MAX475EPD Equivalent & Substitute Parts

Part Overview

The MAX475EPD is a general-purpose operational amplifier featuring four independent circuits in a 14-PDIP through-hole package. Manufactured by Analog Devices Inc./Maxim Integrated, this rail-to-rail amplifier is designed for applications requiring low-power, multi-channel signal conditioning and amplification. The device operates across a supply voltage range of 2.7V to 5.25V with an operating temperature range of -40°C to 85°C.

The MAX475EPD is classified as obsolete, which necessitates identification of functionally equivalent substitute components for new designs and ongoing production support. Substitute parts must maintain compatibility with the 14-PDIP package format and preserve core electrical characteristics including rail-to-rail output capability, four-circuit configuration, and general-purpose amplifier functionality.

Substiute Parts

MAX475EPD

Analog Devices Inc./Maxim IntegratedIn Stock: 982MAX475EPD Datasheet

Current PartRFQ

MCP6294-E/P

Microchip TechnologyIn Stock: 1483MCP6294-E/P Datasheet

MFR RecommendedRFQ

TLV2774AIN

Texas InstrumentsIn Stock: 836TLV2774AIN Datasheet

MFR RecommendedRFQ

TLV2774CN

Texas InstrumentsIn Stock: 4196TLV2774CN Datasheet

MFR RecommendedRFQ

TLV2774IN

Texas InstrumentsIn Stock: 1253TLV2774IN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX475EPD are selected based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following mandatory requirements:

Core Compatibility Criteria:

• Four independent amplifier circuits in single package
• Rail-to-rail output configuration
• 14-PDIP through-hole package format (0.300", 7.62mm)
• General-purpose amplifier classification
• Supply voltage range overlap with original specification (minimum 2.7V to 5.25V envelope)
• Operating temperature range compatibility or extension

Electrical Parameter Alignment: Substitute parts are grouped by their ability to maintain functional equivalence within the application envelope defined by the MAX475EPD. Key differentiating parameters include slew rate, gain-bandwidth product, input bias current, input offset voltage, and supply current consumption. Substitutes may exhibit different performance characteristics within these parameters while maintaining the core four-circuit, rail-to-rail, 14-PDIP architecture.

Product Status Consideration: The MAX475EPD is obsolete. Substitute parts with active or last-time-buy status provide continued component availability for production and design continuity.

Parameter Comparison

Engineering Selection Recommendations

MCP6294-E/P (Microchip Technology)

The MCP6294-E/P is an active product offering direct functional substitution for the MAX475EPD. This device maintains the four-circuit, rail-to-rail configuration in the identical 14-PDIP package. The MCP6294-E/P exhibits lower input bias current (1 pA versus 80 nA) and reduced supply current consumption (1 mA per channel versus 2 mA), providing improved power efficiency. The extended operating temperature range (-40°C to 125°C) exceeds the original specification. The device is ROHS3 compliant, addressing environmental and regulatory requirements absent in the obsolete MAX475EPD. Slew rate and gain-bandwidth product are reduced relative to the original part, requiring verification for applications with stringent dynamic performance requirements.

TLV2774AIN (Texas Instruments)

The TLV2774AIN provides substitution with extended operating temperature range (-40°C to 125°C) and ROHS3 compliance. This CMOS amplifier maintains four circuits and rail-to-rail output in the 14-PDIP package. Input bias current is significantly reduced (2 pA), and supply current consumption is halved (1 mA per channel). The slew rate (10.5 V/µs) and gain-bandwidth product (5.1 MHz) are lower than the MAX475EPD, suitable for applications not requiring the original device's dynamic performance. Product status is last-time-buy, indicating limited future availability.

TLV2774CN (Texas Instruments)

The TLV2774CN is functionally equivalent to the TLV2774AIN with identical electrical specifications. The operating temperature range is restricted to 0°C to 70°C, limiting applicability to commercial-grade temperature environments. This device is ROHS3 compliant with last-time-buy status. Selection of this variant is appropriate only when the reduced temperature range aligns with application requirements.

