MAX419CSD Equivalent & Substitute Parts

Part Overview

The MAX419CSD is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package, manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as obsolete, with 2,392 units currently in stock. The MAX419CSD operates as a rail-to-rail output amplifier suitable for low-power analog signal processing applications across industrial and consumer electronics.

Due to its obsolete product status, identifying functionally equivalent substitute parts is essential for design continuity, long-term supply chain reliability, and new product development. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and pin configuration while meeting modern RoHS compliance requirements.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	MAX419CSD	—
Manufacturer	Analog Devices Inc./Maxim Integrated	—
Number of Circuits	4	—
Amplifier Type	General Purpose	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	10	V
Operating Temperature	0 to 70	°C
Slew Rate	0.08	V/µs
Gain Bandwidth Product	150	kHz
Current - Input Bias	0.1	pA
Voltage - Input Offset	1	mV
Current - Supply (x4 Channels)	1	µA
Current - Output / Channel	600	µA
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX419CSD are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Number of circuits: 4 independent amplifier channels
Package form factor: 14-SOIC surface-mount configuration
Output type: Rail-to-rail capability
Supply voltage range: Minimum 2.5 V, maximum 10 V (or higher)
Pin-compatible 14-SOIC footprint

Secondary Compatibility Factors:

Amplifier type classification (general-purpose or CMOS)
Operating temperature range (minimum -40°C or 0°C; maximum 70°C or higher)
Input bias current and offset voltage characteristics
Slew rate and gain-bandwidth product performance

Substitute parts are grouped into two categories:

Category 1: Direct General-Purpose Replacements (Active Status) Parts OP462GSZ, OP462GSZ-REEL, and OP462GSZ-REEL7 maintain the general-purpose amplifier classification with superior performance metrics (13 V/µs slew rate, 15 MHz gain-bandwidth product) and active product status with RoHS3 compliance.

Category 2: CMOS Amplifier Alternatives (Active Status) Parts LMC6494AEMX/NOPB and LMC6494BEMX/NOPB provide CMOS-based four-circuit amplifiers with enhanced performance (1.3 V/µs slew rate, 1.5 MHz gain-bandwidth product) and active product status. Part LMC6044AIM represents an obsolete CMOS alternative with lower performance specifications.

Category 3: STMicroelectronics General-Purpose Options (Active Status) Parts TS464CDT and TS974IDT offer general-purpose four-circuit amplifiers with moderate performance (4 V/µs slew rate, 12 MHz gain-bandwidth product) and active product status. TS974IDT includes automotive-grade qualification (AEC-Q100).

All substitute parts maintain the 14-SOIC package footprint and four-circuit configuration required for direct PCB compatibility.

Parameter Comparison

Parameter	MAX419CSD	OP462GSZ	LMC6494BEMX/NOPB	LMC6044AIM	TS974IDT
Manufacturer	Analog Devices/Maxim	Analog Devices	Texas Instruments	Texas Instruments	STMicroelectronics
Number of Circuits	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	General Purpose
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Push-Pull, Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Voltage - Supply Span (Min)	2.5 V	2.7 V	2.5 V	4.5 V	2.7 V
Voltage - Supply Span (Max)	10 V	12 V	15.5 V	15.5 V	10 V
Operating Temperature (Min)	0°C	-40°C	-40°C	-40°C	-40°C
Operating Temperature (Max)	70°C	125°C	125°C	85°C	125°C
Slew Rate	0.08 V/µs	13 V/µs	1.3 V/µs	0.02 V/µs	4 V/µs
Gain Bandwidth Product	150 kHz	15 MHz	1.5 MHz	100 kHz	12 MHz
Current - Input Bias	0.1 pA	260 nA	0.15 pA	0.002 pA	200 nA
Voltage - Input Offset	1 mV	25 µV	110 µV	1 mV	1 mV
Current - Supply (x4 Channels)	1 µA	550 µA	2.6 mA	52 µA	2 mA
Current - Output / Channel	600 µA	30 mA	30 mA	40 mA	100 mA
Product Status	Obsolete	Active	Active	Obsolete	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount

Engineering Selection Recommendations

For Direct Performance Replacement with Active Product Status:

The OP462GSZ, OP462GSZ-REEL, and OP462GSZ-REEL7 (Analog Devices) are the primary recommended substitutes. These parts maintain general-purpose amplifier classification, 14-SOIC package compatibility, and rail-to-rail output configuration. All three variants are in active product status with RoHS3 compliance. The OP462 series delivers significantly enhanced performance (13 V/µs slew rate, 15 MHz gain-bandwidth product) compared to the MAX419CSD, supporting higher-frequency signal processing applications. Supply voltage range extends to 12 V maximum, accommodating the MAX419CSD's 10 V maximum requirement. Operating temperature range extends to -40°C to 125°C, exceeding the MAX419CSD's 0°C to 70°C specification. Current output per channel increases to 30 mA, providing greater drive capability.

For CMOS-Based Four-Circuit Amplifier Applications:

The LMC6494BEMX/NOPB (Texas Instruments) and LMC6494AEMX/NOPB (National Semiconductor) provide CMOS amplifier alternatives with active product status and RoHS3 compliance. Both parts deliver 1.3 V/µs slew rate and 1.5 MHz gain-bandwidth product, supporting moderate-frequency applications. Supply voltage range extends to 15.5 V maximum. Operating temperature range reaches -40°C to 125°C. Input offset voltage is 110 µV, and current output per channel is 30 mA. These parts are suitable for applications requiring lower input bias current (0.15 pA) and extended temperature operation.

