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MAX398C/D Equivalent & Substitute Parts
Part Overview
The MAX398C/D is an 8:1 multiplexer/demultiplexer IC with 100Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This die-packaged component is classified as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications. The obsolete status necessitates sourcing alternative components that maintain functional and electrical equivalence while offering active product availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Multiplexer/Demultiplexer Circuit Configuration | 8:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 100Ohm |
| Channel-to-Channel Matching (ΔRon, Max) | 6Ohm |
| Voltage - Supply, Single (V+) | 3V ~ 15V |
| Voltage - Supply, Dual (V±) | ±3V ~ 8V |
| Switch Time (Ton, Toff, Max) | 150ns, 150ns |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 11pF, 40pF |
| Current - Leakage (IS(off), Max) | 100pA |
| Crosstalk | -92dB @ 100kHz |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX398C/D is determined by strict equivalence across the following critical parameters:
- Multiplexer Configuration: 8:1 topology (mandatory match)
- On-State Resistance: 100Ohm maximum (mandatory match)
- Channel-to-Channel Matching: 6Ohm maximum (mandatory match)
- Supply Voltage Range: 3V ~ 15V single supply and ±3V ~ 8V dual supply (mandatory match)
- Switching Performance: 150ns maximum for both Ton and Toff (mandatory match)
- Signal Integrity Parameters: Charge injection (2pC), channel capacitance (11pF/40pF), leakage current (100pA), and crosstalk (-92dB @ 100kHz) (mandatory match)
- Compliance Standards: ROHS3 compliance and MSL Level 1 (mandatory match)
The MAX398ESE+ qualifies as a direct functional substitute, maintaining identical electrical specifications while offering active product status and standard surface-mount packaging (16-SOIC).
Parameter Comparison
| Parameter | MAX398C/D (Main Part) | MAX398ESE+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active |
| Multiplexer/Demultiplexer Circuit | 8:1 | 8:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 100Ohm | 100Ohm |
| Channel-to-Channel Matching (ΔRon, Max) | 6Ohm | 6Ohm |
| Voltage - Supply, Single (V+) | 3V ~ 15V | 3V ~ 15V |
| Voltage - Supply, Dual (V±) | ±3V ~ 8V | ±3V ~ 8V |
| Switch Time (Ton, Toff, Max) | 150ns, 150ns | 150ns, 150ns |
| Charge Injection | 2pC | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 11pF, 40pF | 11pF, 40pF |
| Current - Leakage (IS(off), Max) | 100pA | 100pA |
| Crosstalk | -92dB @ 100kHz | -92dB @ 100kHz |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | Die | 16-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C (TA) |
Engineering Selection Recommendations
The MAX398ESE+ is the direct substitute for the obsolete MAX398C/D. Both components are manufactured by Analog Devices Inc./Maxim Integrated and maintain identical electrical specifications across all critical parameters: 8:1 multiplexer configuration, 100Ohm on-state resistance, 6Ohm channel-to-channel matching, dual supply voltage ranges, 150ns switching times, and signal integrity metrics.
The primary distinction is packaging: the MAX398C/D is supplied as a die, while the MAX398ESE+ is packaged in 16-SOIC form factor. Both components maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility.
The MAX398ESE+ offers extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), providing broader thermal performance capability. Active product status of the MAX398ESE+ ensures long-term availability and supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Can the MAX398ESE+ directly replace the MAX398C/D in existing designs?
A: Electrical substitution is complete. The MAX398ESE+ maintains identical functional specifications. However, packaging differs: MAX398C/D is a die package, while MAX398ESE+ is 16-SOIC. PCB layout and assembly processes must accommodate the 16-SOIC form factor.
Q: What are the key parameters that define substitution eligibility?
A: Substitution requires matching: 8:1 multiplexer configuration, 100Ohm on-state resistance, 6Ohm channel-to-channel matching, 3V ~ 15V single supply and ±3V ~ 8V dual supply voltage ranges, 150ns switching times, 2pC charge injection, 11pF/40pF channel capacitance, 100pA leakage current, and -92dB crosstalk at 100kHz.
Q: Are there compliance or certification differences between these parts?
A: Both components are ROHS3 compliant and carry MSL Level 1 rating. The MAX398ESE+ carries ECCN classification EAR99, while the MAX398C/D is marked OBSOLETE. Regulatory status is equivalent for active applications.
Q: What is the operating temperature impact of substitution?
A: The MAX398ESE+ supports -40°C ~ 85°C operating range, compared to 0°C ~ 70°C for the MAX398C/D. This extended range provides additional thermal margin for demanding applications.
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