MAX4378HAUD Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The MAX4378HAUD is a current sense amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device functions as a 4-circuit current sense amplifier in a 14-TSSOP surface mount package. The MAX4378HAUD is classified as obsolete product status, which necessitates identification of equivalent substitute components for ongoing design support and procurement requirements. Current sense amplifiers are essential for applications requiring precise current measurement and monitoring across multiple channels.

Substiute Parts

MAX4378HAUD

Analog Devices Inc./Maxim IntegratedIn Stock: 983MAX4378HAUD Datasheet

Current PartRFQ

MAX4378HAUD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1297MAX4378HAUD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4378HAUD is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier Type: Current Sense (4-circuit configuration)
• Slew Rate: 10 V/µs
• -3dB Bandwidth: 2 MHz
• Current - Input Bias: 120 µA
• Current - Supply: 1 mA per channel (4 channels total)
• Voltage - Supply Span: 3 V to 28 V
• Operating Temperature Range: -40°C to 125°C

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Supplier Device Package: 14-TSSOP

The substitute part MAX4378HAUD+ maintains identical electrical and mechanical specifications to the main part, with differences limited to product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

MAX4378HAUD+ as Direct Substitute:

The MAX4378HAUD+ is a direct functional and mechanical equivalent to the MAX4378HAUD. Both components share identical electrical specifications across all critical parameters including amplifier type, circuit count, slew rate, bandwidth, bias current, supply current, supply voltage range, and operating temperature range. Both are packaged in 14-TSSOP surface mount configuration with identical pin assignments and footprint requirements.

Differentiation Factors:

The primary distinction between these components is product lifecycle status. The MAX4378HAUD carries obsolete designation, while MAX4378HAUD+ maintains active product status. This status difference reflects manufacturing availability and long-term support considerations.

Compliance Considerations:

The MAX4378HAUD+ achieves ROHS3 compliance, whereas the MAX4378HAUD is RoHS non-compliant. For applications subject to RoHS regulatory requirements, MAX4378HAUD+ is the appropriate selection. Both components maintain REACH Unaffected status and EAR99 export classification.

Packaging Format:

MAX4378HAUD+ is supplied in Tube packaging format, which differs from the main part specification. This packaging difference does not affect electrical or mechanical compatibility but may influence procurement and handling procedures.

Frequently Asked Questions (FAQ)

Q: Are MAX4378HAUD and MAX4378HAUD+ pin-compatible?

A: Yes. Both components utilize identical 14-TSSOP package configuration with matching pin assignments. Direct PCB footprint compatibility is confirmed.

Q: What is the functional difference between MAX4378HAUD and MAX4378HAUD+?

A: No functional difference exists. Both devices provide identical current sense amplifier performance with 4 circuits, 10 V/µs slew rate, 2 MHz bandwidth, and 3 V to 28 V supply voltage range.

Q: Why is MAX4378HAUD marked as obsolete?

A: Obsolete designation indicates the component has reached end-of-life status from the manufacturer. MAX4378HAUD+ represents the active product continuation with equivalent specifications.

Q: Can MAX4378HAUD+ replace MAX4378HAUD in existing designs?

A: Yes. Electrical and mechanical specifications are identical. Direct substitution is supported without design modification.

Q: What is the significance of RoHS3 compliance on MAX4378HAUD+?

A: ROHS3 compliance indicates conformance to Restriction of Hazardous Substances Directive requirements. Applications requiring RoHS certification must use MAX4378HAUD+ rather than the non-compliant MAX4378HAUD.

Q: Are there inventory differences between these parts?

A: Yes. MAX4378HAUD inventory is 891 pieces, while MAX4378HAUD+ inventory is 1214 pieces. Availability should be confirmed with supplier for procurement planning.

Q: Does packaging format affect electrical performance?

A: No. Tube packaging on MAX4378HAUD+ does not alter electrical characteristics or performance. Packaging format affects only handling, storage, and procurement logistics.

Q: What supply voltage range is supported by both components?

A: Both MAX4378HAUD and MAX4378HAUD+ operate across 3 V to 28 V supply voltage span, supporting diverse application requirements.

Q: Is the operating temperature range identical for both parts?

A: Yes. Both components operate across -40°C to 125°C temperature range, providing equivalent thermal performance specifications.