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MAX4527CSA Equivalent & Substitute Parts
Part Overview
The MAX4527CSA is a 2-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a 2:1 multiplexer/demultiplexer with 175Ohm on-state resistance per channel, designed for signal routing and switching applications in analog systems.
The MAX4527CSA is classified as obsolete. Identifying suitable substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPDT (Single Pole Double Throw) |
| 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) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4527CSA is determined by strict equivalence across the following critical parameters:
- Switch circuit configuration (SPDT)
- Multiplexer/demultiplexer circuit topology (2:1)
- Number of circuits (2)
- On-state resistance maximum (175Ohm)
- Channel-to-channel matching specification (500mOhm)
- Supply voltage ranges (single and dual)
- Charge injection (1pC)
- Channel capacitance (13pF)
- Leakage current specification (500pA)
- Operating temperature range (0°C ~ 70°C)
- Package type (8-SOIC)
- Mounting type (Surface Mount)
Only parts meeting all these electrical and mechanical specifications qualify as direct substitutes. Packaging format differences (tube vs. other formats) do not affect functional equivalence.
Parameter Comparison
| Parameter | MAX4527CSA (Main Part) | MAX4527CSA+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active |
| 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) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Packaging Format | Standard | Tube |
Engineering Selection Recommendations
The MAX4527CSA+ is a direct functional equivalent to the MAX4527CSA. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical specifications and package geometry.
The primary distinction is product status: the MAX4527CSA is obsolete, while the MAX4527CSA+ is active. The MAX4527CSA+ offers improved regulatory compliance, meeting ROHS3 requirements compared to the non-compliant status of the original part. Both parts maintain REACH Unaffected status.
For new designs or applications requiring long-term component availability, the MAX4527CSA+ is the appropriate selection. For legacy system maintenance where the original MAX4527CSA must be retained, the MAX4527CSA+ provides functional continuity with enhanced compliance posture.
Frequently Asked Questions (FAQ)
Q: Are MAX4527CSA and MAX4527CSA+ pin-compatible? A: Yes. Both parts use the 8-SOIC package with identical pinout and mechanical dimensions (0.154" width, 3.90mm).
Q: Can MAX4527CSA+ replace MAX4527CSA in existing PCB designs? A: Yes. The MAX4527CSA+ is a direct substitute with identical electrical performance and package footprint. No PCB redesign is required.
Q: What is the difference between the two part numbers? A: The MAX4527CSA+ is the active production variant with ROHS3 compliance. The MAX4527CSA is the obsolete predecessor. Electrical specifications and functionality are identical.
Q: Does the packaging format (Tube vs. Standard) affect compatibility? A: No. Packaging format refers only to how components are supplied (quantity per reel, tape configuration, or tube). It does not affect electrical performance or PCB assembly compatibility.
Q: Are both parts suitable for 0°C to 70°C operating temperature applications? A: Yes. Both MAX4527CSA and MAX4527CSA+ are rated for 0°C ~ 70°C operating temperature range.
Q: What supply voltages do these parts support? A: Both parts support single supply operation (4.5V ~ 36V) and dual supply operation (±4.5V ~ 18V).
Q: Is the MAX4527CSA+ recommended for new designs? A: Yes. As an active product with ROHS3 compliance, the MAX4527CSA+ is the recommended choice for new designs and applications requiring long-term availability.
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