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MAX4281ESA+ Equivalent & Substitute Parts Reference
Part Overview
The MAX4281ESA+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail applications in 8-SOIC surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX4281ESA+ operates across a 2.5V to 5.5V supply range with a 0.7V/µs slew rate and 2MHz gain bandwidth product, suitable for low-power general-purpose amplification circuits.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.7 | V/µs |
| Gain Bandwidth Product | 2 | MHz |
| Current - Input Bias | 50 | pA |
| Voltage - Input Offset | 500 | µV |
| Current - Supply | 320 | µA |
| Current - Output / Channel | 65 | mA |
| Voltage - Supply Span (Min) | 2.5 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the MAX4281ESA+ is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Package compatibility: 8-SOIC (0.154", 3.90mm Width) surface mount only
- Amplifier type: General purpose, single circuit
- Output configuration: Rail-to-rail operation
- Supply voltage range: Minimum 2.5V, maximum 5.5V
- Operating temperature: Minimum -40°C, maximum 85°C
- RoHS3 compliance and MSL 1 rating
Secondary Compatibility Parameters:
- Slew rate: 0.7V/µs or greater
- Gain bandwidth product: 2MHz or greater
- Input bias current: 50pA or lower
- Input offset voltage: 500µV or lower
- Supply current: 320µA or lower
- Output current per channel: 65mA or greater
Substitute parts must satisfy all primary criteria and maintain compatibility within the secondary parameter ranges to ensure functional equivalence in existing circuit designs.
Parameter Comparison
| Parameter | MAX4281ESA+ | MCP601-E/SN | TLC4501AID | TLC4501AIDR | TLV2471ID | TS1871IDT |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices | Microchip | Texas Instruments | Texas Instruments | Texas Instruments | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Slew Rate (V/µs) | 0.7 | 2.3 | 2.5 | 2.5 | 1.5 | 0.6 |
| Gain Bandwidth Product (MHz) | 2 | 2.8 | 4.7 | 4.7 | 2.8 | 1.8 |
| Current - Input Bias (pA) | 50 | 1 | 1 | 1 | 2.5 | 70000 |
| Voltage - Input Offset (µV) | 500 | 700 | 10 | 10 | 250 | 100 |
| Current - Supply (µA) | 320 | 230 | 1000 | 1000 | 600 | 500 |
| Current - Output / Channel (mA) | 65 | 22 | 50 | 50 | 35 | 80 |
| Voltage - Supply Span Min (V) | 2.5 | 2.7 | 4 | 4 | 2.7 | 1.8 |
| Voltage - Supply Span Max (V) | 5.5 | 6 | 6 | 6 | 6 | 6 |
| Operating Temperature (°C) | -40 to 85 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 | 1 | 1 | 1 | 1 | 1 |
Engineering Selection Recommendations
Primary Substitutes (Active Status):
The MCP601-E/SN (Microchip Technology) and TLC4501AID (Texas Instruments) are the preferred substitutes for the obsolete MAX4281ESA+. Both devices maintain active product status, ensuring long-term availability and manufacturing support. The MCP601-E/SN operates within the 2.7V to 6V supply range, compatible with the MAX4281ESA+ 2.5V minimum requirement when used in 2.7V or higher systems. The TLC4501AID requires a minimum 4V supply, limiting its use to higher voltage applications but offering superior input offset voltage (10µV) and lower supply current (1mA).
Secondary Substitutes (Active Status):
The TLC4501AIDR (Tape & Reel packaging) provides identical electrical specifications to the TLC4501AID with extended temperature range (-40°C to 125°C). The TLV2471ID (Texas Instruments) offers active status with a 2.7V minimum supply voltage, making it suitable for lower voltage designs. The TS1871IDT (STMicroelectronics) provides the widest supply voltage range (1.8V to 6V) and highest output current capability (80mA), though its slew rate (0.6V/µs) and gain bandwidth product (1.8MHz) fall below the MAX4281ESA+ specifications.
Compliance Considerations:
All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original device specifications. Selection should prioritize active product status for production continuity and long-term component availability.
Frequently Asked Questions (FAQ)
Q: Can the MCP601-E/SN directly replace the MAX4281ESA+ in all applications?
A: The MCP601-E/SN is compatible with applications operating at 2.7V or higher. Designs requiring 2.5V minimum supply voltage operation must use alternative substitutes such as the TLV2471ID or TS1871IDT. Package compatibility (8-SOIC) and rail-to-rail output configuration are identical.
Q: What is the primary difference between TLC4501AID and TLC4501AIDR?
A: Both devices share identical electrical specifications. The TLC4501AIDR is supplied in Tape & Reel (TR) packaging for automated assembly, while the TLC4501AID is supplied in Tube packaging. Selection depends on production assembly requirements and packaging preferences.
Q: Is the TS1871IDT suitable for high-speed applications?
A: The TS1871IDT has a slew rate of 0.6V/µs and gain bandwidth product of 1.8MHz, both below the MAX4281ESA+ specifications (0.7V/µs and 2MHz respectively). It is suitable only for applications where these lower performance parameters are acceptable.
Q: Which substitute offers the lowest supply current consumption?
A: The TLC4501 family (TLC4501AID, TLC4501AIDR, TLC4501CD, TLC4501ID) offers the lowest supply current at 1mA, compared to the MAX4281ESA+ at 320µA. The MCP601-E/SN provides 230µA, the lowest among active substitutes.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original MAX4281ESA+ specifications.
Q: What supply voltage range should I use for the TLC4501AID?
A: The TLC4501AID requires a minimum supply voltage of 4V and maximum of 6V. Applications designed for the MAX4281ESA+ 2.5V minimum supply voltage cannot use this substitute without circuit redesign.
Q: Can I use TS1871IDT in a 2.5V supply application?
A: Yes. The TS1871IDT operates across 1.8V to 6V supply range, making it compatible with 2.5V applications. However, its slew rate (0.6V/µs) is lower than the MAX4281ESA+ (0.7V/µs), which may affect circuit performance in time-sensitive applications.
Q: What is the temperature operating range difference between substitutes?
A: The MAX4281ESA+ operates from -40°C to 85°C. Most active substitutes (MCP601-E/SN, TLC4501AID, TLC4501AIDR, TLV2471ID, TS1871IDT) extend to -40°C to 125°C, providing wider temperature coverage for industrial and extended-range applications.
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