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MAX4051CSE-T Equivalent & Substitute Parts
Part Overview
The MAX4051CSE-T is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This component features 100Ohm on-state resistance and operates across single supply (2V to 16V) or dual supply (±2.7V to ±8V) configurations. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Multiplexer Configuration | 8:1 |
| On-State Resistance (Max) | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 12Ohm (Max) |
| Voltage - Supply, Single (V+) | 2V ~ 16V |
| Voltage - Supply, Dual (V±) | ±2.7V ~ 8V |
| Switch Time (Ton, Toff) | 175ns, 150ns |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 2pF, 2pF |
| Current - Leakage (IS(off)) (Max) | 1nA |
| Crosstalk | -90dB @ 100kHz |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4051CSE-T is determined by the following critical parameters:
- Multiplexer Configuration: Must be 8:1
- Package Type: Must be 16-SOIC with 0.154" (3.90mm) width for PCB compatibility
- On-State Resistance: Maximum 100Ohm to maintain signal integrity in the original circuit design
- Supply Voltage Compatibility: Must support the required single or dual supply voltage ranges
- Surface Mount Mounting Type: Required for automated assembly compatibility
Substitute parts are grouped into two categories:
Category 1 - Direct Equivalents (Maxim Integrated): Parts maintaining identical electrical specifications and packaging, differing only in product status or packaging format.
Category 2 - Functional Alternatives (Texas Instruments, Nexperia, Toshiba): Parts meeting core 8:1 multiplexer functionality and 16-SOIC package requirements but with variations in on-state resistance, supply voltage ranges, or performance characteristics that require circuit-level evaluation.
Parameter Comparison
| Parameter | MAX4051CSE-T | MAX4051CSE+T | CD74HC4051M | CD74HC4051M96 | CD74HC4051M96G3 | CD74HC4051MT | HEF4051BT,653 | TC74HC4051AF(EL,F) |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Nexperia USA Inc. | Toshiba Semiconductor |
| Multiplexer Configuration | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 |
| On-State Resistance (Max) | 100Ohm | 100Ohm | 130Ohm | 130Ohm | 130Ohm | 130Ohm | 155Ohm | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 12Ohm (Max) | 12Ohm (Max) | 5Ohm | 5Ohm | 5Ohm | 5Ohm | 5Ohm | 5Ohm |
| Voltage - Supply, Single (V+) | 2V ~ 16V | 2V ~ 16V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 3V ~ 15V | 2V ~ 6V |
| Voltage - Supply, Dual (V±) | ±2.7V ~ 8V | ±2.7V ~ 8V | ±1V ~ 5V | ±1V ~ 5V | ±1V ~ 5V | ±1V ~ 5V | - | ±2V ~ 6V |
| Switch Time (Ton, Toff) | 175ns, 150ns | 175ns, 150ns | - | - | - | - | - | 18ns, 29ns |
| Charge Injection | 2pC | 2pC | - | - | - | - | - | - |
| Channel Capacitance (CS(off), CD(off)) | 2pF, 2pF | 2pF, 2pF | 25pF | 25pF | 25pF | 25pF | 7.5pF | 2pF, 70pF |
| Current - Leakage (IS(off)) (Max) | 1nA | 1nA | 400nA | 400nA | 400nA | 400nA | 200nA | 100nA |
| Crosstalk | -90dB @ 100kHz | -90dB @ 100kHz | - | - | - | - | -50dB @ 1MHz | -50dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 85°C |
| Package / Case | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.154", 3.90mm) | 16-SOIC (0.209", 5.30mm) |
| Product Status | Obsolete | Active | Last Time Buy | Active | Last Time Buy | Last Time Buy | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant |
Engineering Selection Recommendations
Recommended Primary Substitute: MAX4051CSE+T
The MAX4051CSE+T is the direct functional equivalent of the MAX4051CSE-T, maintaining identical electrical specifications and 16-SOIC packaging. The only difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard). This part provides seamless drop-in compatibility with no circuit modifications required. Current inventory availability is 1,984 pieces.
