MAX475CSD Equivalent & Substitute Parts

Part Overview

The MAX475CSD is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. This device is classified as obsolete and is no longer in active production. The MAX475CSD operates as a rail-to-rail output amplifier with a supply voltage range of 2.7V to 5.25V and is designed for applications requiring low-power, general-purpose amplification in compact form factors.

Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity, system maintenance, and new production implementations. Substitute parts must maintain compatibility across key electrical parameters including supply voltage range, output type, circuit count, and package configuration.

Key Parameters

Parameter	MAX475CSD	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	Circuits
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.25	V
Slew Rate	17	V/µs
Gain Bandwidth Product	12	MHz
Current - Input Bias	80	nA
Voltage - Input Offset	800	µV
Current - Supply	2	mA (x4 Channels)
Operating Temperature	0 to 70	°C
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX475CSD are selected based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Compatibility Parameters:

Package configuration: 14-SOIC surface-mount package (0.154", 3.90mm width)
Circuit count: Four independent amplifier circuits
Output type: Rail-to-rail output capability
Supply voltage overlap: Minimum 2.7V to maximum 5.25V operating range
Mounting type: Surface mount

Functional Parameters:

Amplifier classification: General-purpose or CMOS amplifier types
Slew rate: Minimum 5V/µs (acceptable for general-purpose applications)
Gain bandwidth product: Minimum 10 MHz
Input bias current: Maximum 1 pA to 80 nA range
Input offset voltage: Maximum 3 mV

All substitute parts listed maintain the 14-SOIC package footprint, four-circuit configuration, and rail-to-rail output specification. Substitute parts are grouped by manufacturer and product status to facilitate selection based on availability and compliance requirements.

Parameter Comparison

Parameter	MAX475CSD	AD8694ARZ	MCP6024T-E/SL	MCP6294-E/SL	MCP6L94T-E/SL	TLV4316IDR	TSV994AIDT
Manufacturer	Analog Devices	Analog Devices	Microchip	Microchip	Microchip	Texas Instruments	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Number of Circuits	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.5 V	2.4 V	2.4 V	1.8 V	2.5 V
Voltage - Supply Span (Max)	5.25 V	6 V	5.5 V	6 V	6 V	5.5 V	5.5 V
Slew Rate	17 V/µs	5 V/µs	7 V/µs	7 V/µs	7 V/µs	6 V/µs	10 V/µs
Gain Bandwidth Product	12 MHz	10 MHz	10 MHz	10 MHz	10 MHz	10 MHz	20 MHz
Current - Input Bias	80 nA	1 pA	1 pA	1 pA	1 pA	10 pA	1 pA
Voltage - Input Offset	800 µV	400 µV	250 µV	3 mV	1 mV	750 µV	100 µV
Current - Supply	2 mA (x4)	950 µA (x4)	1 mA (x4)	1 mA (x4)	850 µA (x4)	400 µA (x4)	820 µA (x4)
Operating Temperature	0 to 70°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount

Engineering Selection Recommendations

Primary Substitute: AD8694ARZ / AD8694ARZ-REEL7

The AD8694ARZ series from Analog Devices represents the most direct functional replacement for the MAX475CSD. Both devices are manufactured by Analog Devices and share identical package specifications (14-SOIC). The AD8694ARZ maintains full compatibility with the MAX475CSD supply voltage range (2.7V to 6V encompasses the original 2.7V to 5.25V specification). This device is in active production status with ROHS3 compliance, addressing the obsolescence and regulatory concerns of the original part. The AD8694ARZ-REEL7 variant offers the same electrical specifications with cut tape and digi-reel packaging options, providing 36,253 units in current inventory.

Secondary Substitute: MCP6L94T-E/SL

The MCP6L94T-E/SL from Microchip Technology provides an alternative with enhanced performance characteristics. This device maintains the 14-SOIC package and four-circuit configuration while offering improved input offset voltage (1 mV versus 800 µV in the original) and reduced supply current (850 µA versus 2 mA). The MCP6L94T-E/SL operates across a supply range of 2.4V to 6V, which fully encompasses the MAX475CSD specification. This part is in active production with ROHS3 compliance and 12,300 units available in inventory.

Tertiary Substitute: TSV994AIDT

The TSV994AIDT from STMicroelectronics offers superior performance metrics including a 20 MHz gain bandwidth product (versus 12 MHz) and 10V/µs slew rate (versus 17V/µs). This device includes automotive-grade qualification (AEC-Q100) and is suitable for applications requiring extended temperature operation (-40°C to 125°C). The TSV994AIDT maintains 14-SOIC package compatibility and four-circuit configuration with 55,300 units in current inventory. ROHS3 compliance is confirmed.

Alternative Substitute: MCP6024T-E/SL

The MCP6024T-E/SL from Microchip Technology provides a cost-optimized alternative with the lowest supply current specification (1 mA across four channels) and improved input offset voltage (250 µV). This device operates across 2.5V to 5.5V supply range and maintains full 14-SOIC package compatibility. The part is in active production with ROHS3 compliance and 14,535 units in inventory.

Low-Voltage Alternative: TLV4316IDR

The TLV4316IDR from Texas Instruments extends the minimum supply voltage specification to 1.8V, enabling operation in ultra-low-power applications. This CMOS amplifier maintains the 14-SOIC package and four-circuit configuration with the lowest supply current (400 µA across four channels). The TLV4316IDR operates across 1.8V to 5.5V and includes ROHS3 compliance with 19,317 units in inventory. Moisture sensitivity level is rated at 2 (1 Year).

