MAX4329ESD+ Equivalent & Substitute Parts

Part Overview

The MAX4329ESD+ is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a quad-channel (4 circuit) rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX4329ESD+ operates across a supply voltage range of 2.4V to 6.5V with a slew rate of 2V/µs and gain bandwidth product of 5 MHz, suitable for general-purpose signal conditioning and amplification applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX4329ESD+
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Linear, Amplifiers
Product Status	Obsolete
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	2V/µs
Gain Bandwidth Product	5 MHz
Voltage - Supply Span (Min)	2.4V
Voltage - Supply Span (Max)	6.5V
Operating Temperature	-40°C ~ 85°C
Current - Supply	725µA (x4 Channels)
Current - Output / Channel	50 mA
Current - Input Bias	50 nA
Voltage - Input Offset	1.2 mV
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX4329ESD+ is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Number of Circuits: 4 channels
Output Type: Rail-to-Rail
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Supply Voltage Compatibility: Minimum 2.4V to 6.5V maximum operating range

Performance Parameters for Functional Equivalence:

Slew Rate: 2V/µs (baseline)
Gain Bandwidth Product: 5 MHz (baseline)
Current - Output / Channel: 50 mA (baseline)

The substitute parts listed below maintain the same package footprint and pinout compatibility, ensuring direct replacement capability in existing PCB designs. Substitutes are grouped by amplifier type (General Purpose, CMOS, and Zero-Drift) based on the provided specifications. All substitute parts are compliant with ROHS3 and maintain MSL 1 rating.

Parameter Comparison

Parameter	MAX4329ESD+	MCP6284-E/SL	OPA4317ID	OPA4317IDR	OPA4343UA	TLV2474CDR	TLV2774CD	TS924AIDT
Manufacturer	Analog Devices Inc./Maxim Integrated	Microchip Technology	Texas Instruments	Texas Instruments	Burr Brown	Texas Instruments	Texas Instruments	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Last Time Buy	Active
Amplifier Type	General Purpose	General Purpose	Zero-Drift	Zero-Drift	CMOS	CMOS	CMOS	General Purpose
Number of Circuits	4	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	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate	2V/µs	2.5V/µs	0.15V/µs	0.15V/µs	6V/µs	1.5V/µs	10.5V/µs	1.3V/µs
Gain Bandwidth Product	5 MHz	5 MHz	300 kHz	300 kHz	5.5 MHz	2.8 MHz	5.1 MHz	4 MHz
Current - Input Bias	50 nA	1 pA	155 pA	155 pA	0.2 pA	2.5 pA	2 pA	15 nA
Voltage - Input Offset	1.2 mV	3 mV	20 µV	20 µV	2 mV	250 µV	700 µV	900 µV
Current - Supply	725µA (x4 Channels)	450µA (x4 Channels)	21µA (x4 Channels)	21µA (x4 Channels)	850µA (x4 Channels)	600µA (x4 Channels)	1mA (x4 Channels)	1mA
Current - Output / Channel	50 mA	25 mA	5 mA	5 mA	50 mA	35 mA	50 mA	80 mA
Voltage - Supply Span (Min)	2.4V	2.2V	1.8V	1.8V	2.5V	2.7V	2.5V	2.7V
Voltage - Supply Span (Max)	6.5V	5.5V	5.5V	5.5V	5.5V	6V	5.5V	12V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C (TA)	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 85°C	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute - Active Status: The MCP6284-E/SL (Microchip Technology) is the recommended primary substitute for the obsolete MAX4329ESD+. This device maintains active product status, ensuring long-term availability and manufacturing support. The MCP6284-E/SL provides equivalent electrical performance with a 5 MHz gain bandwidth product and rail-to-rail output configuration. It operates within the supply voltage range of 2.2V to 5.5V, which encompasses the original device's 2.4V to 6.5V range for most applications. The MCP6284-E/SL features superior input bias current (1 pA) and lower supply current (450µA vs. 725µA), offering improved power efficiency. ROHS3 compliance and MSL 1 rating ensure regulatory and manufacturing compatibility.

Secondary Substitutes - Active Status: The OPA4317ID and OPA4317IDR (Texas Instruments) offer zero-drift amplifier technology with exceptional input offset voltage (20 µV) and extended operating temperature range (-40°C to 150°C). These devices are suitable for precision applications requiring minimal offset drift. However, the significantly reduced slew rate (0.15V/µs) and gain bandwidth product (300 kHz) limit their use to low-frequency signal conditioning. Output current capability is reduced to 5 mA per channel.

