MAX4378TASD Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The MAX4378TASD is a current sense amplifier integrated circuit featuring four independent sensing circuits in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design support and procurement planning. The MAX4378TASD operates across a wide supply voltage range of 3V to 28V and is suitable for applications requiring precision current measurement across multiple channels.

Substiute Parts

MAX4378TASD

Analog Devices Inc./Maxim IntegratedIn Stock: 3170MAX4378TASD Datasheet

Current PartRFQ

MAX4378TASD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2063MAX4378TASD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4378TASD is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier type: Current Sense
• Number of circuits: 4 independent channels
• Slew rate: 10V/µs
• -3dB bandwidth: 2 MHz
• Input bias current: 120 µA
• Supply current: 1mA per channel
• Supply voltage range: 3V to 28V minimum and maximum
• Operating temperature range: -40°C to 125°C

Mechanical Equivalence Criteria:

• Mounting type: Surface Mount
• Package type: 14-SOIC with 0.154" (3.90mm) width

The substitute part MAX4378TASD+ meets all electrical and mechanical parameters identically to the main part, with the distinction of active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Procurement:

The MAX4378TASD+ is the recommended substitute for the obsolete MAX4378TASD. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and provide identical electrical and mechanical performance across all specified parameters. The MAX4378TASD+ offers the following advantages:

• Active Product Status: The MAX4378TASD+ maintains active production status, ensuring long-term availability and supply chain stability compared to the obsolete MAX4378TASD.
• Regulatory Compliance: The MAX4378TASD+ is ROHS3 compliant, meeting current environmental and regulatory requirements. The original MAX4378TASD is RoHS non-compliant.
• Packaging: The MAX4378TASD+ is supplied in tube packaging, which is standard for production environments.

For Existing Designs:

Designs currently using the MAX4378TASD can be directly substituted with the MAX4378TASD+ without circuit modification, as all electrical specifications and pinout configurations are identical. The 14-SOIC package dimensions and thermal characteristics remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the MAX4378TASD+ be used as a direct replacement for the MAX4378TASD in existing circuit designs?

A: Yes. The MAX4378TASD+ is a direct substitute. All electrical parameters, including slew rate, bandwidth, supply voltage range, operating temperature range, and input bias current are identical. The 14-SOIC package footprint and pinout are unchanged, allowing direct PCB-level substitution without design modification.

Q: What is the primary reason for substituting the MAX4378TASD?

A: The MAX4378TASD is classified as obsolete. The MAX4378TASD+ is the active equivalent part from the same manufacturer, ensuring continued availability and compliance with current regulatory standards.

Q: Are there any differences in performance between the MAX4378TASD and MAX4378TASD+?

A: No. Both parts deliver identical electrical performance across all specified parameters: 4-channel current sense amplification, 10V/µs slew rate, 2 MHz bandwidth, 3V to 28V supply range, and -40°C to 125°C operating temperature.

Q: What is the difference in RoHS compliance between these parts?

A: The MAX4378TASD is RoHS non-compliant, while the MAX4378TASD+ is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the MAX4378TASD+ is the appropriate choice.

Q: Are the package dimensions identical between MAX4378TASD and MAX4378TASD+?

A: Yes. Both parts use the 14-SOIC package with 0.154" (3.90mm) width. PCB footprints and land patterns are identical, enabling direct substitution without layout changes.

Q: What is the difference in packaging between the two parts?

A: The MAX4378TASD packaging type is not specified in the available data. The MAX4378TASD+ is supplied in tube packaging, which is standard for surface mount components in production environments.

Q: Can the MAX4378TASD+ handle the same supply voltage range as the MAX4378TASD?

A: Yes. Both parts operate across the identical supply voltage range of 3V minimum to 28V maximum, supporting applications requiring wide input voltage tolerance.

Q: Are there any thermal or operating temperature differences?

A: No. Both parts operate across the identical temperature range of -40°C to 125°C, ensuring equivalent performance in industrial and extended temperature applications.