Selection Criteria:

For direct replacement with maximum compatibility: Select AD8694ARZ or AD8694ARZ-REEL7
For lowest power consumption: Select TLV4316IDR or MCP6024T-E/SL
For automotive applications: Select TSV994AIDT (AEC-Q100 qualified)
For improved offset voltage performance: Select MCP6024T-E/SL or TSV994AIDT
For extended temperature range: Select any active-status substitute (all support -40°C to 125°C)

All substitute parts are in active production status and ROHS3 compliant, addressing the regulatory and availability limitations of the obsolete MAX475CSD.

Frequently Asked Questions (FAQ)

Q1: Can the AD8694ARZ directly replace the MAX475CSD without PCB modifications?

A: Yes. The AD8694ARZ maintains identical 14-SOIC package dimensions (0.154", 3.90mm width) and pinout compatibility. The supply voltage range of 2.7V to 6V fully encompasses the MAX475CSD specification of 2.7V to 5.25V. No PCB layout changes are required for footprint compatibility. However, verify that your application does not depend on the specific slew rate (17V/µs in MAX475CSD versus 5V/µs in AD8694ARZ) or gain bandwidth product (12 MHz versus 10 MHz).

Q2: What is the key difference between the MCP6L94T-E/SL and MCP6294-E/SL?

A: Both devices are four-circuit rail-to-rail amplifiers in 14-SOIC packages with identical slew rate (7V/µs) and gain bandwidth product (10 MHz). The primary difference is input offset voltage: MCP6L94T-E/SL specifies 1 mV maximum, while MCP6294-E/SL specifies 3 mV maximum. The MCP6L94T-E/SL also offers lower supply current (850 µA versus 1 mA across four channels). Select MCP6L94T-E/SL for precision applications requiring tighter offset voltage control.

Q3: Is the TSV994AIDT suitable for non-automotive applications?

A: Yes. The TSV994AIDT is qualified to AEC-Q100 automotive standards but is not restricted to automotive use. This device is suitable for any application requiring the specified electrical performance. The automotive qualification indicates enhanced reliability testing and extended temperature operation (-40°C to 125°C), which benefits general industrial and commercial applications.

Q4: What is the significance of the AD8694ARZ-REEL7 packaging variant?

A: The AD8694ARZ-REEL7 is identical to the AD8694ARZ in electrical specifications and package configuration. The "-REEL7" designation indicates cut tape and digi-reel packaging format, which is standard for high-volume production environments. The standard AD8694ARZ is supplied in tube packaging. Both variants are functionally equivalent; packaging selection depends on assembly process requirements and inventory management preferences.

Q5: Why does the TLV4316IDR have a lower minimum supply voltage (1.8V) compared to other substitutes?

A: The TLV4316IDR is a CMOS amplifier design, which inherently supports lower supply voltages than bipolar or BiCMOS designs. This characteristic enables operation in battery-powered and ultra-low-power applications. However, verify that your application does not require the specific performance characteristics of the original MAX475CSD, particularly slew rate and gain bandwidth product, which are lower in the TLV4316IDR (6V/µs and 10 MHz respectively).

Q6: Are all substitute parts RoHS compliant?

A: All active-status substitute parts listed (AD8694ARZ, MCP6024T-E/SL, MCP6294-E/SL, MCP6L94T-E/SL, TLV4316IDR, TSV994AIDT, and TSV994AIYDT) are ROHS3 compliant. The original MAX475CSD is RoHS non-compliant. This compliance improvement addresses regulatory requirements for new designs and production environments subject to RoHS directives.

Q7: What is the moisture sensitivity level (MSL) and why does it matter?

A: Moisture sensitivity level indicates the maximum time a component can be stored in ambient conditions (typically 30°C, 85% relative humidity) before requiring baking before reflow soldering. Most substitutes specify MSL 1 (unlimited storage), meaning no time restriction. The TLV4316IDR specifies MSL 2 (1 Year), requiring baking if stored beyond one year in ambient conditions. For standard production environments with proper inventory rotation, MSL 2 presents no practical limitation.

Q8: Can I use the MCP6294-E/SL in place of MCP6L94T-E/SL?

A: Both devices are functionally compatible in 14-SOIC packages with four circuits and rail-to-rail output. However, the MCP6294-E/SL has higher input offset voltage (3 mV maximum versus 1 mV) and higher supply current (1 mA versus 850 µA across four channels). Use MCP6294-E/SL only if your application tolerates the higher offset voltage specification. For precision applications, MCP6L94T-E/SL is the preferred choice.

Q9: What inventory levels should I consider for production planning?

A: Current inventory levels are: AD8694ARZ-REEL7 (36,253 units), TSV994AIDT (55,300 units), MCP6024T-E/SL (14,535 units), MCP6294T-E/SL (12,700 units), MCP6L94T-E/SL (12,300 units), AD8694ARZ (12,900 units), TLV4316IDR (19,317 units), and TSV994AIYDT (3,400 units). For high-volume production, TSV994AIDT and AD8694ARZ-REEL7 offer the highest available inventory. Verify current stock levels with your supplier before finalizing production schedules.

Q10: How do I determine which substitute is best for my specific application?

A: Evaluate your application requirements against these criteria: (1) Supply voltage range required; (2) Slew rate and gain bandwidth product specifications; (3) Input offset voltage tolerance; (4) Supply current budget; (5) Operating temperature range; (6) Packaging and inventory availability; (7) Regulatory compliance requirements (RoHS, REACH, automotive qualification). Cross-reference your requirements against the parameter comparison table to identify compatible substitutes, then select based on performance margin and availability.

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