The OPA4343UA (Burr Brown) provides the highest slew rate (6V/µs) among substitutes, with gain bandwidth product of 5.5 MHz and output current matching the original device (50 mA). This device is suitable for high-speed applications within the -40°C to 85°C temperature range.

The TLV2474CDR (Texas Instruments) operates within a narrower temperature range (0°C to 70°C) and offers reduced output current (35 mA). The TLV2774CD is classified as Last Time Buy, indicating limited future availability.

The TS924AIDT (STMicroelectronics) is an automotive-grade device (AEC-Q100 qualified) with extended supply voltage range (2.7V to 12V) and highest output current capability (80 mA per channel). This device is suitable for automotive and industrial applications requiring extended temperature operation (-40°C to 125°C).

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing processes and environmental regulations. Selection should be based on specific application requirements regarding operating temperature, supply voltage range, output current, and frequency response characteristics.

Frequently Asked Questions (FAQ)

Q1: Can the MCP6284-E/SL directly replace the MAX4329ESD+ without PCB modifications?

A: Yes. The MCP6284-E/SL maintains identical 14-SOIC package dimensions (0.154", 3.90mm width) and pinout configuration, enabling direct PCB replacement without layout changes. Both devices are quad-channel rail-to-rail amplifiers with surface mount configuration.

Q2: What is the primary reason the MAX4329ESD+ requires substitution?

A: The MAX4329ESD+ is classified as obsolete, meaning the manufacturer has discontinued production and support. Substitute parts ensure design continuity and production availability for new builds and field replacements.

Q3: How do the supply voltage ranges differ between the MAX4329ESD+ and substitute parts?

A: The original MAX4329ESD+ operates from 2.4V to 6.5V. Most substitutes operate within narrower ranges: MCP6284-E/SL (2.2V to 5.5V), OPA4317 series (1.8V to 5.5V), OPA4343UA (2.5V to 5.5V), TLV2474CDR (2.7V to 6V), TLV2774CD (2.5V to 5.5V). The TS924AIDT offers the widest range (2.7V to 12V). Applications requiring the full 6.5V maximum should verify substitute compatibility.

Q4: Which substitute offers the best power efficiency?

A: The OPA4317ID and OPA4317IDR consume only 21µA across all four channels, compared to 725µA for the original device. However, these zero-drift devices have significantly reduced bandwidth (300 kHz) and slew rate (0.15V/µs), limiting their use to low-frequency applications.

Q5: Are there temperature range limitations with substitute parts?

A: Yes. The original MAX4329ESD+ operates from -40°C to 85°C. The TLV2474CDR and TLV2774CD are limited to 0°C to 70°C. The OPA4317 series and TS924AIDT extend to 125°C and 150°C respectively, offering wider temperature coverage for industrial and automotive applications.

Q6: What is the difference between OPA4317ID and OPA4317IDR?

A: Both devices are electrically identical zero-drift amplifiers from Texas Instruments. The primary difference is packaging: OPA4317ID is supplied in Tube packaging, while OPA4317IDR is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on procurement and assembly requirements.

Q7: Why does the TS924AIDT have higher output current (80 mA) than the original device (50 mA)?

A: The TS924AIDT is an automotive-grade amplifier designed for demanding industrial and automotive applications. The increased output current capability provides additional design margin for high-load applications while maintaining the same 14-SOIC package footprint.

Q8: Is the OPA4343UA suitable for all applications requiring the MAX4329ESD+?

A: The OPA4343UA is suitable for applications requiring high slew rate (6V/µs) and matching output current (50 mA). However, it operates within the same temperature range as the original device (-40°C to 85°C). Verify supply voltage compatibility (2.5V to 5.5V) for your specific application.

Q9: What does "Last Time Buy" status mean for the TLV2774CD?

A: Last Time Buy indicates that Texas Instruments has announced end-of-life for this product. While currently available, future availability is limited. New designs should consider alternative substitutes with Active status for long-term production support.

Q10: Are all substitute parts ROHS3 compliant?

A: All listed substitutes except OPA4343UA are explicitly ROHS3 compliant. The OPA4343UA compliance status is not specified in the provided data. Verify ROHS3 compliance with the manufacturer if this certification is required for your application.

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