MAX4377FASA-T Equivalent & Substitute Parts

Part Overview

The MAX4377FASA-T is a dual-channel current sense amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for precision current measurement applications. This integrated circuit operates across a wide supply voltage range of 3V to 28V and delivers a slew rate of 10V/µs with a -3dB bandwidth of 2 MHz. The device is packaged in an 8-SOIC surface mount configuration.

The MAX4377FASA-T carries an Obsolete product status. Locating equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this current sense amplifier topology.

Substiute Parts

MAX4377FASA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 669MAX4377FASA-T Datasheet

Current PartRFQ

MAX4377FASA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3940MAX4377FASA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4377FASA-T is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Amplifier Type: Current Sense
• Number of Circuits: 2 channels
• Slew Rate: 10 V/µs
• -3dB Bandwidth: 2 MHz
• Input Bias Current: 120 µA
• Supply Current: 1 mA per channel

Electrical Parameters:

• Supply Voltage Range: 3V to 28V minimum and maximum
• Operating Temperature: -40°C to 125°C

Mechanical & Packaging Parameters:

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

Compliance Parameters:

• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

Only parts matching all specified parameters across these categories qualify as direct substitutes for the MAX4377FASA-T.

Parameter Comparison

Engineering Selection Recommendations

The MAX4377FASA+T serves as a direct substitute for the MAX4377FASA-T based on complete electrical, mechanical, and functional parameter equivalence. Both devices are manufactured by Analog Devices Inc./Maxim Integrated and share identical specifications across all critical performance metrics.

The primary distinction between these parts is product lifecycle status. The MAX4377FASA-T is classified as Obsolete, while the MAX4377FASA+T maintains Active product status. This status difference reflects manufacturing availability and long-term support considerations.

Both parts maintain ROHS3 compliance and carry identical moisture sensitivity ratings. Supply voltage ranges, operating temperature specifications, and package configurations are identical. The dual-channel current sense architecture, slew rate, bandwidth, and bias current specifications are equivalent across both devices.

For new designs or production continuity, the MAX4377FASA+T is the appropriate selection due to its Active product status and higher inventory availability (3900 pieces versus 610 pieces). Existing designs utilizing the MAX4377FASA-T can transition to the MAX4377FASA+T without circuit modification, as all electrical and mechanical parameters are identical.

Frequently Asked Questions (FAQ)

Q: Can the MAX4377FASA+T replace the MAX4377FASA-T in existing designs?

A: Yes. Both devices are electrically and mechanically identical. All functional parameters, supply voltage ranges, operating temperature specifications, and package configurations match exactly. Direct substitution is possible without circuit redesign.

Q: What is the difference between MAX4377FASA-T and MAX4377FASA+T?

A: The devices are functionally equivalent. The primary difference is product status: MAX4377FASA-T is Obsolete, while MAX4377FASA+T is Active. The MAX4377FASA+T also has significantly higher inventory availability.

Q: Are both parts RoHS compliant?

A: Yes. Both the MAX4377FASA-T and MAX4377FASA+T are ROHS3 compliant with identical moisture sensitivity ratings of MSL 1 (Unlimited).

Q: What is the package configuration for these devices?

A: Both parts use an 8-SOIC surface mount package with a width of 0.154 inches (3.90mm). The package footprint and pinout are identical.

Q: What are the key electrical specifications that define substitution eligibility?

A: Substitution is based on matching: dual-channel current sense amplifier topology, 10 V/µs slew rate, 2 MHz -3dB bandwidth, 120 µA input bias current, 1 mA supply current per channel, and 3V to 28V supply voltage range.

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

A: Yes. Both devices operate across the identical temperature range of -40°C to 125°C.