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MAX4501EPA Equivalent & Substitute Parts
Part Overview
The MAX4501EPA is a single-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This component functions as an electronic switch with a 250Ohm on-state resistance and operates across a 2V to 12V single supply voltage range. The device is packaged in an 8-DIP through-hole configuration and is rated for -40°C to 85°C operating temperatures.
The MAX4501EPA is classified as obsolete. Locating equivalent or substitute parts is necessary for new designs, production continuity, and system upgrades where this component is no longer readily available from primary sources or where design improvements are required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 250Ohm |
| Voltage - Supply, Single (V+) | 2V ~ 12V |
| Switch Time (Ton, Toff) (Max) | 75ns, 50ns |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 3pF, 3pF |
| Current - Leakage (IS(off)) (Max) | 1nA |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX4501EPA is determined by strict adherence to the following electrical and mechanical parameters:
Critical Substitution Criteria:
- Switch circuit topology: SPST - NO configuration
- Circuit count: Single circuit (1:1 multiplexer/demultiplexer ratio)
- Supply voltage range: Must encompass or exceed 2V ~ 12V
- On-state resistance: Must be equal to or lower than 250Ohm
- Switch timing: Ton and Toff must meet or exceed performance (lower values acceptable)
- Leakage current: Must not exceed 1nA
- Operating temperature range: Must cover -40°C ~ 85°C minimum
- Package: 8-DIP through-hole configuration with 0.300" (7.62mm) spacing
- Pin compatibility: Identical pinout required
The TS12A4514P from Texas Instruments meets all substitution criteria for the MAX4501EPA. This part maintains identical circuit topology, package form factor, and operating temperature range while providing superior electrical performance in on-state resistance (10Ohm vs. 250Ohm) and switch timing characteristics.
Parameter Comparison
| Parameter | MAX4501EPA | TS12A4514P | Compatibility |
|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Texas Instruments | Different manufacturer |
| Switch Circuit Type | SPST - NO | SPST - NO | Identical |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 | Identical |
| Number of Circuits | 1 | 1 | Identical |
| On-State Resistance (Max) | 250Ohm | 10Ohm | TS12A4514P superior |
| Voltage - Supply, Single (V+) | 2V ~ 12V | 2.7V ~ 12V | TS12A4514P range slightly higher minimum |
| Switch Time Ton (Max) | 75ns | 75ns | Identical |
| Switch Time Toff (Max) | 50ns | 45ns | TS12A4514P superior |
| Charge Injection | 1pC | -11.5pC | Different characteristic |
| Channel Capacitance (CS(off), CD(off)) | 3pF, 3pF | 7.5pF, 7.5pF | TS12A4514P higher capacitance |
| Current - Leakage (IS(off)) (Max) | 1nA | 1nA | Identical |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | Identical |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | TS12A4514P compliant |
| Product Status | Obsolete | Last Time Buy | Both end-of-life |
Engineering Selection Recommendations
For Direct Substitution:
The TS12A4514P is a direct functional substitute for the MAX4501EPA in applications requiring SPST-NO switching with identical package and pinout. The substitute part provides improved electrical performance with significantly lower on-state resistance (10Ohm vs. 250Ohm) and faster turn-off switching (45ns vs. 50ns).
Compliance Considerations:
The MAX4501EPA is RoHS non-compliant, while the TS12A4514P is ROHS3 compliant. Systems requiring RoHS compliance must transition to the TS12A4514P or identify alternative solutions. Both parts are REACH Unaffected and classified under ECCN EAR99.
Product Status Impact:
Both the MAX4501EPA (Obsolete) and TS12A4514P (Last Time Buy) are end-of-life components. The TS12A4514P currently maintains higher inventory availability (2493 Pcs) compared to the MAX4501EPA (731 Pcs). For long-term production requirements, evaluation of next-generation analog switch solutions beyond these legacy parts is recommended.
Supply Voltage Consideration:
The TS12A4514P minimum supply voltage is 2.7V, compared to 2.0V for the MAX4501EPA. Applications operating below 2.7V require verification that the substitute part meets system requirements.
Frequently Asked Questions (FAQ)
Q: Can the TS12A4514P directly replace the MAX4501EPA in existing designs?
A: Yes, the TS12A4514P is a direct pin-compatible substitute. Both parts use identical 8-DIP through-hole packaging with 0.300" (7.62mm) spacing. No PCB modifications are required for physical substitution. Electrical performance of the TS12A4514P exceeds the MAX4501EPA specifications in on-state resistance and switching speed.
Q: What are the key electrical differences between these parts?
A: The primary differences are on-state resistance (TS12A4514P: 10Ohm vs. MAX4501EPA: 250Ohm), minimum supply voltage (TS12A4514P: 2.7V vs. MAX4501EPA: 2.0V), and channel capacitance (TS12A4514P: 7.5pF vs. MAX4501EPA: 3pF). Both maintain identical leakage current (1nA) and operating temperature range (-40°C to 85°C).
Q: Are there compliance differences between these parts?
A: Yes. The MAX4501EPA is RoHS non-compliant, while the TS12A4514P is ROHS3 compliant. For applications requiring RoHS compliance, the TS12A4514P is the appropriate selection.
Q: What is the minimum supply voltage requirement for the TS12A4514P?
A: The TS12A4514P operates with a minimum supply voltage of 2.7V. The MAX4501EPA operates at 2.0V minimum. Applications requiring operation below 2.7V must retain the MAX4501EPA or identify alternative components.
Q: Are both parts still in production?
A: No. The MAX4501EPA is classified as Obsolete, and the TS12A4514P is classified as Last Time Buy. Both are end-of-life components. Current inventory availability is limited, and long-term designs should evaluate next-generation analog switch solutions.
Q: What is the significance of the charge injection difference?
A: Charge injection values differ between parts (MAX4501EPA: 1pC vs. TS12A4514P: -11.5pC). This parameter affects signal integrity in precision analog applications. System-level evaluation is required to determine if this difference impacts application performance.
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