MAX4051EEE+ Equivalent & Substitute Parts

Part Overview

The MAX4051EEE+ is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated. This single-circuit switch device features 100Ohm on-state resistance and operates across a wide supply voltage range (2V to 16V single supply, or ±2.7V to ±8V dual supply). The component is actively produced and widely used in signal routing, data acquisition, and analog switching applications where low on-state resistance and fast switching times are required. Finding equivalent or substitute parts becomes necessary when addressing supply chain constraints, inventory availability, or specific application requirements that may benefit from alternative electrical or mechanical characteristics.

Substiute Parts

MAX4051EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2110MAX4051EEE+ Datasheet

Current PartRFQ

MAX4051EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2110MAX4051EEE+ Datasheet

DirectRFQ

BU4051BCFV-E2

Rohm SemiconductorIn Stock: 3259BU4051BCFV-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4051EEE+ is determined by the following critical parameters:

Primary Substitution Criteria:

• Multiplexer/Demultiplexer circuit configuration: 8:1
• Number of circuits: 1
• Surface mount package type compatible with 16-pin SSOP/LSSOP footprints
• Operating temperature range: -40°C ~ 85°C (TA)
• RoHS3 compliance and MSL Level 1 rating

Secondary Compatibility Factors:

• On-state resistance (Max): Must not exceed application requirements; lower values provide improved signal integrity
• Supply voltage ranges: Single supply (2V ~ 16V) or dual supply (±2.7V ~ 8V) capability
• Leakage current and crosstalk specifications: Critical for low-signal applications
• Switch timing characteristics: Relevant for high-frequency multiplexing applications

The BU4051BCFV-E2 from Rohm Semiconductor qualifies as a functional substitute based on matching 8:1 multiplexer configuration, single-circuit topology, compatible surface-mount packaging (16-LSSOP), and identical operating temperature range. However, electrical parameter differences exist and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

MAX4051EEE+ Selection: Choose the MAX4051EEE+ when applications require the lowest on-state resistance (100Ohm maximum), minimal leakage current (1nA maximum), lowest channel capacitance (2pF), and dual supply voltage capability (±2.7V to ±8V). This device is suitable for precision analog signal routing, low-noise data acquisition systems, and applications demanding tight channel-to-channel resistance matching (12Ohm maximum). The component maintains active production status with established supply chain availability.

BU4051BCFV-E2 Selection: The BU4051BCFV-E2 serves as a functional alternative when higher on-state resistance (160Ohm maximum) is acceptable within application specifications. This substitute is appropriate for general-purpose multiplexing applications where the extended single-supply voltage range (3V to 18V) provides operational flexibility. The device is actively produced and available in tape & reel packaging. Note that the BU4051BCFV-E2 exhibits higher leakage current (300nA maximum) and increased channel capacitance (10pF), which may impact performance in sensitive analog signal applications.

Both devices maintain ROHS3 compliance, MSL Level 1 rating, and identical operating temperature ranges (-40°C to 85°C), ensuring regulatory and environmental compatibility across equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can the BU4051BCFV-E2 directly replace the MAX4051EEE+ in existing designs?

A: Direct replacement is possible only if the application tolerates the BU4051BCFV-E2's higher on-state resistance (160Ohm vs. 100Ohm), increased leakage current (300nA vs. 1nA), and higher channel capacitance (10pF vs. 2pF). PCB layout and footprint differences must also be evaluated, as the BU4051BCFV-E2 uses a 16-LSSOP package (4.40mm width) compared to the MAX4051EEE+ 16-SSOP package (3.90mm width).

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

A: The MAX4051EEE+ provides superior analog signal integrity through lower on-state resistance, minimal leakage current, and reduced channel capacitance. The BU4051BCFV-E2 offers extended single-supply voltage operation (up to 18V) but sacrifices precision performance metrics. Neither device supports dual supply operation in the BU4051BCFV-E2.

Q: Are both devices suitable for high-frequency multiplexing applications?

A: The MAX4051EEE+ is optimized for high-frequency applications with specified switch times (175ns Ton, 150ns Toff) and low charge injection (2pC). The BU4051BCFV-E2 does not provide switch timing specifications, making it less suitable for applications requiring predictable high-speed switching characteristics.

Q: Do packaging differences affect PCB design?

A: Yes. The MAX4051EEE+ uses 16-SSOP (3.90mm width) while the BU4051BCFV-E2 uses 16-LSSOP (4.40mm width). Footprint compatibility must be verified before substitution. Both are surface-mount devices with identical pin counts and similar pinout configurations.

Q: Are both parts compliant with current regulatory standards?

A: Both the MAX4051EEE+ and BU4051BCFV-E2 are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity) ratings. Both operate across the -40°C to 85°C temperature range, ensuring equivalent environmental and regulatory compliance.