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MAX333ACWP Equivalent & Substitute Parts
Part Overview
The MAX333ACWP is a 4-circuit SPDT analog switch IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-SOIC surface mount package. This component functions as a 2:1 multiplexer/demultiplexer with 45Ohm on-state resistance, designed for signal routing and switching applications in analog systems.
The MAX333ACWP carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for systems utilizing this interface component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Configuration | SPDT (Single Pole Double Throw) |
| Multiplexer/Demultiplexer Circuit | 2:1 |
| Number of Circuits | 4 |
| On-State Resistance (Max) | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm (Max) |
| Voltage - Supply, Single (V+) | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 175ns, 145ns |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 5pF |
| Current - Leakage (IS(off)) (Max) | 250pA |
| Crosstalk | -78dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX333ACWP is determined by the following critical parameters:
- Functional equivalence: SPDT switch circuit, 2:1 multiplexer/demultiplexer configuration, 4 circuits
- Electrical compatibility: On-state resistance of 45Ohm, matching channel-to-channel resistance characteristics
- Package compatibility: 20-SOIC surface mount package with identical physical dimensions
- Supply voltage range: Ability to operate within or exceed the original supply voltage specifications
- Switching performance: Switch time and charge injection characteristics suitable for the application
- Leakage and crosstalk: Current leakage and crosstalk performance within acceptable limits
Substitute parts are grouped into two categories:
Category 1 - Direct Analog Devices Substitutes: MAX333ACWP+ and ADG333 series parts maintain the same base product lineage with identical or superior electrical performance and active product status.
Category 2 - Cross-Manufacturer Alternatives: DG333 series parts from Vishay Siliconix provide functional equivalence with comparable electrical specifications and active product status.
Parameter Comparison
| Parameter | MAX333ACWP | MAX333ACWP+ | ADG333ABRZ | ADG333ABRZ-REEL | DG333ADW-E3 | DG333ADW-T1-E3 |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc. | Analog Devices Inc. | Vishay Siliconix | Vishay Siliconix |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Switch Circuit | SPDT | SPDT | SPDT | SPDT | SPDT | SPDT |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| On-State Resistance (Max) | 45Ohm | 45Ohm | 45Ohm | 45Ohm | 45Ohm | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm (Max) | 2Ohm (Max) | 5Ohm | 5Ohm | 2Ohm (Max) | 2Ohm (Max) |
| Voltage - Supply, Single (V+) | 10V ~ 30V | 10V ~ 30V | 3V ~ 30V | 3V ~ 30V | 5V ~ 40V | 5V ~ 40V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V | ±3V ~ 20V | ±3V ~ 20V | ±4V ~ 22V | ±4V ~ 22V |
| Switch Time (Ton, Toff) (Max) | 175ns, 145ns | 175ns, 145ns | 90ns, 80ns (Typ) | 90ns, 80ns (Typ) | 175ns, 145ns | 175ns, 145ns |
| Charge Injection | 2pC | 2pC | 2pC | 2pC | 10pC | 10pC |
| Channel Capacitance (CS(off), CD(off)) | 5pF | 5pF | 7pF | 7pF | 8pF | 8pF |
| Current - Leakage (IS(off)) (Max) | 250pA | 250pA | 250pA | 250pA | 250pA | 250pA |
| Crosstalk | -78dB @ 1MHz | -78dB @ 1MHz | -85dB @ 1MHz | -85dB @ 1MHz | -80dB @ 1MHz | -80dB @ 1MHz |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
MAX333ACWP+ (Direct Replacement)
The MAX333ACWP+ is the primary substitute for the obsolete MAX333ACWP. Both parts share identical electrical specifications, package configuration, and supply voltage ranges. The MAX333ACWP+ carries Active product status and ROHS3 compliance, making it the preferred choice for new designs and production continuity. Packaging is available in Tube format.
