MAX436CSD+ Equivalent & Substitute Parts

Part Overview

The MAX436CSD+ is a transconductance amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for linear signal processing applications. This device integrates one transconductance amplifier circuit in a 14-SOIC surface mount package. The MAX436CSD+ is classified as an obsolete product, necessitating identification of functionally compatible alternatives for new designs or production continuity. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting current manufacturing and compliance standards.

Substiute Parts

MAX436CSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 985MAX436CSD+ Datasheet

Current PartRFQ

LMH6503MAX/NOPB

National SemiconductorIn Stock: 3655LMH6503MAX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX436CSD+ is based on the following critical parameters that define functional equivalence:

Package Compatibility: Both the main part and substitute must use the 14-SOIC surface mount package to ensure direct PCB compatibility without layout modifications.

Circuit Configuration: The substitute must provide a single amplifier circuit to match the MAX436CSD+ configuration.

Electrical Performance Range: Substitute parts must operate within the specified supply voltage range and maintain compatible slew rate and bandwidth characteristics for the intended application.

Compliance Standards: Substitute parts must meet current RoHS and REACH compliance requirements, with MSL ratings suitable for standard manufacturing processes.

The LMH6503MAX/NOPB is identified as a manufacturer-recommended substitute based on these criteria. While the LMH6503MAX/NOPB is classified as a Variable Gain Amplifier rather than a Transconductance Amplifier, it shares the same 14-SOIC package footprint and operates within compatible electrical parameter ranges for applications requiring single-channel amplification in the specified package.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MAX436CSD+ is classified as obsolete, making long-term supply continuity uncertain. The LMH6503MAX/NOPB maintains active product status with established manufacturing and distribution channels, supporting sustained availability for production requirements.

Compliance and Certification: Both parts meet current regulatory standards. The MAX436CSD+ is ROHS3 compliant with MSL 1 rating. The LMH6503MAX/NOPB maintains equivalent compliance posture suitable for standard manufacturing environments.

Package Footprint: Both devices use identical 14-SOIC packaging, eliminating the need for PCB redesign or layout modifications during substitution.

Supply Voltage Compatibility: The LMH6503MAX/NOPB operates across a wider supply voltage range (5V to 12V) compared to the MAX436CSD+ (9.5V to 10.5V). Applications using the MAX436CSD+ within its specified 9.5V to 10.5V range remain compatible with the substitute part.

Electrical Performance Differences: The LMH6503MAX/NOPB exhibits higher slew rate (1800V/µs versus 850V/µs) and higher input bias current (11µA versus 1µA). The -3dB bandwidth of the LMH6503MAX/NOPB is lower (135MHz versus 200MHz). These differences require circuit-level evaluation to confirm functional equivalence for specific applications.

Frequently Asked Questions (FAQ)

Q: Can the LMH6503MAX/NOPB directly replace the MAX436CSD+ without PCB modifications?

A: Yes, both devices use the 14-SOIC surface mount package with identical footprint dimensions (0.154" width, 3.90mm). Direct PCB substitution is possible without layout changes. However, circuit performance differences must be evaluated for the specific application.

Q: What are the key electrical differences between these parts?

A: The LMH6503MAX/NOPB has higher slew rate (1800V/µs vs. 850V/µs), lower -3dB bandwidth (135MHz vs. 200MHz), and higher input bias current (11µA vs. 1µA). The substitute operates across a wider supply voltage range (5V-12V vs. 9.5V-10.5V).

Q: Is the LMH6503MAX/NOPB suitable for applications requiring the MAX436CSD+ transconductance amplifier characteristics?

A: The LMH6503MAX/NOPB is classified as a Variable Gain Amplifier, not a Transconductance Amplifier. Functional equivalence depends on the specific circuit requirements and application topology. Circuit-level analysis is necessary to confirm compatibility.

Q: What is the operating temperature range difference?

A: The MAX436CSD+ operates from 0°C to 70°C, while the LMH6503MAX/NOPB operates from -40°C to 85°C. The substitute part supports extended temperature operation, providing broader environmental compatibility.

Q: Are both parts RoHS compliant?

A: The MAX436CSD+ is ROHS3 compliant. The LMH6503MAX/NOPB maintains current compliance standards suitable for modern manufacturing environments.

Q: What is the moisture sensitivity level (MSL) for the substitute part?

A: The MAX436CSD+ has MSL 1 (Unlimited). Specific MSL information for the LMH6503MAX/NOPB is not provided in the available parameters.