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MAX319EPA Equivalent & Substitute Parts
Part Overview
The MAX319EPA is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This 8-DIP through-hole component provides 2:1 multiplexing functionality with 35Ohm on-state resistance, designed for signal routing and switching applications across industrial and commercial temperature ranges. The MAX319EPA is 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 Type | SPDT |
| Multiplexer/Demultiplexer Configuration | 2:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 35Ohm |
| 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 | 3pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 250pA |
| Crosstalk | -85dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX319EPA is determined by strict equivalence across the following critical parameters:
- Switch Circuit Architecture: SPDT topology with 2:1 multiplexer/demultiplexer configuration
- Electrical Performance: On-state resistance of 35Ohm maximum with 2Ohm channel-to-channel matching tolerance
- Supply Voltage Compatibility: Single supply range 10V ~ 30V and dual supply range ±4.5V ~ 20V
- Switching Dynamics: Maximum switch times of 175ns (Ton) and 145ns (Toff)
- Signal Integrity Parameters: Charge injection of 3pC, channel capacitance of 8pF, leakage current of 250pA maximum, and crosstalk performance of -85dB @ 1MHz
- Thermal Operating Range: -40°C to 85°C ambient temperature capability
- Physical Form Factor: 8-DIP through-hole package with 0.300" (7.62mm) pitch
Only components meeting all specified electrical and mechanical parameters qualify as direct substitutes.
Parameter Comparison
| Parameter | MAX319EPA (Main Part) | MAX319EPA+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPDT | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 35Ohm | 35Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm (Max) | 2Ohm (Max) |
| Voltage - Supply, Single (V+) | 10V ~ 30V | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 175ns, 145ns | 175ns, 145ns |
| Charge Injection | 3pC | 3pC |
| Channel Capacitance (CS(off), CD(off)) | 8pF, 8pF | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 250pA | 250pA |
| Crosstalk | -85dB @ 1MHz | -85dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP | 8-PDIP |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Packaging Type | Standard | Tube |
Engineering Selection Recommendations
The MAX319EPA+ serves as the direct functional equivalent to the MAX319EPA. Both components are manufactured by Analog Devices Inc./Maxim Integrated and provide identical electrical performance across all specified parameters. The primary distinction lies in product lifecycle status and regulatory compliance:
The MAX319EPA is classified as obsolete, whereas the MAX319EPA+ maintains active product status with current manufacturing support. The MAX319EPA+ achieves ROHS3 compliance, meeting modern environmental and regulatory requirements, while the original MAX319EPA is RoHS non-compliant. For new designs and systems requiring long-term component availability, the MAX319EPA+ is the appropriate selection. For legacy system maintenance where original specifications must be preserved, the MAX319EPA remains functionally equivalent where inventory permits.
Frequently Asked Questions (FAQ)
Q: Can MAX319EPA+ be used as a direct replacement for MAX319EPA in existing designs?
A: Yes. The MAX319EPA+ provides identical electrical performance and pin compatibility. Both components feature the same SPDT 2:1 switch architecture, 35Ohm on-state resistance, supply voltage ranges, switching times, and operating temperature specifications. The 8-DIP through-hole package dimensions are identical, enabling direct socket substitution.
Q: What is the significance of the product status difference between MAX319EPA and MAX319EPA+?
A: The MAX319EPA is classified as obsolete, indicating discontinued manufacturing and limited inventory availability. The MAX319EPA+ maintains active status with ongoing production support. For applications requiring long-term component sourcing and supply chain continuity, the MAX319EPA+ is the recommended selection.
Q: Does the RoHS compliance difference affect functional compatibility?
A: No. RoHS compliance status reflects manufacturing process and material composition standards, not electrical or mechanical functionality. Both components meet identical performance specifications. The MAX319EPA+ achieves ROHS3 compliance, satisfying modern regulatory requirements for new system designs and procurement policies.
Q: Are there packaging considerations when substituting MAX319EPA with MAX319EPA+?
A: The MAX319EPA+ is supplied in tube packaging, while the original MAX319EPA uses standard packaging. Both components are housed in 8-DIP through-hole packages with identical 0.300" (7.62mm) pitch. Tube packaging affects handling and storage procedures but does not impact electrical performance or board-level installation.
Q: What parameters must remain constant for a component to qualify as a substitute for MAX319EPA?
A: Direct substitution requires equivalence across switch circuit type (SPDT), multiplexer configuration (2:1), on-state resistance (35Ohm maximum), channel matching tolerance (2Ohm maximum), supply voltage ranges (10V ~ 30V single, ±4.5V ~ 20V dual), switching times (175ns/145ns maximum), charge injection (3pC), channel capacitance (8pF), leakage current (250pA maximum), crosstalk performance (-85dB @ 1MHz), operating temperature range (-40°C ~ 85°C), and 8-DIP through-hole package form factor.
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