For Automotive-Grade Applications:

The TS974IDT (STMicroelectronics) is qualified to AEC-Q100 automotive standards with active product status and RoHS3 compliance. This part provides 4 V/µs slew rate, 12 MHz gain-bandwidth product, and 100 mA current output per channel. Operating temperature range is -40°C to 125°C. Supply voltage range is 2.7 V to 10 V, matching the MAX419CSD's maximum specification. This part is appropriate for automotive and industrial applications requiring automotive-grade qualification.

For Cost-Optimized Legacy Designs:

The TS464CDT (STMicroelectronics) offers general-purpose four-circuit amplification with active product status and RoHS3 compliance. This part provides 4 V/µs slew rate and 12 MHz gain-bandwidth product. Operating temperature range is -20°C to 70°C, closely matching the MAX419CSD's 0°C to 70°C specification. Supply voltage range is 2.7 V to 10 V. This part is suitable for cost-sensitive applications with moderate performance requirements.

Compliance Consideration:

All recommended active-status substitutes are RoHS3 compliant, addressing the MAX419CSD's RoHS non-compliance status. This compliance upgrade is essential for new product designs and long-term supply chain sustainability.

Frequently Asked Questions (FAQ)

Q1: Can the OP462GSZ directly replace the MAX419CSD on existing PCBs?

A: Yes. The OP462GSZ maintains identical 14-SOIC package footprint, pin configuration, and four-circuit rail-to-rail output topology. No PCB layout modifications are required. However, the OP462GSZ delivers significantly higher performance (13 V/µs slew rate versus 0.08 V/µs), which may require circuit design verification to ensure stability and noise performance remain within specification.

Q2: What is the key difference between the OP462GSZ variants (standard, -REEL, -REEL7)?

A: The three OP462GSZ variants are electrically identical. The differences are packaging and delivery format: OP462GSZ is supplied in tube packaging, OP462GSZ-REEL is supplied on tape and reel (standard 7-inch reel), and OP462GSZ-REEL7 is supplied on tape and reel (7-inch reel). Selection depends on manufacturing process requirements and inventory management preferences.

Q3: Why do substitute parts show higher supply current than the MAX419CSD?

A: The MAX419CSD operates at extremely low supply current (1 µA total for four channels), which limits performance to 0.08 V/µs slew rate and 150 kHz gain-bandwidth product. Substitute parts with higher supply current (550 µA to 2.6 mA) deliver proportionally higher performance metrics. This trade-off between power consumption and performance is inherent to analog amplifier design. Applications requiring ultra-low power operation should retain the MAX419CSD or evaluate the LMC6044AIM (52 µA total supply current).

Q4: Is the LMC6044AIM a suitable substitute despite obsolete product status?

A: The LMC6044AIM is not recommended as a primary substitute because it shares obsolete product status with the MAX419CSD. While it provides CMOS amplifier functionality in 14-SOIC package with four circuits, its obsolescence creates the same long-term supply chain risk as the original part. The LMC6044AIM is appropriate only for legacy design maintenance where existing inventory is available.

Q5: What are the supply voltage compatibility considerations?

A: The MAX419CSD operates from 2.5 V to 10 V. All recommended substitutes (OP462GSZ, LMC6494BEMX/NOPB, TS974IDT, TS464CDT) support this voltage range. The LMC6044AIM requires minimum 4.5 V supply, which exceeds the MAX419CSD's 2.5 V minimum and may not be compatible with low-voltage applications. Verify supply voltage requirements before part selection.

Q6: Which substitute is best for temperature-extended applications?

A: The OP462GSZ, LMC6494BEMX/NOPB, and TS974IDT all support -40°C to 125°C operating temperature range, compared to the MAX419CSD's 0°C to 70°C. The TS464CDT supports -20°C to 70°C, which is narrower than the MAX419CSD. For applications requiring extended low-temperature operation below 0°C, select OP462GSZ, LMC6494BEMX/NOPB, or TS974IDT.

Q7: Are there pin-compatibility concerns when substituting these parts?

A: All substitute parts maintain identical 14-SOIC pin configuration and pinout. No pin remapping or circuit board modifications are required. However, verify that the specific variant (tube, reel, or reel7 packaging) does not introduce handling or assembly process changes.

Q8: What is the significance of RoHS3 compliance for substitute selection?

A: The MAX419CSD is RoHS non-compliant, which restricts its use in new product designs subject to RoHS regulations (primarily European Union and similar jurisdictions). All recommended active-status substitutes are RoHS3 compliant, enabling compliance with environmental and regulatory requirements. This is a critical consideration for new product development and long-term market access.

Q9: Which substitute offers the highest output current capability?

A: The TS974IDT provides 100 mA output current per channel, compared to 600 µA for the MAX419CSD and 30 mA for OP462GSZ and LMC6494BEMX/NOPB. The TS974IDT is appropriate for applications requiring higher output drive capability or direct load driving without additional buffer stages.

Q10: Can the LMC6494BEMX/NOPB and LMC6494AEMX/NOPB be used interchangeably?

A: Yes. The LMC6494BEMX/NOPB (Texas Instruments) and LMC6494AEMX/NOPB (National Semiconductor) are electrically and functionally identical. Both are CMOS four-circuit amplifiers with 1.3 V/µs slew rate, 1.5 MHz gain-bandwidth product, and 14-SOIC package. The difference is manufacturer and packaging format (Tape & Reel versus Bulk). Selection depends on supplier availability and manufacturing process requirements.

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