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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. This single-circuit switch device operates across a wide supply voltage range and delivers low on-state resistance with minimal crosstalk, making it suitable for precision signal routing applications. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and environmental regulatory adherence.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Multiplexer Configuration | 8:1 |
| On-State Resistance (Max) | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 16Ohm (Max) |
| Supply Voltage - Single (V+) | 2.7V ~ 16V |
| Supply Voltage - Dual (V±) | ±2.7V ~ 8V |
| Switch Time (Ton/Toff) | 275ns / 150ns (Max) |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off)/CD(off)) | 2pF / 2pF |
| Leakage Current (IS(off)) (Max) | 100pA |
| Crosstalk | -90dB @ 100kHz |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution for the MAX349EAP+ is determined by strict equivalence across the following critical parameters:
- Multiplexer circuit configuration: 8:1 topology
- On-state resistance specification: 100Ohm maximum
- Channel-to-channel resistance matching: 16Ohm maximum deviation
- Supply voltage compatibility: Single supply 2.7V ~ 16V or dual supply ±2.7V ~ 8V
- Switching performance: Ton/Toff specifications of 275ns/150ns maximum
- Package format: 20-SSOP surface mount only
- Operating temperature range: -40°C ~ 85°C minimum
- Regulatory compliance: RoHS3 status required
Only parts meeting all these parameters qualify as direct substitutes. No parameter relaxation or functional compromise is acceptable.
Parameter Comparison
| Parameter | MAX349EAP+ (Main Part) | MAX349EAP+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Multiplexer Configuration | 8:1 | 8:1 |
| On-State Resistance (Max) | 100Ohm | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 16Ohm (Max) | 16Ohm (Max) |
| Supply Voltage - Single (V+) | 2.7V ~ 16V | 2.7V ~ 16V |
| Supply Voltage - 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 |
| Leakage Current (IS(off)) (Max) | 100pA | 100pA |
| Crosstalk | -90dB @ 100kHz | -90dB @ 100kHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The MAX349EAP+ maintains Active product status with full regulatory compliance under RoHS3 and REACH standards. Selection of equivalent parts must prioritize identical electrical specifications and 20-SSOP package format to ensure direct PCB compatibility without redesign. MSL Level 1 rating permits unlimited shelf life without moisture bake-out procedures, reducing supply chain complexity. ROHS3 compliance is mandatory for applications subject to environmental regulations in regulated markets.
Frequently Asked Questions (FAQ)
Q: Can I substitute the MAX349EAP+ with a different multiplexer configuration? A: No. The 8:1 topology is a core functional requirement. Alternative configurations do not qualify as substitutes.
Q: What happens if I use a part with higher on-state resistance? A: Parts exceeding 100Ohm maximum on-state resistance do not meet the electrical specification and are not acceptable substitutes.
Q: Is the 20-SSOP package interchangeable with other package types? A: No. The 20-SSOP package format is mandatory for PCB compatibility. Alternative packages require circuit board redesign and are not direct substitutes.
Q: Does the operating temperature range affect substitution eligibility? A: Yes. Parts with narrower temperature ranges than -40°C ~ 85°C do not meet the specification and cannot be used as substitutes.
Q: Are RoHS3 and REACH compliance requirements for substitution? A: Yes. Both certifications are mandatory for regulatory compliance in applicable markets and must be maintained in any substitute part selection.
Q: What is the significance of the 16Ohm channel-to-channel matching specification? A: Channel-to-channel matching ensures uniform signal attenuation across all eight multiplexer channels. Parts exceeding this tolerance introduce signal distortion and are not acceptable substitutes.
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