MAX4378TAUD Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The MAX4378TAUD is a current sense amplifier IC manufactured by Analog Devices Inc./Maxim Integrated, designed for precision current measurement applications. This linear amplifier integrates four independent current sense circuits in a compact 14-TSSOP surface mount package. The device operates across a wide supply voltage range of 3V to 28V and maintains performance across industrial temperature ranges from -40°C to 125°C.

The MAX4378TAUD is classified as obsolete in current product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications utilizing this current sense amplifier topology.

Substiute Parts

MAX4378TAUD

Analog Devices Inc./Maxim IntegratedIn Stock: 3063MAX4378TAUD Datasheet

Current PartRFQ

MAX4378TAUD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1325MAX4378TAUD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4378TAUD is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Amplifier Type: Current Sense
• Number of Circuits: 4 independent channels
• Slew Rate: 10V/µs
• -3dB Bandwidth: 2 MHz
• Current - Input Bias: 120 µA
• Current - Supply: 1mA per channel
• Voltage - Supply Span: 3V minimum to 28V maximum
• Operating Temperature Range: -40°C to 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part MAX4378TAUD+ meets all mandatory matching parameters and is therefore classified as a direct functional equivalent. The primary distinction between the main part and its substitute is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MAX4378TAUD+

The MAX4378TAUD+ is the direct substitute for the obsolete MAX4378TAUD. Both parts share identical electrical specifications, thermal performance characteristics, and mechanical package dimensions. The MAX4378TAUD+ maintains active product status with Analog Devices Inc./Maxim Integrated, ensuring ongoing availability and technical support.

Compliance and Certification Alignment: Both the main part and substitute are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level remains at MSL 1 (Unlimited) for both variants, indicating no special handling requirements during storage or assembly.

Packaging Consideration: The MAX4378TAUD+ is supplied in tube packaging, whereas the original MAX4378TAUD specification does not specify a packaging configuration. This difference does not affect electrical performance or mechanical compatibility in PCB assembly operations. Tube packaging is standard for surface mount components and is compatible with automated pick-and-place assembly equipment.

Supply Chain Status: The MAX4378TAUD+ maintains current inventory of 1232 pieces in new original condition, providing immediate availability for production requirements. The obsolete status of the original MAX4378TAUD necessitates transition to the active substitute part for ongoing design support and component procurement.

Frequently Asked Questions (FAQ)

Q: Can MAX4378TAUD+ be used as a direct replacement for MAX4378TAUD in existing designs?

A: Yes. The MAX4378TAUD+ is electrically and mechanically identical to the MAX4378TAUD across all specified parameters. No circuit modifications or PCB layout changes are required. Both parts operate identically within the specified voltage range of 3V to 28V and temperature range of -40°C to 125°C.

Q: What is the difference between MAX4378TAUD and MAX4378TAUD+?

A: The primary differences are product status and packaging configuration. The MAX4378TAUD is obsolete, while MAX4378TAUD+ maintains active status. The MAX4378TAUD+ is supplied in tube packaging. All electrical and thermal specifications are identical.

Q: Are there any compatibility issues with the 14-TSSOP package?

A: No. Both parts use the identical 14-TSSOP package with 0.173" width and 4.40mm dimensions. Pin assignments, lead spacing, and solder pad layouts are identical. Standard surface mount assembly processes apply without modification.

Q: Does the tube packaging of MAX4378TAUD+ affect assembly compatibility?

A: No. Tube packaging is compatible with standard automated pick-and-place assembly equipment used in surface mount manufacturing. Tube format does not impact electrical performance or mechanical fit on the PCB.

Q: What compliance certifications apply to both parts?

A: Both MAX4378TAUD and MAX4378TAUD+ are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is MSL 1 (Unlimited) for both parts, requiring no special environmental controls during storage or handling.

Q: Is the MAX4378TAUD+ suitable for industrial temperature applications?

A: Yes. The MAX4378TAUD+ operates across the full industrial temperature range of -40°C to 125°C, identical to the original MAX4378TAUD. Performance specifications remain constant across this entire temperature range.

Q: What is the current consumption of the MAX4378TAUD+ per channel?

A: The supply current is 1mA per channel. With four independent circuits, total supply current is 4mA under nominal operating conditions.