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MAX4477ASA-T Equivalent & Substitute Parts Reference
Part Overview
The MAX4477ASA-T is a general purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits with push-pull, rail-to-rail output configuration in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for new designs and production continuity. The MAX4477ASA-T operates across a 2.7V to 5.5V supply range with a 10 MHz gain bandwidth product and 3V/µs slew rate, making it suitable for low-power analog signal processing applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | MAX4477ASA-T | — |
| Manufacturer | Analog Devices Inc./Maxim Integrated | — |
| Product Status | Obsolete | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Output Type | Push-Pull, Rail-to-Rail | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Gain Bandwidth Product | 10 | MHz |
| Slew Rate | 3 | V/µs |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 70 | µV |
| Current - Supply | 2.5 (x2 Channels) | mA |
| Current - Output / Channel | 48 | mA |
| Operating Temperature | -40 to 125 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the MAX4477ASA-T is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Package type: 8-SOIC surface mount form factor
- Number of circuits: Dual (2) operational amplifiers
- Output configuration: Rail-to-rail capability
- Supply voltage range: 2.7V to 5.5V minimum compatibility
- Operating temperature range: -40°C to 125°C
- Surface mount mounting type
Secondary Compatibility Parameters:
- Gain bandwidth product: 10 MHz or higher
- Slew rate: 3V/µs or higher
- Input bias current: 1 pA or lower
- Input offset voltage: 70 µV or lower
- Output current per channel: 48 mA or higher
Substitutes are grouped into two categories: direct packaging equivalents (identical 8-SOIC package) and functional alternatives that maintain electrical compatibility within the specified parameter ranges. All substitute parts listed maintain ROHS3 compliance, MSL Level 1 rating, and operate within the -40°C to 125°C temperature specification.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Number of Circuits | Output Type | Package | GBW (MHz) | Slew Rate (V/µs) | Supply Min (V) | Supply Max (V) | Input Bias (pA) | Input Offset (µV) | Output Current (mA) | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MAX4477ASA-T | Analog Devices | Obsolete | General Purpose | 2 | Push-Pull, Rail-to-Rail | 8-SOIC | 10 | 3 | 2.7 | 5.5 | 1 | 70 | 48 | -40 to 125 |
| MAX4477ASA+T | Analog Devices | Active | General Purpose | 2 | Push-Pull, Rail-to-Rail | 8-SOIC | 10 | 3 | 2.7 | 5.5 | 1 | 70 | 48 | -40 to 125 |
| AD8606ARZ | Analog Devices | Active | CMOS | 2 | Rail-to-Rail | 8-SOIC | 10 | 5 | 2.7 | 5.5 | 1 | 80 | 80 | -40 to 125 |
| AD8606ARZ-REEL | Analog Devices | Active | CMOS | 2 | Rail-to-Rail | 8-SOIC | 10 | 5 | 2.7 | 5.5 | 1 | 80 | 80 | -40 to 125 |
| AD8606ARZ-REEL7 | Analog Devices | Active | CMOS | 2 | Rail-to-Rail | 8-SOIC | 10 | 5 | 2.7 | 5.5 | 1 | 80 | 80 | -40 to 125 |
| LMV358ID | Texas Instruments | Last Time Buy | General Purpose | 2 | Rail-to-Rail | 8-SOIC | 1 | 1 | 2.7 | 5.5 | 15000 | 1700 | 40 | -40 to 125 |
| LMV358IDRG4 | Texas Instruments | Discontinued at DiGi Electronics | General Purpose | 2 | Rail-to-Rail | 8-SOIC | 1 | 1 | 2.7 | 5.5 | 15000 | 1700 | 40 | -40 to 125 |
| LMV358M/NOPB | Texas Instruments | Active | General Purpose | 2 | Rail-to-Rail | 8-SOIC | 1 | 1 | 2.7 | 5.5 | 15000 | 1700 | 160 | -40 to 125 |
| LMV358MX/NOPB | Texas Instruments | Active | General Purpose | 2 | Rail-to-Rail | 8-SOIC | 1 | 1 | 2.7 | 5.5 | 15000 | 1700 | 160 | -40 to 125 |
| LMV358QD | Texas Instruments | Last Time Buy | General Purpose | 2 | Rail-to-Rail | 8-SOIC | 1 | 1 | 2.7 | 5.5 | 15000 | 1700 | 40 | -40 to 125 |
Engineering Selection Recommendations
Direct Equivalent (Highest Compatibility):
The MAX4477ASA+T represents the direct active equivalent to the obsolete MAX4477ASA-T. Both parts share identical electrical specifications, package configuration, and performance characteristics. The MAX4477ASA+T is currently in active production status with 5400 units in stock, making it the primary replacement for existing MAX4477ASA-T designs. This substitution requires no circuit redesign or validation.
Analog Devices CMOS Alternative (AD8606 Series):
The AD8606ARZ, AD8606ARZ-REEL, and AD8606ARZ-REEL7 variants offer enhanced performance characteristics while maintaining full electrical compatibility. These CMOS-based amplifiers provide superior slew rate (5V/µs versus 3V/µs), higher output current capability (80 mA versus 48 mA), and reduced supply current consumption (1 mA versus 2.5 mA per channel). All three variants are in active production with substantial inventory availability (1935 to 23664 units). The AD8606 series maintains identical 8-SOIC packaging, supply voltage range (2.7V to 5.5V), operating temperature range (-40°C to 125°C), and ROHS3 compliance. These parts are suitable for applications requiring improved dynamic performance.
