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MAX303MSE/PR+ Equivalent & Substitute Parts
Part Overview
The MAX303MSE/PR+ is a dual-channel SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This interface component provides 2:1 multiplexing/demultiplexing functionality with 30Ohm on-state resistance, designed for signal routing applications requiring low impedance and fast switching performance. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial applications across extended temperature ranges.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPDT (Single Pole Double Throw) |
| Number of Circuits | 2 |
| Multiplexer/Demultiplexer Circuit | 2:1 |
| On-State Resistance (Max) | 30Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Voltage - Supply, Single (V+) | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 150ns, 100ns |
| Charge Injection | 10pC |
| Channel Capacitance (CS(off), CD(off)) | 12pF |
| Current - Leakage (IS(off)) (Max) | 250pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature | -55°C ~ 125°C (TA) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX303MSE/PR+ is determined by strict equivalence across the following critical parameters:
- Switch circuit topology: SPDT configuration with 2 independent circuits
- Multiplexer function: 2:1 channel selection capability
- On-state resistance: Maximum 30Ohm specification
- Channel matching: ΔRon tolerance of 500mOhm or better
- Supply voltage compatibility: Single supply 10V ~ 30V or dual supply ±4.5V ~ 20V
- Switching performance: Ton ≤ 150ns and Toff ≤ 100ns
- Signal integrity: Charge injection ≤ 10pC and crosstalk ≤ -90dB @ 1MHz
- Operating temperature range: -55°C ~ 125°C minimum
- Regulatory compliance: RoHS3 and REACH status alignment
Only components meeting all specified parameters qualify as direct equivalents or functional substitutes.
Parameter Comparison
| Parameter | MAX303MSE/PR+ (Main Part) | MAX303MSE/PR+ (Direct Equivalent) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Category | Interface | Interface |
| Switch Circuit | SPDT | SPDT |
| Number of Circuits | 2 | 2 |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| On-State Resistance (Max) | 30Ohm | 30Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm | 500mOhm |
| Voltage - Supply, Single (V+) | 10V ~ 30V | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 150ns, 100ns | 150ns, 100ns |
| Charge Injection | 10pC | 10pC |
| Channel Capacitance (CS(off), CD(off)) | 12pF | 12pF |
| Current - Leakage (IS(off)) (Max) | 250pA | 250pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature | -55°C ~ 125°C (TA) | -55°C ~ 125°C (TA) |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The MAX303MSE/PR+ maintains Active product status with full regulatory compliance under RoHS3 and REACH frameworks. Component selection should prioritize parts with identical electrical specifications across all switching parameters, supply voltage ranges, and signal integrity metrics. Active status ensures continued manufacturer support and supply chain availability. RoHS3 compliance and unlimited MSL rating confirm suitability for standard industrial and commercial deployment without additional environmental qualification requirements.
Frequently Asked Questions (FAQ)
Q: What defines a valid substitute for the MAX303MSE/PR+? A: A valid substitute must match all electrical parameters including SPDT topology, 2:1 multiplexing function, 30Ohm on-state resistance, 500mOhm channel matching, dual supply voltage ranges, switching times, charge injection, channel capacitance, leakage current, crosstalk performance, and operating temperature range. Regulatory compliance status must also align.
Q: Can parts with lower on-state resistance substitute the MAX303MSE/PR+? A: Lower on-state resistance values are acceptable as they represent improved performance within the same functional category. However, all other electrical parameters must remain within specification.
Q: Are there packaging considerations for substitution? A: Packaging information was not provided in the component specifications. Substitution decisions must be based solely on electrical and functional parameters listed in this reference.
Q: What is the significance of the 500mOhm channel matching specification? A: Channel-to-Channel Matching (ΔRon) of 500mOhm ensures balanced signal attenuation across both SPDT circuits, critical for applications requiring consistent impedance characteristics between switched channels.
Q: Does RoHS3 compliance affect substitution eligibility? A: Yes. Components must maintain equivalent RoHS3 compliance status to ensure regulatory alignment in target applications and supply chain continuity.
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