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MAX4544ESA Equivalent & Substitute Parts
Part Overview
The MAX4544ESA is a single-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a 2:1 multiplexer/demultiplexer with 60Ohm on-state resistance in an 8-SOIC surface mount package. The MAX4544ESA is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPDT |
| Multiplexer/Demultiplexer Configuration | 2:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 60Ohm |
| Channel-to-Channel Matching (ΔRon) | 800mOhm |
| Supply Voltage Range (Single) | 2.7V ~ 12V |
| Switch Time (Ton/Toff Max) | 100ns / 75ns |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off)/CD(off)) | 8pF / 8pF |
| Leakage Current (IS(off) Max) | 100pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX4544ESA is determined by strict equivalence across all electrical and mechanical parameters. The primary substitute identified is the MAX4544ESA+, which maintains identical functional specifications including switch circuit topology (SPDT), multiplexer configuration (2:1), on-state resistance (60Ohm), supply voltage range (2.7V ~ 12V), switching characteristics (100ns/75ns), and package form factor (8-SOIC).
The key parameters governing substitution are:
- Switch circuit type and configuration (SPDT, 2:1 multiplexer)
- On-state resistance and channel matching specifications
- Supply voltage operating range
- Switching time performance
- Package and pin compatibility (8-SOIC form factor)
- Operating temperature range (-40°C ~ 85°C)
Parameter Comparison
| Parameter | MAX4544ESA (Main) | MAX4544ESA+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active |
| Switch Circuit | SPDT | SPDT |
| Multiplexer/Demultiplexer Circuit | 2:1 | 2:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 60Ohm | 60Ohm |
| Channel-to-Channel Matching (ΔRon) | 800mOhm | 800mOhm |
| Supply Voltage (V+) | 2.7V ~ 12V | 2.7V ~ 12V |
| Switch Time (Ton Max) | 100ns | 100ns |
| Switch Time (Toff Max) | 75ns | 75ns |
| Charge Injection | 1pC | 1pC |
| Channel Capacitance (CS(off)) | 8pF | 8pF |
| Channel Capacitance (CD(off)) | 8pF | 8pF |
| Leakage Current (IS(off) Max) | 100pA | 100pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging Format | Unspecified | Tube |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS Code | 8542.39.0001 | 8542.39.0001 |
Engineering Selection Recommendations
The MAX4544ESA+ is the direct functional equivalent of the MAX4544ESA. Both parts share identical electrical specifications and package form factors, ensuring pin-for-pin and functional compatibility. The primary distinction is product lifecycle status: the MAX4544ESA is obsolete while the MAX4544ESA+ maintains active production status.
For new designs or production continuity, the MAX4544ESA+ is the appropriate selection. The substitute offers the additional advantage of ROHS3 compliance, whereas the original MAX4544ESA is RoHS non-compliant. Both parts maintain identical moisture sensitivity levels (MSL 1) and regulatory classifications (REACH Unaffected, ECCN EAR99).
Frequently Asked Questions (FAQ)
Q: Are MAX4544ESA and MAX4544ESA+ pin-compatible? A: Yes. Both parts use the 8-SOIC package with identical pin assignments and electrical characteristics. Direct substitution is possible without circuit modification.
Q: What is the difference between MAX4544ESA and MAX4544ESA+? A: The parts are electrically and functionally identical. The primary differences are product status (obsolete vs. active) and RoHS compliance (non-compliant vs. ROHS3 compliant). The MAX4544ESA+ is supplied in tube packaging.
Q: Can I use MAX4544ESA+ in place of MAX4544ESA in existing designs? A: Yes. The MAX4544ESA+ maintains all electrical specifications, operating ranges, and package dimensions of the original part. No design changes are required.
Q: What are the critical parameters for substitution? A: Switch topology (SPDT 2:1), on-state resistance (60Ohm), supply voltage range (2.7V ~ 12V), switching times (100ns/75ns), and 8-SOIC package form factor must remain constant for functional equivalence.
Q: Is the MAX4544ESA+ suitable for RoHS-compliant applications? A: Yes. The MAX4544ESA+ is ROHS3 compliant, making it suitable for applications requiring RoHS certification. The original MAX4544ESA is not RoHS compliant.
Q: What is the operating temperature range for both parts? A: Both the MAX4544ESA and MAX4544ESA+ operate across -40°C to 85°C, supporting industrial and commercial temperature specifications.
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