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MAX4603EWE Equivalent & Substitute Parts
Part Overview
The MAX4603EWE is a 4-circuit IC switch manufactured by Analog Devices Inc./Maxim Integrated, configured as SPST (Single Pole Single Throw) NO/NC with 2.5Ohm on-state resistance in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of suitable alternatives necessary for ongoing design support and production continuity. The part operates across a wide supply voltage range (4.5V to 36V single supply, or ±4.5V to ±20V dual supply) with fast switching characteristics suitable for signal routing and multiplexing applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPST - NO/NC |
| Number of Circuits | 4 |
| On-State Resistance (Max) | 2.5Ohm |
| Channel-to-Channel Matching (ΔRon) | 100mOhm |
| Voltage - Supply, Single (V+) | 4.5V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 250ns, 350ns |
| Charge Injection | 120pC |
| Channel Capacitance (CS(off), CD(off)) | 55pF, 55pF |
| Current - Leakage (IS(off)) (Max) | 500pA |
| Crosstalk | -59dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4603EWE is determined by strict equivalence across the following critical parameters:
- Switch circuit topology (SPST - NO/NC configuration)
- Number of independent circuits (4 circuits)
- On-state resistance specification (2.5Ohm maximum)
- Channel-to-channel resistance matching (100mOhm)
- Supply voltage operating ranges (4.5V to 36V single; ±4.5V to ±20V dual)
- Switching speed characteristics (Ton/Toff: 250ns/350ns maximum)
- Charge injection performance (120pC)
- Channel capacitance values (55pF off-state)
- Leakage current specification (500pA maximum)
- Crosstalk performance (-59dB @ 1MHz)
- Temperature operating range (-40°C to 85°C)
- Physical package format (16-SOIC surface mount)
Only parts meeting all these parameters across their full electrical and mechanical specifications qualify as direct substitutes.
Parameter Comparison
| Parameter | MAX4603EWE (Main Part) | MAX4603EWE+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPST - NO/NC | SPST - NO/NC |
| Number of Circuits | 4 | 4 |
| On-State Resistance (Max) | 2.5Ohm | 2.5Ohm |
| Channel-to-Channel Matching (ΔRon) | 100mOhm | 100mOhm |
| 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) | 250ns, 350ns | 250ns, 350ns |
| Charge Injection | 120pC | 120pC |
| Channel Capacitance (CS(off), CD(off)) | 55pF, 55pF | 55pF, 55pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 500pA |
| Crosstalk | -59dB @ 1MHz | -59dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm 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 MAX4603EWE+ is the direct functional equivalent of the MAX4603EWE, with identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the MAX4603EWE is obsolete, while the MAX4603EWE+ maintains active production status.
The MAX4603EWE+ additionally provides ROHS3 compliance, whereas the original MAX4603EWE is RoHS non-compliant. For applications subject to RoHS regulatory requirements or environmental compliance mandates, the MAX4603EWE+ is the appropriate selection. Both parts share identical electrical performance, switching characteristics, and package geometry, ensuring direct pin-for-pin and functional compatibility.
Frequently Asked Questions (FAQ)
Q: Can MAX4603EWE+ directly replace MAX4603EWE in existing designs?
A: Yes. The MAX4603EWE+ is electrically and mechanically identical to the MAX4603EWE across all specified parameters. Pin configuration, package dimensions (16-SOIC), and electrical performance are equivalent. Direct substitution is supported without design modification.
Q: What is the primary reason to transition from MAX4603EWE to MAX4603EWE+?
A: The MAX4603EWE is classified as obsolete, creating supply and long-term availability risk. The MAX4603EWE+ is in active production. Additionally, the MAX4603EWE+ meets ROHS3 compliance standards, whereas the original part does not.
Q: Are there differences in supply voltage or switching performance between these parts?
A: No. Both parts operate identically across the full supply voltage range (4.5V to 36V single supply; ±4.5V to ±20V dual supply) and maintain identical switching time specifications (250ns/350ns Ton/Toff maximum).
Q: Does packaging differ between MAX4603EWE and MAX4603EWE+?
A: The electrical package (16-SOIC surface mount) is identical. The MAX4603EWE+ is supplied in tube packaging, while the original part's packaging format is not specified in available documentation.
Q: Are both parts suitable for the same temperature operating range?
A: Yes. Both parts operate across the identical temperature range of -40°C to 85°C (TA).
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