Texas Instruments LMV358 Series (Functional Substitutes):
The LMV358 family from Texas Instruments provides functional substitution with trade-offs in performance specifications. The LMV358M/NOPB and LMV358MX/NOPB are currently in active production status with high inventory levels (1898 and 155100 units respectively). These parts maintain the 8-SOIC package, dual-circuit configuration, rail-to-rail output, and -40°C to 125°C operating range. However, the LMV358 series exhibits reduced gain bandwidth product (1 MHz versus 10 MHz), lower slew rate (1V/µs versus 3V/µs), higher input bias current (15 nA versus 1 pA), and significantly higher input offset voltage (1.7 mV versus 70 µV). The LMV358 series is appropriate only for applications where bandwidth and slew rate requirements are less stringent than the original MAX4477ASA-T specification.
The LMV358ID and LMV358QD variants are designated as Last Time Buy or Discontinued at DiGi Electronics, indicating limited future availability and are not recommended for new designs.
Compliance and Certification:
All substitute parts listed maintain ROHS3 compliance, MSL Level 1 moisture sensitivity rating, and REACH unaffected status, matching the original MAX4477ASA-T certifications. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.
Frequently Asked Questions (FAQ)
Q: Can the MAX4477ASA+T be used as a direct replacement for MAX4477ASA-T without circuit modification?
A: Yes. The MAX4477ASA+T is electrically and mechanically identical to the MAX4477ASA-T. Both parts feature identical gain bandwidth product (10 MHz), slew rate (3V/µs), input bias current (1 pA), input offset voltage (70 µV), output current (48 mA), and supply voltage range (2.7V to 5.5V). The only difference is product status: MAX4477ASA+T is active production while MAX4477ASA-T is obsolete. No circuit redesign, PCB layout modification, or functional testing is required.
Q: What are the key differences between the AD8606 series and the original MAX4477ASA-T?
A: The AD8606 series maintains identical package (8-SOIC), circuit count (2), supply range (2.7V to 5.5V), and temperature range (-40°C to 125°C). Performance improvements include higher slew rate (5V/µs versus 3V/µs), greater output current (80 mA versus 48 mA), and lower supply current (1 mA versus 2.5 mA per channel). Input specifications are comparable: input bias current remains 1 pA, and input offset voltage increases slightly to 80 µV. The AD8606 uses CMOS technology versus the general purpose topology of the MAX4477ASA-T. These differences make the AD8606 suitable for applications requiring faster signal transitions and higher output drive capability.
Q: Why do the LMV358 parts show significantly different performance specifications?
A: The LMV358 series represents a different design approach optimized for ultra-low power consumption and cost efficiency rather than high-speed performance. The LMV358 achieves 210 µA supply current (versus 2.5 mA for MAX4477ASA-T) at the cost of reduced bandwidth (1 MHz versus 10 MHz) and slower slew rate (1V/µs versus 3V/µs). Input bias current is higher (15 nA versus 1 pA) and input offset voltage is substantially higher (1.7 mV versus 70 µV). The LMV358 is appropriate only for low-frequency signal conditioning applications where power consumption is critical and bandwidth requirements are minimal.
Q: Are all substitute parts available in the same packaging options?
A: All substitute parts listed are available in 8-SOIC surface mount package, matching the original MAX4477ASA-T form factor. Packaging variants differ in tape/reel configurations: MAX4477ASA+T is available in Cut Tape and Digi-Reel; AD8606 variants are available in Tube or Cut Tape/Digi-Reel configurations; LMV358 parts are available in Tube or Cut Tape/Digi-Reel. These packaging differences do not affect electrical performance or PCB compatibility.
Q: Which substitute part should be selected for new product designs?
A: For new designs requiring performance equivalent to the original MAX4477ASA-T specification, select MAX4477ASA+T (direct equivalent, active production) or AD8606ARZ-REEL7 (enhanced performance, highest inventory). The MAX4477ASA+T is recommended when exact specification matching is required. The AD8606 series is recommended when improved slew rate and output current capability provide system benefits. The LMV358 series should be selected only when ultra-low power consumption justifies accepting reduced bandwidth and increased offset voltage.
Q: What is the inventory status of each substitute part?
A: MAX4477ASA+T: 5400 units (active production). AD8606ARZ: 1935 units (active). AD8606ARZ-REEL: 2200 units (active). AD8606ARZ-REEL7: 23664 units (active, highest availability). LMV358M/NOPB: 1898 units (active). LMV358MX/NOPB: 155100 units (active, highest availability among LMV358 variants). LMV358ID: 2200 units (Last Time Buy). LMV358IDRG4: 15639 units (Discontinued at DiGi Electronics). LMV358QD: 3309 units (Last Time Buy).
Q: Are there any temperature range limitations when substituting parts?
A: All substitute parts maintain the original -40°C to 125°C operating temperature range, with one exception: LMV358IDR (UMW manufacturer) operates only -25°C to 85°C and is not recommended as a substitute due to reduced temperature coverage. All other parts are fully compatible across the full temperature specification.
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