MAX4232AKA-T Equivalent & Substitute Parts

Part Overview

The MAX4232AKA-T is a CMOS dual-channel operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in a SOT-23-8 surface mount package. This device features rail-to-rail output capability and is designed for low-power, general-purpose amplification applications requiring dual-channel configurations.

The MAX4232AKA-T is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems currently utilizing this component.

Substiute Parts

MAX4232AKA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 5334MAX4232AKA-T Datasheet

Current PartRFQ

MAX4232AKA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 18302MAX4232AKA+T Datasheet

DirectRFQ

OPA2374AIDCNR

Texas InstrumentsIn Stock: 26424OPA2374AIDCNR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4232AKA-T is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier Type: CMOS
• Number of Circuits: 2
• Output Type: Rail-to-Rail
• Package / Case: SOT-23-8
• Mounting Type: Surface Mount
• Voltage - Supply Span: 2.7 V (Min) to 5.5 V (Max)
• Operating Temperature Range: -40°C to 125°C

Secondary Compatibility Parameters:

• Slew Rate: 10 V/µs (minimum acceptable)
• Gain Bandwidth Product: 10 MHz (minimum acceptable)
• Current - Input Bias: 1 pA (maximum acceptable)
• Voltage - Input Offset: 850 µV (maximum acceptable)
• Current - Supply: 1.2 mA x2 Channels (maximum acceptable)
• Current - Output / Channel: 200 mA (minimum acceptable)

Substitute parts must satisfy all primary criteria and maintain compatibility within the secondary parameters to ensure functional equivalence in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

MAX4232AKA+T (Direct Equivalent)

The MAX4232AKA+T is the direct equivalent to the MAX4232AKA-T. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical specifications across all measured parameters. The primary distinction is product status: MAX4232AKA+T is classified as Active, whereas MAX4232AKA-T is Obsolete. The MAX4232AKA+T is available in Cut Tape (CT) and Digi-Reel® packaging formats with significantly higher inventory availability (18,226 pcs). This part is suitable for direct replacement in all applications currently using the MAX4232AKA-T.

OPA2374AIDCNR (Functional Substitute)

The OPA2374AIDCNR, manufactured by Texas Instruments, is a functional substitute that meets all primary substitution criteria. This part maintains identical package configuration (SOT-23-8), supply voltage range (2.7 V to 5.5 V), operating temperature range (-40°C to 125°C), and dual-channel CMOS rail-to-rail architecture.

Parameter deviations from the MAX4232AKA-T are as follows:

• Slew Rate: 5 V/µs (versus 10 V/µs)
• Gain Bandwidth Product: 6.5 MHz (versus 10 MHz)
• Current - Input Bias: 0.5 pA (improved, versus 1 pA)
• Voltage - Input Offset: 1 mV (versus 850 µV)
• Current - Supply: 585 µA x2 Channels (improved, versus 1.2 mA)
• Current - Output / Channel: 5 mA (versus 200 mA)
• Moisture Sensitivity Level (MSL): 2 (1 Year) (versus 1 Unlimited)

The OPA2374AIDCNR is classified as Active with high inventory availability (26,400 pcs). Selection of this part requires circuit-level analysis to confirm that reduced slew rate, gain bandwidth product, and output current specifications do not compromise system performance. The improved input bias current and reduced supply current may provide operational benefits in power-sensitive applications.

Frequently Asked Questions (FAQ)

Q1: Can MAX4232AKA+T be used as a direct replacement for MAX4232AKA-T?

A: Yes. The MAX4232AKA+T is electrically and mechanically identical to the MAX4232AKA-T. Both parts share the same base product number (MAX4232), identical electrical specifications, and SOT-23-8 package configuration. The primary difference is product status (Active versus Obsolete) and packaging format availability. Direct substitution is supported without circuit modification.

Q2: What are the key differences between MAX4232AKA-T and OPA2374AIDCNR?

A: Both parts are dual-channel CMOS rail-to-rail amplifiers in SOT-23-8 packages with identical supply voltage ranges and operating temperature specifications. The OPA2374AIDCNR has lower slew rate (5 V/µs versus 10 V/µs), lower gain bandwidth product (6.5 MHz versus 10 MHz), and significantly lower output current per channel (5 mA versus 200 mA). The OPA2374AIDCNR offers superior input bias current (0.5 pA versus 1 pA) and lower supply current consumption (585 µA versus 1.2 mA). Substitution requires verification that the reduced dynamic performance parameters are acceptable for the intended application.

Q3: Are all three parts (MAX4232AKA-T, MAX4232AKA+T, OPA2374AIDCNR) pin-compatible?

A: Yes. All three parts are housed in SOT-23-8 packages and maintain identical pin configurations for dual-channel CMOS amplifier operation. Physical and electrical pin compatibility is confirmed across all three devices.

Q4: What is the significance of the Moisture Sensitivity Level (MSL) difference between MAX4232AKA-T and OPA2374AIDCNR?

A: MAX4232AKA-T carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions on storage and handling. OPA2374AIDCNR carries MSL 2 (1 Year), requiring controlled storage conditions and limiting shelf life to one year from the date of manufacture under specified humidity conditions. This difference affects component procurement, inventory management, and handling procedures.

Q5: Which substitute part should be selected for new designs?

A: For new designs, MAX4232AKA+T is the preferred selection due to its Active product status, identical electrical specifications to the obsolete MAX4232AKA-T, and superior inventory availability. OPA2374AIDCNR is suitable for new designs only when the reduced slew rate, gain bandwidth product, and output current specifications are compatible with circuit requirements and when the lower supply current consumption provides operational advantages.

Q6: Are there RoHS and REACH compliance differences among the three parts?

A: All three parts are ROHS3 Compliant. MAX4232AKA-T does not specify REACH status in the provided data. Both MAX4232AKA+T and OPA2374AIDCNR are listed as REACH Unaffected, indicating compliance with REACH regulations.