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MAX4668CSE Equivalent & Substitute Parts
Part Overview
The MAX4668CSE is a 2-circuit IC switch with SPST-NO (Single Pole Single Throw - Normally Open) configuration manufactured by Analog Devices Inc./Maxim Integrated. This component operates as a 1:1 multiplexer/demultiplexer with 2.5Ohm on-state resistance and is housed in a 16-SOIC surface mount package. The MAX4668CSE is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO |
| Number of Circuits | 2 |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| On-State Resistance (Max) | 2.5Ohm |
| Channel-to-Channel Matching (ΔRon) | 50mOhm |
| Voltage - Supply, Single (V+) | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 275ns, 175ns |
| Charge Injection | 450pC |
| Channel Capacitance (CS(off), CD(off)) | 65pF, 65pF |
| Current - Leakage (IS(off)) (Max) | 500pA |
| Crosstalk | -66dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution of the MAX4668CSE is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for:
- Switch circuit topology (SPST - NO)
- Number of circuits (2)
- Multiplexer configuration (1:1)
- On-state resistance (2.5Ohm maximum)
- Channel-to-channel matching (50mOhm)
- Supply voltage ranges (single and dual)
- Switch timing characteristics (Ton, Toff)
- Charge injection (450pC)
- Channel capacitance values
- Leakage current specifications
- Crosstalk performance (-66dB @ 1MHz)
- Operating temperature range (0°C ~ 70°C)
- Package type and physical dimensions (16-SOIC)
The MAX4668CSE+ meets all these criteria and serves as a direct functional equivalent.
Parameter Comparison
| Parameter | MAX4668CSE | MAX4668CSE+ |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPST - NO | SPST - NO |
| Number of Circuits | 2 | 2 |
| Multiplexer Configuration | 1:1 | 1:1 |
| On-State Resistance (Max) | 2.5Ohm | 2.5Ohm |
| Channel-to-Channel Matching (ΔRon) | 50mOhm | 50mOhm |
| Voltage - Supply, Single (V+) | 4.5V ~ 36V | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 275ns, 175ns | 275ns, 175ns |
| Charge Injection | 450pC | 450pC |
| Channel Capacitance (CS(off), CD(off)) | 65pF, 65pF | 65pF, 65pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 500pA |
| Crosstalk | -66dB @ 1MHz | -66dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Packaging | Not specified | Tube |
Engineering Selection Recommendations
The MAX4668CSE+ is the direct substitute for the obsolete MAX4668CSE. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility. The primary distinction is product status and regulatory compliance.
The MAX4668CSE+ is classified as active, ensuring continued availability and manufacturing support. Additionally, the MAX4668CSE+ achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the original MAX4668CSE is RoHS non-compliant. For new designs or production transitions, the MAX4668CSE+ is the appropriate selection.
Frequently Asked Questions (FAQ)
Q: Can the MAX4668CSE+ be used as a direct replacement for the MAX4668CSE?
A: Yes. The MAX4668CSE+ is electrically and mechanically identical to the MAX4668CSE across all specified parameters, including switch circuit topology, on-state resistance, supply voltage ranges, timing characteristics, and package dimensions. No circuit modifications are required.
Q: What is the primary reason to transition from MAX4668CSE to MAX4668CSE+?
A: The MAX4668CSE is obsolete, while the MAX4668CSE+ is active and in production. Additionally, the MAX4668CSE+ meets ROHS3 compliance standards, whereas the original part does not.
Q: Are there any differences in package handling or storage?
A: The MAX4668CSE+ is supplied in tube packaging, whereas the original MAX4668CSE packaging is not specified. Both parts maintain identical moisture sensitivity level (MSL 1 - Unlimited) and physical dimensions (16-SOIC, 0.154" width, 3.90mm).
Q: Do the electrical performance characteristics differ between these parts?
A: No. Both parts maintain identical on-state resistance (2.5Ohm), channel-to-channel matching (50mOhm), supply voltage ranges, switch timing, charge injection, channel capacitance, leakage current, and crosstalk specifications.
Q: Is the MAX4668CSE+ suitable for all applications originally designed for the MAX4668CSE?
A: Yes, provided the original design operates within the specified electrical and temperature parameters (0°C ~ 70°C operating range, 4.5V ~ 36V single supply or ±4.5V ~ 20V dual supply). The MAX4668CSE+ maintains full functional equivalence.
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