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MAX4542ESA Equivalent & Substitute Parts
Part Overview
The MAX4542ESA is a 2-circuit IC switch with SPST-NC (Single Pole Single Throw - Normally Closed) configuration, designed for analog signal switching applications. It features 60Ohm on-state resistance and operates across a 2.7V to 12V single supply voltage range. The device is currently classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPST - NC |
| Number of Circuits | 2 |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| On-State Resistance (Max) | 60Ohm |
| Channel-to-Channel Matching (ΔRon) | 800mOhm |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V |
| Switch Time (Ton, Toff) (Max) | 100ns, 75ns |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 100pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4542ESA is determined by strict equivalence across the following critical parameters:
- Switch circuit topology: SPST - NC configuration with 2 circuits
- Electrical performance: 60Ohm maximum on-state resistance, 800mOhm channel-to-channel matching, 100ns/75ns switching times
- Signal integrity: 1pC charge injection, 8pF channel capacitance, -90dB crosstalk at 1MHz
- Supply voltage range: 2.7V to 12V single supply operation
- Thermal operating range: -40°C to 85°C
- Physical form factor: 8-SOIC surface mount package with 0.154" (3.90mm) width
The MAX4542ESA+ meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is product status and compliance certification.
Parameter Comparison
| Parameter | MAX4542ESA | MAX4542ESA+ |
|---|---|---|
| Switch Circuit | SPST - NC | SPST - NC |
| Number of Circuits | 2 | 2 |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 |
| On-State Resistance (Max) | 60Ohm | 60Ohm |
| Channel-to-Channel Matching (ΔRon) | 800mOhm | 800mOhm |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V | 2.7V ~ 12V |
| Switch Time (Ton, Toff) (Max) | 100ns, 75ns | 100ns, 75ns |
| Charge Injection | 1pC | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 100pA | 100pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-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 MAX4542ESA+ is the direct functional equivalent of the MAX4542ESA. All electrical and mechanical parameters are identical. Selection between these parts should be based on the following factors:
Product Status: The MAX4542ESA is obsolete, while the MAX4542ESA+ is active. For new designs or systems requiring long-term component availability, the MAX4542ESA+ is the appropriate choice.
Regulatory Compliance: The MAX4542ESA+ carries ROHS3 compliance certification, whereas the original MAX4542ESA is RoHS non-compliant. Systems subject to RoHS regulations must use the MAX4542ESA+.
Packaging and Supply: The MAX4542ESA+ is supplied in tube packaging, supporting standard manufacturing workflows. Inventory availability of the MAX4542ESA+ (1137 pcs) exceeds that of the obsolete variant (2128 pcs of legacy stock).
Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99), and both carry MSL Level 1 (Unlimited) moisture sensitivity ratings.
Frequently Asked Questions (FAQ)
Q: Can MAX4542ESA+ be used as a direct replacement for MAX4542ESA in existing designs?
A: Yes. The MAX4542ESA+ is electrically and mechanically identical to the MAX4542ESA. Pin configuration, package dimensions (8-SOIC, 0.154" width), and all electrical parameters are equivalent. No circuit modifications are required.
Q: What is the primary reason to transition from MAX4542ESA to MAX4542ESA+?
A: The MAX4542ESA is obsolete. The MAX4542ESA+ is an active product with current manufacturing support. Additionally, the MAX4542ESA+ meets ROHS3 compliance requirements, whereas the original does not.
Q: Are there any differences in electrical performance between these parts?
A: No. Both parts deliver identical on-state resistance (60Ohm), switching times (100ns/75ns), charge injection (1pC), channel capacitance (8pF), leakage current (100pA), and crosstalk performance (-90dB @ 1MHz).
Q: What supply voltage range does the MAX4542ESA+ support?
A: The MAX4542ESA+ operates with a single supply voltage range of 2.7V to 12V, identical to the original MAX4542ESA.
Q: Is the 8-SOIC package footprint identical between both parts?
A: Yes. Both parts use the 8-SOIC package with 0.154" (3.90mm) width. PCB layouts and footprints are fully compatible.
Q: What is the operating temperature range for the MAX4542ESA+?
A: The operating temperature range is -40°C to 85°C (TA), matching the original MAX4542ESA specification.
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