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MAX349EAP Equivalent & Substitute Parts
Part Overview
The MAX349EAP is an 8:1 analog multiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, designed for signal routing and switching applications in interface circuits. This device features a single 8:1 multiplexer configuration with 100Ohm on-state resistance in a 20-SSOP surface mount package. The MAX349EAP is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Multiplexer Configuration | 8:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 16Ohm (Max) |
| Voltage - Supply, Single (V+) | 2.7V ~ 16V |
| Voltage - Supply, Dual (V±) | ±2.7V ~ 8V |
| Switch Time (Ton, Toff) | 275ns, 150ns (Max) |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 2pF, 2pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -90dB @ 100kHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX349EAP is determined by strict equivalence across the following critical parameters:
- Multiplexer configuration: 8:1
- Number of circuits: 1
- On-state resistance: 100Ohm maximum
- Channel-to-channel matching: 16Ohm maximum
- Supply voltage ranges: 2.7V ~ 16V (single) and ±2.7V ~ 8V (dual)
- Switch timing characteristics: 275ns (Ton), 150ns (Toff) maximum
- Charge injection: 1pC
- Channel capacitance: 2pF (CS(off) and CD(off))
- Leakage current: 100pA maximum
- Crosstalk performance: -90dB @ 100kHz
- Operating temperature range: -40°C ~ 85°C
- Package type: 20-SSOP surface mount
The MAX349EAP+ meets all electrical and mechanical parameters required for direct substitution. The primary distinction is product status and compliance certification.
Parameter Comparison
| Parameter | MAX349EAP | MAX349EAP+ |
|---|---|---|
| Multiplexer Configuration | 8:1 | 8:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 100Ohm | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 16Ohm (Max) | 16Ohm (Max) |
| Voltage - Supply, Single (V+) | 2.7V ~ 16V | 2.7V ~ 16V |
| Voltage - Supply, Dual (V±) | ±2.7V ~ 8V | ±2.7V ~ 8V |
| Switch Time (Ton, Toff) (Max) | 275ns, 150ns | 275ns, 150ns |
| Charge Injection | 1pC | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 2pF, 2pF | 2pF, 2pF |
| Current - Leakage (IS(off)) (Max) | 100pA | 100pA |
| Crosstalk | -90dB @ 100kHz | -90dB @ 100kHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP (0.209", 5.30mm 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 MAX349EAP+ is the direct functional equivalent of the MAX349EAP. All electrical parameters, switching characteristics, and mechanical specifications are identical. Selection between these parts is determined by non-technical factors:
- The MAX349EAP is obsolete and no longer in active production. The MAX349EAP+ is actively manufactured and supported.
- The MAX349EAP+ carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The MAX349EAP is RoHS non-compliant.
- Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99).
- The MAX349EAP+ is supplied in tube packaging, while the MAX349EAP packaging format is not specified.
For new designs or ongoing production requiring this multiplexer function, the MAX349EAP+ is the appropriate selection due to active product status and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can MAX349EAP+ replace MAX349EAP in existing designs?
A: Yes. The MAX349EAP+ is electrically and mechanically identical to the MAX349EAP across all specified parameters. Direct substitution is supported without circuit modification.
Q: What is the primary reason to transition from MAX349EAP to MAX349EAP+?
A: The MAX349EAP is classified as obsolete. The MAX349EAP+ is the active production equivalent, ensuring long-term availability and supply chain continuity.
Q: Are there compliance differences between these parts?
A: Yes. The MAX349EAP+ is ROHS3 compliant, while the MAX349EAP is RoHS non-compliant. Both maintain identical REACH and ECCN status.
Q: Do these parts use the same package?
A: Both parts use the 20-SSOP surface mount package with identical dimensions (0.209", 5.30mm width). The MAX349EAP+ is supplied in tube packaging.
Q: Are the electrical specifications identical?
A: Yes. On-state resistance, switching times, charge injection, channel capacitance, leakage current, crosstalk, and all other electrical parameters are identical between MAX349EAP and MAX349EAP+.
Q: What supply voltage ranges are supported?
A: Both parts support single supply operation from 2.7V to 16V and dual supply operation from ±2.7V to ±8V.
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