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MAX317ESA+ Equivalent & Substitute Parts
Part Overview
The MAX317ESA+ is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This interface component operates as a 1:1 multiplexer/demultiplexer with 35Ohm on-state resistance and is designed for applications requiring low-impedance signal switching across a wide supply voltage range. The part is currently in active production status with 920 units available in original inventory. Equivalent and substitute parts are identified based on matching electrical characteristics, package specifications, and operational parameters that ensure functional interchangeability in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX317ESA+ |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Category | Interface |
| 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 | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX317ESA+ is determined by strict equivalence across the following critical parameters:
- Switch circuit topology: SPST - NC configuration
- Multiplexer circuit ratio: 1:1
- Number of independent circuits: 1
- On-state resistance specification: 35Ohm maximum
- Channel-to-channel matching tolerance: 2Ohm maximum
- Supply voltage ranges: Single supply 10V ~ 30V and dual supply ±4.5V ~ 20V
- Switching performance: Ton/Toff specifications of 175ns/145ns maximum
- Charge injection: 3pC
- Channel capacitance: 8pF off-state capacitance for both switch and drain
- Leakage current: 250pA maximum
- Crosstalk performance: -85dB @ 1MHz
- Operating temperature range: -40°C ~ 85°C
- Package specification: 8-SOIC surface mount with 0.154" width (3.90mm)
- Compliance certifications: ROHS3 Compliant, REACH Unaffected
Parts meeting all these parameters are classified as direct equivalents and may be substituted without circuit redesign or performance degradation.
Parameter Comparison
| Parameter | MAX317ESA+ (Main Part) | MAX317ESA+ (Direct Equivalent) |
|---|---|---|
| Manufacturer Part Number | MAX317ESA+ | MAX317ESA+ |
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit Type | 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 | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Product Status | Active | Active |
Engineering Selection Recommendations
The MAX317ESA+ is an active production component with full ROHS3 compliance and REACH unaffected status, making it suitable for current and future design implementations. When selecting equivalent parts, prioritize components with identical product status classification and matching compliance certifications to ensure regulatory alignment and long-term supply chain stability. The 8-SOIC surface mount package and specified electrical parameters provide a defined footprint for PCB layout and assembly processes. Direct equivalents maintain all functional and environmental specifications without requiring circuit modifications or performance trade-offs.
Frequently Asked Questions (FAQ)
Q: What defines a direct equivalent for the MAX317ESA+? A: A direct equivalent must match all electrical parameters including SPST-NC switch topology, 1:1 multiplexer configuration, 35Ohm on-state resistance, supply voltage ranges (10V ~ 30V single, ±4.5V ~ 20V dual), switching times (175ns/145ns), and the 8-SOIC surface mount package specification. Compliance certifications (ROHS3, REACH) must also align.
Q: Can the MAX317ESA+ be substituted with parts having different on-state resistance values? A: No. The 35Ohm on-state resistance specification is a critical electrical parameter. Parts with different resistance values will alter circuit impedance characteristics and are not direct equivalents.
Q: Are there package alternatives for the MAX317ESA+? A: The MAX317ESA+ is specified for 8-SOIC surface mount package only. Alternative package types would require separate part number designations and are not considered direct substitutes.
Q: What is the significance of the 2Ohm channel-to-channel matching specification? A: The ΔRon specification of 2Ohm maximum ensures consistent on-state resistance across switch channels, which is critical for applications requiring matched signal paths. Substitute parts must maintain this tolerance.
Q: Does the MAX317ESA+ support both single and dual supply operation? A: Yes. The part operates with single supply voltage from 10V to 30V or dual supply voltage from ±4.5V to ±20V, providing flexibility for different circuit topologies.
Q: What is the leakage current specification and why is it important? A: The maximum leakage current (IS(off)) is specified at 250pA in the off-state. This parameter is critical for low-power applications and high-impedance signal paths where leakage current can introduce noise or signal degradation.
Q: Is the MAX317ESA+ suitable for high-frequency applications? A: The part exhibits -85dB crosstalk at 1MHz and has a charge injection specification of 3pC, making it suitable for audio and instrumentation applications. Specific high-frequency performance limits are not provided in the parameter set.
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