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MAX317CSA Equivalent & Substitute Parts
Part Overview
The MAX317CSA is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates with 35Ohm on-state resistance and supports both single and dual supply voltage configurations. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 35Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm (Max) |
| Voltage - Supply, Single (V+) | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 175ns, 145ns |
| Charge Injection | 3pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 250pA |
| Crosstalk | -85dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX317CSA is determined by strict equivalence across the following critical parameters:
- Switch circuit topology (SPST - NC configuration)
- Multiplexer/demultiplexer ratio (1:1)
- On-state resistance specification (35Ohm maximum)
- Channel-to-channel matching tolerance (2Ohm maximum)
- Supply voltage ranges (single and dual configurations)
- Switching performance metrics (Ton, Toff)
- Charge injection and capacitance characteristics
- Leakage current specifications
- Package form factor (8-SOIC)
- Operating temperature range
Only parts meeting all these electrical and mechanical criteria qualify as direct substitutes. The MAX317CSA+ is identified as a functionally equivalent alternative based on complete parameter alignment.
Parameter Comparison
| Parameter | MAX317CSA | MAX317CSA+ |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPST - NC | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 35Ohm | 35Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm (Max) | 2Ohm (Max) |
| Voltage - Supply, Single (V+) | 10V ~ 30V | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 175ns, 145ns | 175ns, 145ns |
| Charge Injection | 3pC | 3pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 250pA | 250pA |
| Crosstalk | -85dB @ 1MHz | -85dB @ 1MHz |
| 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 |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The MAX317CSA+ serves as the direct functional equivalent for the obsolete MAX317CSA. Both parts share identical electrical specifications and package form factors, ensuring pin-compatible replacement in existing circuit designs.
The primary distinction between these parts is product lifecycle status and regulatory compliance. The MAX317CSA is classified as obsolete, while the MAX317CSA+ maintains active production status. Additionally, the MAX317CSA+ achieves ROHS3 compliance, whereas the original MAX317CSA is RoHS non-compliant. Both parts maintain equivalent REACH status.
For new designs or ongoing production requiring this switch topology, the MAX317CSA+ is the appropriate selection. For legacy system maintenance where the original MAX317CSA is specified, the MAX317CSA+ provides electrical and mechanical compatibility without design modification.
Frequently Asked Questions (FAQ)
Q: Are MAX317CSA and MAX317CSA+ pin-compatible? A: Yes. Both parts use the 8-SOIC package with identical pinout and electrical characteristics, enabling direct substitution without PCB redesign.
Q: What is the primary reason to transition from MAX317CSA to MAX317CSA+? A: The MAX317CSA is obsolete. The MAX317CSA+ is the active production equivalent with identical electrical performance and improved regulatory compliance (ROHS3).
Q: Do the parts have different supply voltage requirements? A: No. Both support single supply (10V ~ 30V) and dual supply (±4.5V ~ 20V) configurations identically.
Q: Are there differences in switching speed or signal integrity? A: No. Switch times (Ton, Toff), charge injection, capacitance, leakage current, and crosstalk specifications are identical across both parts.
Q: What packaging options are available? A: Both parts are supplied in 8-SOIC surface-mount packages. The MAX317CSA+ is available in Tube packaging.
Q: Is the MAX317CSA+ suitable for applications requiring RoHS compliance? A: Yes. The MAX317CSA+ is ROHS3 compliant, making it appropriate for applications with regulatory compliance requirements.
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