MAX4377TASA Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The MAX4377TASA is a dual-channel current sense amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for precision current measurement applications. This linear amplifier IC operates across a wide supply voltage range of 3V to 28V and features a 2 MHz bandwidth with 10V/µs slew rate. The device is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The MAX4377TASA is packaged in an 8-SOIC surface mount configuration and is currently available in inventory with 2000 pieces in stock.

Substiute Parts

MAX4377TASA

Analog Devices Inc./Maxim IntegratedIn Stock: 2044MAX4377TASA Datasheet

Current PartRFQ

MAX4377TASA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2327MAX4377TASA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4377TASA is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Amplifier type: Current Sense (dual-channel configuration)
• Slew rate: 10V/µs
• Bandwidth: 2 MHz
• Input bias current: 120 µA
• Supply current: 1mA per channel
• Supply voltage range: 3V to 28V
• Operating temperature: -40°C to 125°C

Mechanical & Packaging Specifications:

• Package type: 8-SOIC
• Package dimensions: 0.154" width (3.90mm)
• Mounting type: Surface Mount

Compliance & Status:

• Manufacturer: Analog Devices Inc./Maxim Integrated
• Base product number: MAX4377

The substitute part must maintain identical electrical performance across all specified parameters and be compatible with the 8-SOIC surface mount footprint. Packaging format (tube vs. other configurations) does not affect electrical substitutability but may impact procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MAX4377TASA is classified as obsolete, while the MAX4377TASA+ is active. For new designs and long-term production planning, the MAX4377TASA+ is the appropriate selection due to its active product status and continued manufacturer support.

Compliance & Regulatory Status: The MAX4377TASA+ achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must utilize the MAX4377TASA+. Both parts maintain REACH Unaffected status and EAR99 export classification.

Electrical & Mechanical Equivalence: The MAX4377TASA+ provides complete electrical and mechanical equivalence to the MAX4377TASA across all specified parameters. Pin configuration, package footprint, and performance characteristics are identical, enabling direct substitution in existing PCB designs without layout modifications.

Packaging & Procurement: The MAX4377TASA+ is supplied in tube packaging, which may differ from the original part's packaging format. This distinction affects procurement procedures and handling but does not impact electrical performance or PCB assembly compatibility.

Inventory & Availability: Both parts are available in stock. The MAX4377TASA+ offers higher inventory levels (2300 pieces) compared to the main part (2000 pieces), supporting sustained production requirements.

Frequently Asked Questions (FAQ)

Q: Can the MAX4377TASA+ be used as a direct replacement for the MAX4377TASA in existing designs?

A: Yes. The MAX4377TASA+ is electrically and mechanically equivalent to the MAX4377TASA. All electrical specifications, operating parameters, and package dimensions are identical. The parts are pin-compatible and footprint-compatible, enabling direct substitution without PCB redesign.

Q: What is the primary difference between the MAX4377TASA and MAX4377TASA+?

A: The primary differences are product status and regulatory compliance. The MAX4377TASA is obsolete and RoHS non-compliant, while the MAX4377TASA+ is active and ROHS3 compliant. Packaging format also differs (tube for the substitute). Electrical performance is identical.

Q: Why should I transition from MAX4377TASA to MAX4377TASA+?

A: Transition is necessary due to the obsolete status of the MAX4377TASA. The MAX4377TASA+ ensures long-term availability, manufacturer support, and compliance with current regulatory requirements including RoHS3. For applications requiring RoHS compliance, transition is mandatory.

Q: Are there any performance differences between these parts?

A: No. Both parts deliver identical electrical performance. Slew rate, bandwidth, supply voltage range, operating temperature, and all other electrical specifications are equivalent. Performance in current sensing applications is identical.

Q: What is the impact of the packaging format difference?

A: Packaging format (tube vs. other configurations) affects procurement, storage, and handling procedures but does not impact electrical performance or PCB assembly. The 8-SOIC package dimensions and surface mount compatibility remain unchanged.

Q: Is the MAX4377TASA+ suitable for high-temperature applications?

A: Yes. The MAX4377TASA+ operates across the full temperature range of -40°C to 125°C, identical to the main part. Both parts are suitable for applications requiring extended temperature operation within this range.

Q: What supply voltage range is supported by the MAX4377TASA+?

A: The MAX4377TASA+ operates with supply voltages from 3V to 28V, providing compatibility with both low-voltage and higher-voltage system designs. This range is identical to the main part.

Q: Are both parts available in stock?

A: Yes. The MAX4377TASA is available with 2000 pieces in stock, and the MAX4377TASA+ is available with 2300 pieces in stock. Both are new original parts.