TLV2774IN (Texas Instruments)

The TLV2774IN matches the TLV2774AIN specification with full operating temperature range (-40°C to 125°C) and ROHS3 compliance. This variant provides equivalent performance to the TLV2774AIN with identical electrical characteristics and last-time-buy product status.

Selection Criteria Summary:

For new designs requiring active product status and extended availability, the MCP6294-E/P is the primary recommendation. For applications where the reduced slew rate and gain-bandwidth product of the TLV2774 series are acceptable, the TLV2774AIN or TLV2774IN provide alternatives with superior temperature range coverage. All substitute parts require verification of dynamic performance characteristics in the specific application circuit before final selection.

Frequently Asked Questions (FAQ)

Q: Can the MAX475EPD be directly replaced with any of the substitute parts without PCB modification?

A: Yes. All substitute parts are packaged in the identical 14-DIP (0.300", 7.62mm) through-hole format with compatible pinout for four-circuit rail-to-rail amplifier configurations. Direct socket substitution is mechanically and electrically feasible. However, circuit performance verification is required due to differences in slew rate, gain-bandwidth product, and input offset voltage specifications.

Q: What is the primary reason the MAX475EPD requires substitution?

A: The MAX475EPD is classified as obsolete by the manufacturer. Substitute parts with active or last-time-buy status ensure continued component availability for production and design continuity.

Q: How do the electrical characteristics of substitute parts compare to the MAX475EPD?

A: All substitute parts maintain the four-circuit, rail-to-rail, 14-PDIP architecture. The MCP6294-E/P and TLV2774 series exhibit lower input bias current and reduced supply current consumption, improving power efficiency. Slew rate and gain-bandwidth product are reduced in the TLV2774 series (10.5 V/µs and 5.1 MHz respectively) compared to the MAX475EPD (17 V/µs and 12 MHz). The MCP6294-E/P maintains intermediate performance (7 V/µs slew rate, 10 MHz gain-bandwidth product). Applications with stringent dynamic performance requirements must evaluate these differences.

Q: Are all substitute parts RoHS compliant?

A: The MAX475EPD is RoHS non-compliant. All substitute parts (MCP6294-E/P, TLV2774AIN, TLV2774CN, TLV2774IN) are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What is the difference between TLV2774AIN, TLV2774CN, and TLV2774IN?

A: These three variants are manufactured by Texas Instruments with identical electrical specifications. The primary difference is operating temperature range: TLV2774AIN and TLV2774IN support -40°C to 125°C, while TLV2774CN is limited to 0°C to 70°C. Selection depends on the application's temperature environment. All three variants have last-time-buy product status.

Q: Which substitute part offers the best long-term availability?

A: The MCP6294-E/P from Microchip Technology is classified as active product, providing the longest availability horizon. The TLV2774 series (TLV2774AIN, TLV2774CN, TLV2774IN) are last-time-buy components with limited future availability.

Q: Can I use the MCP6294-E/P in applications requiring the full 17 V/µs slew rate of the MAX475EPD?

A: The MCP6294-E/P provides 7 V/µs slew rate, which is lower than the MAX475EPD specification. Applications requiring the original slew rate performance must evaluate whether the reduced slew rate is acceptable for the specific circuit function. Circuit simulation or prototype testing is recommended before production implementation.

Q: What is the supply current difference between the MAX475EPD and substitute parts?

A: The MAX475EPD draws 2 mA per channel (8 mA total for four channels). All substitute parts (MCP6294-E/P, TLV2774AIN, TLV2774CN, TLV2774IN) consume 1 mA per channel (4 mA total), representing 50% reduction in supply current. This improvement benefits battery-powered and low-power applications.

Q: Are there any package or pinout differences between the MAX475EPD and substitute parts?

A: No. All parts use the identical 14-DIP (0.300", 7.62mm) through-hole package with compatible pinout. Direct socket substitution is supported without PCB redesign.