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MAX308CUE Equivalent & Substitute Parts
Part Overview
The MAX308CUE is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated. It features a single circuit configuration with 100Ohm on-state resistance and is housed in a 16-TSSOP surface mount package. The device supports both single supply (5V to 30V) and dual supply (±5V to ±20V) operation, making it suitable for signal routing and switching applications in analog systems.
The MAX308CUE is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Multiplexer/Demultiplexer Circuit Configuration | 8:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 1.5Ohm |
| Voltage - Supply, Single (V+) | 5V ~ 30V |
| Voltage - Supply, Dual (V±) | ±5V ~ ±20V |
| Switch Time (Ton, Toff) (Max) | 150ns, 150ns |
| Charge Injection | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 3pF, 26pF |
| Current - Leakage (IS(off)) (Max) | 750pA |
| Crosstalk | -92dB @ 100kHz |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX308CUE is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must satisfy the following criteria:
- Identical multiplexer/demultiplexer circuit configuration (8:1)
- Single circuit topology
- Matching on-state resistance specification (100Ohm maximum)
- Equivalent channel-to-channel matching tolerance (1.5Ohm)
- Compatible supply voltage ranges (single and dual supply)
- Equivalent or superior switching performance (150ns maximum)
- Identical or superior charge injection and leakage specifications
- Matching package type and physical dimensions (16-TSSOP)
- Surface mount capability
- Compatible operating temperature range
The MAX308CUE+ meets all these criteria and is therefore a direct electrical and mechanical equivalent.
Parameter Comparison
| Parameter | MAX308CUE | MAX308CUE+ |
|---|---|---|
| Multiplexer/Demultiplexer Circuit | 8:1 | 8:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 100Ohm | 100Ohm |
| Channel-to-Channel Matching (ΔRon) | 1.5Ohm | 1.5Ohm |
| Voltage - Supply, Single (V+) | 5V ~ 30V | 5V ~ 30V |
| Voltage - Supply, Dual (V±) | ±5V ~ ±20V | ±5V ~ ±20V |
| Switch Time (Ton, Toff) (Max) | 150ns, 150ns | 150ns, 150ns |
| Charge Injection | 2pC | 2pC |
| Channel Capacitance (CS(off), CD(off)) | 3pF, 26pF | 3pF, 26pF |
| Current - Leakage (IS(off)) (Max) | 750pA | 750pA |
| Crosstalk | -92dB @ 100kHz | -92dB @ 100kHz |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Package / Case | 16-TSSOP | 16-TSSOP |
| Mounting Type | Surface Mount | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
The MAX308CUE is obsolete and no longer in active production. The MAX308CUE+ is the direct substitute, classified as active product status and available in production quantities.
From a compliance perspective, the MAX308CUE is RoHS non-compliant, while the MAX308CUE+ is ROHS3 compliant. Both parts maintain REACH Unaffected status and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.
For new designs or ongoing production requiring this 8:1 multiplexer functionality, the MAX308CUE+ is the appropriate selection. The packaging difference (tube for MAX308CUE+ versus unspecified for MAX308CUE) does not affect electrical performance or PCB integration.
Frequently Asked Questions (FAQ)
Q: Can MAX308CUE+ be used as a direct replacement for MAX308CUE in existing designs?
A: Yes. The MAX308CUE+ is electrically and mechanically identical to the MAX308CUE across all specified parameters. Pin configuration, package dimensions, and electrical performance are equivalent. Direct substitution on PCBs is possible without design modification.
Q: What is the difference between MAX308CUE and MAX308CUE+?
A: The primary differences are product status and regulatory compliance. The MAX308CUE is obsolete and RoHS non-compliant. The MAX308CUE+ is active production and ROHS3 compliant. Electrical specifications and package type are identical.
Q: Are there any other equivalent 8:1 multiplexer alternatives from other manufacturers?
A: This document addresses substitutes within the specified parameter set provided. Only the MAX308CUE+ meets the complete electrical and mechanical equivalence criteria for the MAX308CUE.
Q: What is the significance of the 16-TSSOP package?
A: The 16-TSSOP (Thin Shrink Small Outline Package) is a surface mount package with 0.173" width and 4.40mm overall width. This package type is standard for this device class and ensures compatibility with automated assembly processes and standard PCB layouts.
Q: Does the MSL rating affect substitution?
A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. This specification is identical between the main part and substitute, confirming compatibility in standard storage and handling conditions.
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