MAX4378TASD-T Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The MAX4378TASD-T is a current sense amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device features four independent current sensing circuits in a 14-SOIC surface mount package. The part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. Current sense amplifiers are essential components in power management, battery monitoring, and load detection applications where precise current measurement is required across multiple channels.

Substiute Parts

MAX4378TASD-T

Analog Devices Inc./Maxim IntegratedIn Stock: 1098MAX4378TASD-T Datasheet

Current PartRFQ

MAX4378TASD+T

Analog Devices Inc./Maxim IntegratedIn Stock: 12629MAX4378TASD+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Functional Parameters:

• Amplifier type must be current sense
• Number of circuits must equal 4
• Slew rate must be 10 V/µs
• -3dB bandwidth must be 2 MHz
• Input bias current must be 120 µA
• Supply current must be 1 mA per channel

Electrical Parameters:

• Supply voltage range must span minimum 3 V to maximum 28 V
• Operating temperature range must cover -40°C to 125°C

Physical & Compliance Parameters:

• Package must be 14-SOIC with 0.154" (3.90 mm) width
• Mounting type must be surface mount
• RoHS3 compliance required
• MSL rating must be 1 (Unlimited)

The substitute part MAX4378TASD+T meets all these criteria and is the direct equivalent for the obsolete MAX4378TASD-T.

Parameter Comparison

Engineering Selection Recommendations

The MAX4378TASD+T is the direct functional and physical equivalent of the MAX4378TASD-T. Both parts share identical electrical specifications, package dimensions, and compliance certifications. The primary distinction is product status: the MAX4378TASD-T is obsolete while the MAX4378TASD+T is active.

For new designs and production continuity, the MAX4378TASD+T is the appropriate selection. This substitute maintains full compatibility with existing PCB layouts, schematic designs, and firmware implementations. Both parts are ROHS3 compliant and carry MSL rating 1, indicating no moisture sensitivity restrictions during storage and handling.

The availability of 12,600 pieces of MAX4378TASD+T in stock compared to 1,036 pieces of the obsolete variant further supports transition to the active equivalent for supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can MAX4378TASD+T be used as a direct replacement for MAX4378TASD-T?

A: Yes. The MAX4378TASD+T is a direct equivalent. All electrical parameters, package specifications, and compliance certifications are identical. No circuit modifications or PCB redesign is required.

Q: What is the difference between MAX4378TASD-T and MAX4378TASD+T?

A: The parts are electrically and mechanically identical. The difference lies in the product status designation: MAX4378TASD-T is obsolete, while MAX4378TASD+T is active. The suffix notation (+T versus -T) reflects manufacturing and distribution tracking by Analog Devices Inc./Maxim Integrated.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both parts use the 14-SOIC package with 0.154" (3.90 mm) width. PCB layouts, land patterns, and assembly processes are identical.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is determined by matching: amplifier type (current sense), number of circuits (4), slew rate (10 V/µs), bandwidth (2 MHz), input bias current (120 µA), supply current (1 mA per channel), supply voltage range (3 V to 28 V), operating temperature (-40°C to 125°C), package type (14-SOIC), and compliance certifications (ROHS3, MSL 1).

Q: Is the MAX4378TASD+T available in sufficient quantity?

A: Yes. Current inventory shows 12,600 pieces of MAX4378TASD+T in stock, providing adequate supply for production requirements.

Q: Do both parts require the same handling and storage conditions?

A: Yes. Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard ESD precautions and normal storage conditions apply to both variants.