.	NXP USA Inc.	NXP USA Inc.
Type	Transceiver	Transceiver	Transceiver	Transceiver
Protocol	CANbus	CANbus	CANbus	CANbus
Drivers/Receivers	1/1	1/1	1/1	1/1
Duplex	Half	Half	Half	Half
Data Rate	5 Mbps	5 Mbps	5 Mbps	5 Mbps
Receiver Hysteresis	300 mV	300 mV	300 mV	300 mV
Supply Voltage	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	Automotive	Not specified	Not specified	Automotive
Qualification	AEC-Q100	Not specified	Not specified	AEC-Q100

Engineering Selection Recommendations

All four parts maintain identical electrical and mechanical specifications and are manufactured by NXP USA Inc. with active product status. Selection between TJA1044VTZ and its substitutes should be based on the following criteria:

For automotive applications requiring AEC-Q100 qualification, TJA1044VTZ and TJA1044VT/3Z are the appropriate selections, as both carry automotive grade designation and AEC-Q100 qualification.

For non-automotive applications or where automotive qualification is not a requirement, TJA1044T,118 and TJA1044T/1Z are functionally equivalent alternatives with identical electrical performance and packaging.

All parts are ROHS3 compliant and carry MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can TJA1044T,118 or TJA1044T/1Z be used in automotive applications requiring AEC-Q100 qualification?

A: No. TJA1044T,118 and TJA1044T/1Z do not carry AEC-Q100 qualification or automotive grade designation. For automotive applications with AEC-Q100 requirements, use TJA1044VTZ or TJA1044VT/3Z.

Q: Are all substitute parts pin-compatible with the TJA1044VTZ?

A: Yes. All substitute parts use the identical 8-SOIC (0.154", 3.90mm Width) package with surface mount configuration, ensuring direct pin compatibility and PCB layout compatibility.

Q: What is the difference between TJA1044VTZ and TJA1044VT/3Z?

A: Both parts are automotive-grade, AEC-Q100 qualified CANbus transceivers with identical electrical specifications and 8-SOIC packaging. The difference lies in packaging designation and supplier coding. Both are direct substitutes.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the application does not have specific automotive qualification or grade requirements. For designs already qualified with TJA1044VTZ, substitution with TJA1044T,118 or TJA1044T/1Z requires design review if AEC-Q100 compliance is a system requirement.

Q: What is the maximum data rate supported by all substitute parts?

A: All parts support a maximum CANbus data rate of 5 Mbps with half-duplex operation.

Q: Are there any differences in operating temperature range between the parts?

A: No. All parts operate across the identical temperature range of -40°C to 150°C (junction temperature).

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