ADG333ABRZ and ADG333ABRZ-REEL (Enhanced Performance Alternative)
The ADG333 series represents an enhanced alternative from Analog Devices Inc. with superior performance characteristics: faster switching times (90ns/80ns typical versus 175ns/145ns maximum), improved crosstalk performance (-85dB versus -78dB @ 1MHz), and extended operating temperature range (-40°C to 85°C). These parts maintain 45Ohm on-state resistance and 4-circuit SPDT configuration. Channel-to-channel matching is 5Ohm versus 2Ohm for the original part. Both ADG333ABRZ (Tube packaging) and ADG333ABRZ-REEL (Cut Tape & Digi-Reel packaging) carry Active product status and ROHS3 compliance. The ADG333 series supports lower minimum supply voltages (3V single supply, ±3V dual supply).
DG333ADW-E3 and DG333ADW-T1-E3 (Cross-Manufacturer Alternative)
The Vishay Siliconix DG333 series provides functional equivalence with Active product status and ROHS3 compliance. These parts maintain 45Ohm on-state resistance, 2Ohm channel-to-channel matching, and identical switch timing to the original MAX333ACWP (175ns/145ns). Operating temperature range extends to -40°C to 85°C. Supply voltage range is 5V to 40V (single) and ±4V to 22V (dual). Charge injection is higher at 10pC, and channel capacitance is 8pF. DG333ADW-E3 is available in Tube packaging; DG333ADW-T1-E3 is available in Tape & Reel format.
Frequently Asked Questions (FAQ)
Q: Can MAX333ACWP+ be used as a direct drop-in replacement for MAX333ACWP?
A: Yes. The MAX333ACWP+ maintains identical electrical specifications, supply voltage ranges, switch timing, and 20-SOIC package configuration. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus non-compliant).
Q: What are the key differences between ADG333ABRZ and the original MAX333ACWP?
A: The ADG333ABRZ offers faster switching times (90ns/80ns typical), improved crosstalk (-85dB), extended temperature range (-40°C to 85°C), and lower minimum supply voltages (3V single, ±3V dual). Channel-to-channel matching is 5Ohm versus 2Ohm. On-state resistance remains 45Ohm. These differences represent performance enhancements suitable for applications requiring faster switching or wider temperature operation.
Q: Are DG333ADW parts suitable replacements for MAX333ACWP?
A: Yes, with considerations. DG333ADW-E3 and DG333ADW-T1-E3 maintain 45Ohm on-state resistance, 2Ohm channel-to-channel matching, and identical switch timing (175ns/145ns). However, charge injection is 10pC versus 2pC, and channel capacitance is 8pF versus 5pF. These differences may affect performance in high-frequency or precision analog applications. Extended temperature range (-40°C to 85°C) and higher supply voltage ceiling (40V) provide additional operational flexibility.
Q: What packaging options are available for substitute parts?
A: MAX333ACWP+ is available in Tube packaging. ADG333ABRZ is available in Tube packaging; ADG333ABRZ-REEL is available in Cut Tape & Digi-Reel format. DG333ADW-E3 is available in Tube packaging; DG333ADW-T1-E3 is available in Tape & Reel format. All parts use identical 20-SOIC surface mount package dimensions.
Q: Do all substitute parts meet RoHS compliance requirements?
A: All substitute parts listed (MAX333ACWP+, ADG333ABRZ, ADG333ABRZ-REEL, DG333ADW-E3, DG333ADW-T1-E3) carry ROHS3 Compliant status. The original MAX333ACWP is RoHS non-compliant.
Q: Which substitute part offers the best performance for high-speed switching applications?
A: The ADG333ABRZ and ADG333ABRZ-REEL offer the fastest switching times at 90ns/80ns (typical), compared to 175ns/145ns (maximum) for MAX333ACWP, MAX333ACWP+, and DG333 series parts. These parts also provide superior crosstalk performance at -85dB @ 1MHz.
Q: Are there supply voltage compatibility considerations when selecting a substitute?
A: Yes. The original MAX333ACWP requires 10V to 30V (single supply) or ±4.5V to ±20V (dual supply). ADG333 series parts support lower minimum voltages (3V single, ±3V dual), providing greater flexibility for low-voltage applications. DG333 series parts require 5V minimum (single supply) or ±4V (dual supply) but support higher maximum voltages (40V single, ±22V dual).
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