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MAX4526CSA Equivalent & Substitute Parts
Part Overview
The MAX4526CSA is a dual SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This 8-SOIC surface mount device provides two independent 2:1 multiplexer/demultiplexer circuits with 175Ohm on-state resistance, designed for signal routing and switching applications across supply voltages ranging from 4.5V to 36V (single supply) or ±4.5V to ±18V (dual supply).
The MAX4526CSA is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and maintenance requirements for systems utilizing this interface switch.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 |
| Number of Circuits | 2 |
| On-State Resistance (Max) | 175Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Voltage - Supply, Single (V+) | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 18V |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 13pF |
| Current - Leakage (IS(off)) (Max) | 500pA |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
Substitute Part Grouping Explanation
Substitution of the MAX4526CSA is determined by strict equivalence across the following critical parameters:
- Switch circuit topology: SPDT configuration with 2:1 multiplexer/demultiplexer functionality
- Number of independent circuits: 2
- On-state resistance specification: 175Ohm maximum
- Channel-to-channel matching tolerance: 500mOhm
- Supply voltage ranges: 4.5V to 36V (single) and ±4.5V to ±18V (dual)
- Electrical characteristics: Charge injection (1pC), channel capacitance (13pF), leakage current (500pA max)
- Operating temperature range: 0°C to 70°C
- Package form factor: 8-SOIC surface mount
The MAX4526CSA+ meets all these criteria and is therefore a direct functional equivalent. The primary distinction is product status and compliance certification.
Parameter Comparison
| Parameter | MAX4526CSA | MAX4526CSA+ |
|---|---|---|
| Switch Circuit | SPDT | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| Number of Circuits | 2 | 2 |
| On-State Resistance (Max) | 175Ohm | 175Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm | 500mOhm |
| Voltage - Supply, Single (V+) | 4.5V ~ 36V | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 18V | ±4.5V ~ 18V |
| Charge Injection | 1pC | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 13pF | 13pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 500pA |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The MAX4526CSA+ is the direct substitute for the MAX4526CSA. Both parts are electrically and mechanically identical across all functional parameters. The MAX4526CSA+ is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance certification. The MAX4526CSA is obsolete and should be replaced with the MAX4526CSA+ in component procurement and design documentation.
Both parts maintain REACH Unaffected status and EAR99 export classification. The transition from MAX4526CSA to MAX4526CSA+ requires no circuit redesign, PCB layout modification, or firmware changes.
Frequently Asked Questions (FAQ)
Q: Can MAX4526CSA+ be used as a direct replacement for MAX4526CSA in existing designs?
A: Yes. The MAX4526CSA+ is electrically and mechanically identical to the MAX4526CSA. No circuit modifications, PCB layout changes, or design alterations are required. The parts are pin-compatible and functionally equivalent across all specified parameters.
Q: What is the difference between MAX4526CSA and MAX4526CSA+?
A: The primary differences are product status and compliance certification. The MAX4526CSA is obsolete, while the MAX4526CSA+ is active. The MAX4526CSA+ is ROHS3 compliant, whereas the MAX4526CSA is RoHS non-compliant. All electrical and mechanical specifications are identical.
Q: Are there packaging differences between these parts?
A: Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package. The MAX4526CSA+ is supplied in Tube packaging, while the MAX4526CSA packaging specification was not provided. The physical form factor and pin configuration are identical.
Q: What supply voltage ranges are supported?
A: Both parts support single supply operation from 4.5V to 36V and dual supply operation from ±4.5V to ±18V. This dual-supply capability allows use in both single-supply and split-rail power systems.
Q: Is the MAX4526CSA+ suitable for new product designs?
A: Yes. The MAX4526CSA+ is the recommended choice for new designs. It carries active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory compliance.
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