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MAX4504ESA Equivalent & Substitute Parts
Part Overview
The MAX4504ESA is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Analog Devices Inc./Maxim Integrated. This component operates with dual supply voltage (±1V ~ 6V) and features a maximum on-state resistance of 250Ohm in an 8-SOIC surface mount package. The part is currently classified as obsolete, making identification of functionally compatible alternatives essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MAX4504ESA |
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Category | Interface |
| Switch Circuit Type | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 250Ohm |
| Voltage - Supply, Dual (V±) | ±1V ~ 6V |
| Switch Time - Ton (Max) | 150ns |
| Switch Time - Toff (Max) | 100ns |
| 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 | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MAX4504ESA is based on strict electrical and mechanical compatibility criteria:
Primary Substitution Criteria:
- Switch circuit topology: SPST - NC (Normally Closed)
- Multiplexer/Demultiplexer configuration: 1:1
- Number of circuits: 1
- Dual supply voltage range: ±1V ~ 6V
- Package type: 8-SOIC with identical physical dimensions (0.154", 3.90mm Width)
- Operating temperature range: -40°C ~ 85°C (TA)
- Surface mount mounting type
Secondary Compatibility Parameters:
- On-state resistance must not exceed application requirements
- Switch timing characteristics (Ton, Toff) must meet or exceed performance specifications
- Leakage current specifications must be acceptable for the application
- Channel capacitance values must be compatible with circuit design
The substitute parts TS12A4517D and TS12A4517DR (Texas Instruments) satisfy all primary criteria and are pin-compatible alternatives. Both parts maintain the same 8-SOIC package footprint and dual supply voltage specification, enabling direct substitution in existing PCB designs.
Parameter Comparison
| Parameter | MAX4504ESA | TS12A4517D | TS12A4517DR |
|---|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Texas Instruments | Texas Instruments |
| Switch Circuit Type | SPST - NC | SPST - NC | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 | 1:1 |
| Number of Circuits | 1 | 1 | 1 |
| On-State Resistance (Max) | 250Ohm | 20Ohm | 20Ohm |
| Voltage - Supply, Dual (V±) | ±1V ~ 6V | ±1V ~ 6V | ±1V ~ 6V |
| Switch Time - Ton (Max) | 150ns | 75ns | 75ns |
| Switch Time - Toff (Max) | 100ns | 45ns | 45ns |
| Charge Injection | 1pC | -13pC | -13pC |
| Channel Capacitance (CS(off), CD(off)) | 3pF, 3pF | 5.5pF, 5.5pF | 5.5pF, 5.5pF |
| Current - Leakage (IS(off)) (Max) | 1nA | 5nA | 5nA |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
TS12A4517D (Tube Packaging) and TS12A4517DR (Tape & Reel Packaging) are functionally equivalent substitutes for the MAX4504ESA. Both Texas Instruments parts are classified as active products, ensuring long-term availability and supply chain continuity compared to the obsolete MAX4504ESA.
The substitute parts offer improved electrical performance characteristics: on-state resistance is reduced from 250Ohm to 20Ohm, switch timing is faster (75ns/45ns versus 150ns/100ns), and both parts achieve ROHS3 compliance. These enhancements provide superior performance margins in most applications while maintaining full electrical compatibility through identical dual supply voltage specifications and 8-SOIC package geometry.
Selection between TS12A4517D and TS12A4517DR depends on procurement and assembly requirements. TS12A4517D is supplied in tube packaging, suitable for lower-volume applications and manual assembly processes. TS12A4517DR is supplied in tape and reel format, optimized for high-volume automated assembly operations.
Frequently Asked Questions (FAQ)
Q: Are TS12A4517D and TS12A4517DR pin-compatible with MAX4504ESA?
A: Yes. Both Texas Instruments parts maintain identical 8-SOIC package pinout and physical dimensions (0.154", 3.90mm Width), enabling direct PCB footprint compatibility without layout modifications.
Q: What is the difference between TS12A4517D and TS12A4517DR?
A: The parts are electrically identical. TS12A4517D is supplied in tube packaging for lower-volume applications. TS12A4517DR is supplied in tape and reel format for high-volume automated assembly. Selection depends on production volume and assembly process requirements.
Q: Can I use the substitute parts in existing designs without circuit modifications?
A: The substitute parts are functionally compatible with the MAX4504ESA across all specified electrical parameters and operating conditions. The improved on-state resistance (20Ohm versus 250Ohm) and faster switching times provide performance enhancements that are generally beneficial in existing circuit designs. However, circuit-specific validation is necessary to confirm compatibility with particular application requirements.
Q: What is the impact of the lower on-state resistance in the substitute parts?
A: The TS12A4517D and TS12A4517DR feature 20Ohm on-state resistance compared to 250Ohm in the MAX4504ESA. This represents a significant reduction in series resistance, which typically improves signal integrity, reduces power dissipation, and enhances overall circuit performance. Applications designed for the higher resistance of the MAX4504ESA will benefit from this improvement.
Q: Are the substitute parts RoHS compliant?
A: Yes. Both TS12A4517D and TS12A4517DR are ROHS3 compliant, whereas the MAX4504ESA is RoHS non-compliant. This compliance status is advantageous for applications subject to RoHS regulatory requirements.
Q: What is the moisture sensitivity level for these parts?
A: All three parts (MAX4504ESA, TS12A4517D, and TS12A4517DR) have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.
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