Secondary Substitutes (Texas Instruments CD74HC4051 Series)
The CD74HC4051M, CD74HC4051M96, CD74HC4051M96G3, and CD74HC4051MT variants are functionally compatible 8:1 multiplexers in 16-SOIC packaging. These parts feature:
- Higher on-state resistance (130Ohm vs. 100Ohm), which may impact signal attenuation in low-impedance applications
- Improved channel-to-channel matching (5Ohm vs. 12Ohm)
- Reduced supply voltage range (2V–6V single, ±1V–±5V dual) compared to the original part's extended range
- Extended operating temperature range (-55°C to 125°C vs. 0°C to 70°C)
- ROHS3 compliance and MSL 1 rating
These parts are suitable for applications where the reduced supply voltage range and higher on-state resistance are acceptable. CD74HC4051M96 (Active status) and CD74HC4051M96G3 (Last Time Buy) offer the highest current inventory levels.
Alternative Substitute: HEF4051BT,653 (Nexperia)
The HEF4051BT,653 is an 8:1 multiplexer with 155Ohm on-state resistance and 16-SOIC packaging. It supports single supply operation (3V–15V) but does not support dual supply configuration. Operating temperature range extends to -40°C to 125°C. This part is suitable for single-supply applications where the higher on-state resistance is acceptable. Product status is Active with 2,629 pieces in inventory.
Alternative Substitute: TC74HC4051AF(EL,F) (Toshiba)
The TC74HC4051AF(EL,F) matches the original part's 100Ohm on-state resistance and features faster switch times (18ns, 29ns). However, it uses a 16-SOP package with 0.209" (5.30mm) width, which differs from the original 0.154" (3.90mm) width. This package difference may require PCB layout modifications. Supply voltage range is limited to 2V–6V single and ±2V–±6V dual. Product status is Active with 727 pieces in inventory.
Frequently Asked Questions (FAQ)
Q: Can MAX4051CSE+T replace MAX4051CSE-T without circuit modifications?
A: Yes. The MAX4051CSE+T is electrically and mechanically identical to the MAX4051CSE-T. The only differences are product status (Active vs. Obsolete) and packaging format (Tape & Reel). No circuit modifications are required.
Q: What is the impact of higher on-state resistance in CD74HC4051 variants?
A: The CD74HC4051 series has 130Ohm on-state resistance compared to the original part's 100Ohm. This 30Ohm increase will result in proportionally higher signal attenuation and voltage drop across the switch. In low-impedance signal paths or high-current applications, this may degrade signal quality. Evaluate circuit performance requirements before substitution.
Q: Are the CD74HC4051 variants pin-compatible with MAX4051CSE-T?
A: Yes. All CD74HC4051 variants use the same 16-SOIC pinout as the MAX4051CSE-T. However, verify that the reduced supply voltage range (2V–6V single, ±1V–±5V dual) is compatible with your circuit design, as the original part supports up to 16V single supply and ±8V dual supply.
Q: Why does TC74HC4051AF(EL,F) have a different package width?
A: The TC74HC4051AF(EL,F) uses a 16-SOP package with 0.209" (5.30mm) width, compared to the standard 16-SOIC 0.154" (3.90mm) width. This difference may require PCB footprint and layout modifications. Verify PCB compatibility before selection.
Q: What is the difference between CD74HC4051M, CD74HC4051M96, CD74HC4051M96G3, and CD74HC4051MT?
A: These variants differ in packaging format and product status. CD74HC4051M uses Tube packaging (Last Time Buy status). CD74HC4051M96 uses Cut Tape & Digi-Reel packaging (Active status). CD74HC4051M96G3 uses Tape & Reel packaging (Last Time Buy status). CD74HC4051MT uses Tape & Reel packaging (Last Time Buy status). All have identical electrical specifications. Select based on packaging requirements and inventory availability.
Q: Can HEF4051BT,653 operate in dual supply mode?
A: No. The HEF4051BT,653 supports only single supply operation (3V–15V). It does not support dual supply (V±) configuration. Use this part only in single-supply applications.
Q: What is the operating temperature range difference between substitutes?
A: The original MAX4051CSE-T operates from 0°C to 70°C. Most substitutes extend this range: CD74HC4051 variants operate from -55°C to 125°C, HEF4051BT,653 from -40°C to 125°C, and TC74HC4051AF(EL,F) from -40°C to 85°C. Extended temperature range provides greater design flexibility for industrial or automotive applications.
Q: Are all substitutes RoHS compliant?
A: Yes. All listed substitutes are RoHS compliant (ROHS3 or RoHS Compliant status). All have MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications.
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