MAX4501CSA Equivalent & Substitute Parts

Part Overview

The MAX4501CSA is a single-circuit SPST-NO (Single Pole Single Throw - Normally Open) IC switch manufactured by Analog Devices Inc./Maxim Integrated. This component operates as a 1:1 multiplexer/demultiplexer with a maximum on-state resistance of 250Ohm and is housed in an 8-SOIC surface mount package. The device is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MAX4501CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 2078MAX4501CSA Datasheet

Current PartRFQ

TS12A4514D

Texas InstrumentsIn Stock: 3114TS12A4514D Datasheet

MFR RecommendedRFQ

TS12A4514DR

Texas InstrumentsIn Stock: 16843TS12A4514DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4501CSA is based on the following critical parameters that define functional compatibility:

Primary Substitution Criteria:

• Switch circuit topology: SPST - NO configuration
• Multiplexer/demultiplexer ratio: 1:1
• Number of circuits: 1
• Package type: 8-SOIC form factor with identical physical dimensions (0.154", 3.90mm Width)
• Mounting type: Surface Mount

Secondary Compatibility Parameters:

• Supply voltage range must encompass or exceed the original 2V ~ 12V specification
• On-state resistance must be equal to or lower than 250Ohm to maintain signal integrity
• Switch timing characteristics (Ton/Toff) must be compatible with system requirements
• Leakage current specification of 1nA or lower

The substitute parts identified (TS12A4514D and TS12A4514DR) meet all primary criteria and demonstrate improved electrical performance in secondary parameters, making them direct functional replacements for the obsolete MAX4501CSA.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MAX4501CSA is classified as obsolete, while both TS12A4514D and TS12A4514DR are active products from Texas Instruments. Active product status ensures continued availability, technical support, and manufacturing consistency.

Compliance and Certification: Both substitute parts are ROHS3 compliant, addressing modern regulatory requirements that the original MAX4501CSA does not meet. Both parts maintain REACH Unaffected and EAR99 ECCN classifications consistent with the original component.

Packaging Selection:

• TS12A4514D is supplied in Tube packaging, suitable for lower-volume applications and manual assembly processes.
• TS12A4514DR is supplied in Tape & Reel (TR) format, optimized for automated pick-and-place assembly and higher-volume production environments.

Electrical Performance: The substitute parts demonstrate superior electrical characteristics, including significantly lower on-state resistance (10Ohm versus 250Ohm), extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), and faster turn-off time (45ns versus 50ns). These improvements provide enhanced signal fidelity and broader application flexibility.

Frequently Asked Questions (FAQ)

Q: Can TS12A4514D and TS12A4514DR be used interchangeably with MAX4501CSA?

A: Both Texas Instruments parts are direct functional substitutes for the MAX4501CSA. They share identical switch topology (SPST-NO), circuit configuration (1:1), and package form factor (8-SOIC). The primary difference between TS12A4514D and TS12A4514DR is packaging format: Tube versus Tape & Reel. Selection depends on assembly methodology and volume requirements.

Q: What are the key electrical differences between MAX4501CSA and the substitute parts?

A: The most significant difference is on-state resistance: MAX4501CSA specifies 250Ohm maximum, while both TS12A4514D and TS12A4514DR specify 10Ohm maximum. This 25-fold reduction in resistance improves signal integrity and reduces power dissipation. Additionally, the substitute parts operate across a wider temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and feature faster turn-off time (45ns versus 50ns).

Q: Are there supply voltage compatibility concerns?

A: The MAX4501CSA operates from 2V ~ 12V, while substitute parts operate from 2.7V ~ 12V. The substitute parts require a minimum of 0.7V higher supply voltage. In applications operating below 2.7V, the MAX4501CSA specification must be retained or alternative solutions evaluated.

Q: What is the significance of the different packaging options?

A: TS12A4514D (Tube) is appropriate for manual assembly, prototyping, and low-volume production. TS12A4514DR (Tape & Reel) is designed for automated assembly equipment and high-volume manufacturing. Both contain identical die and electrical specifications; packaging selection is driven by production methodology.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both TS12A4514D and TS12A4514DR are ROHS3 compliant, addressing modern environmental and regulatory standards. The original MAX4501CSA is RoHS non-compliant. For applications subject to RoHS requirements, the substitute parts are necessary.

Q: How do charge injection specifications compare?

A: MAX4501CSA specifies 1pC charge injection, while substitute parts specify -11.5pC. The negative value indicates opposite polarity. In precision analog switching applications, this difference may require circuit-level evaluation to ensure signal fidelity is maintained.