MAX4123ESA Equivalent & Substitute Parts

Part Overview

The MAX4123ESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and operates across a 2.7V to 6.5V supply voltage range, making it suitable for low-voltage analog signal processing applications.

The MAX4123ESA is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for legacy systems and new designs requiring compatible performance characteristics.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	2	V/µs
Gain Bandwidth Product	5	MHz
Current - Input Bias	50	nA
Voltage - Input Offset	200	µV
Current - Supply	725	µA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6.5	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MAX4123ESA are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Primary Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Voltage - Supply Span (Min): 2.7V minimum
Voltage - Supply Span (Max): 6.0V or higher

Substitution Categories:

Category 1: Direct Packaging Equivalent MAX4123ESA+ is the direct equivalent with identical electrical specifications. The primary difference is packaging format (Tube) and active product status with RoHS3 compliance.

Category 2: Texas Instruments TLV2450 Series TLV2450AIDR, TLV2450CD, and TLV2450ID share the 8-SOIC package and rail-to-rail output architecture. These devices operate within compatible supply voltage ranges (2.7V to 6V) and maintain general-purpose amplifier functionality. Electrical performance differs in slew rate (0.11V/µs vs. 2V/µs) and gain bandwidth product (220 kHz vs. 5 MHz).

Category 3: Texas Instruments TLV2460 Series TLV2460AIDR, TLV2460CD, TLV2460CDR, TLV2460ID, and TLV2460IDR provide enhanced performance with slew rate of 1.6V/µs and gain bandwidth product of 6.4 MHz. Supply voltage range is 2.7V to 6V. These devices are suitable for applications requiring higher speed operation while maintaining 8-SOIC package compatibility.

Category 4: Texas Instruments TLV2770 Series TLV2770AID offers the highest performance with slew rate of 10.5V/µs and gain bandwidth product of 5.1 MHz. Supply voltage range is 2.5V to 5.5V. This device is appropriate for high-speed signal processing applications requiring the same package footprint.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	RoHS Status	Package
MAX4123ESA	Analog Devices	Obsolete	2	5	50	200	725	50	2.7	6.5	-40 to 85	Non-compliant	8-SOIC
MAX4123ESA+	Analog Devices	Active	2	5	50	200	725	—	2.7	6.5	-40 to 85	RoHS3 Compliant	8-SOIC
TLV2450AIDR	Texas Instruments	Active	0.11	0.22	0.5	300	23	10	2.7	6	-40 to 125	RoHS3 Compliant	8-SOIC
TLV2450CD	Texas Instruments	Obsolete	0.11	0.22	0.5	300	23	10	2.7	6	0 to 70	RoHS3 Compliant	8-SOIC
TLV2450ID	Texas Instruments	Active	0.11	0.22	0.5	300	23	10	2.7	6	-40 to 125	RoHS3 Compliant	8-SOIC
TLV2460AIDR	Texas Instruments	Last Time Buy	1.6	6.4	1.3	500	550	80	2.7	6	-40 to 125	RoHS3 Compliant	8-SOIC
TLV2460CD	Texas Instruments	Active	1.6	6.4	1.3	500	550	80	2.7	6	0 to 70	RoHS3 Compliant	8-SOIC
TLV2460CDR	Texas Instruments	Active	1.6	6.4	1.3	500	550	80	2.7	6	0 to 70	RoHS3 Compliant	8-SOIC
TLV2460ID	Texas Instruments	Last Time Buy	1.6	6.4	1.3	500	550	80	2.7	6	-40 to 125	RoHS3 Compliant	8-SOIC
TLV2460IDR	Texas Instruments	Last Time Buy	1.6	6.4	1.3	500	550	80	2.7	6	-40 to 125	RoHS3 Compliant	8-SOIC
TLV2770AID	Texas Instruments	Last Time Buy	10.5	5.1	0.002	500	1000	50	2.5	5.5	-40 to 125	RoHS3 Compliant	8-SOIC

Engineering Selection Recommendations

For Direct Replacement with Identical Specifications: MAX4123ESA+ is the recommended direct substitute. It maintains all electrical characteristics of the original MAX4123ESA while offering active product status and RoHS3 compliance. This option is optimal for designs requiring no performance modification.

For Active Product Status with Extended Temperature Range: TLV2450AIDR and TLV2450ID are active products from Texas Instruments with extended operating temperature range (-40°C to 125°C). These devices are suitable for applications where long-term availability and compliance certifications are critical. Note that slew rate and gain bandwidth product are significantly lower than the MAX4123ESA.

For Enhanced Performance with Active Status: TLV2460CD and TLV2460CDR offer active product status with improved slew rate (1.6V/µs) and higher gain bandwidth product (6.4 MHz) compared to TLV2450 series. TLV2460CDR is packaged in Tape & Reel format. Operating temperature range is 0°C to 70°C.

For Extended Temperature Range with Enhanced Performance: TLV2460AIDR, TLV2460ID, and TLV2460IDR provide -40°C to 125°C operating range with slew rate of 1.6V/µs and gain bandwidth product of 6.4 MHz. TLV2460AIDR and TLV2460IDR are in Last Time Buy status.

For Maximum Performance: TLV2770AID delivers the highest slew rate (10.5V/µs) and lowest input bias current (2 pA). This device is appropriate for high-speed signal processing applications. Supply voltage range is 2.5V to 5.5V. Product status is Last Time Buy.

Compliance Considerations: All Texas Instruments substitutes are RoHS3 compliant. The original MAX4123ESA is RoHS non-compliant. Selection of substitute parts should account for regulatory requirements in target applications and markets.

Frequently Asked Questions (FAQ)

Q: Can MAX4123ESA+ be used as a direct replacement for MAX4123ESA? A: Yes. MAX4123ESA+ is electrically and mechanically identical to MAX4123ESA. The primary differences are packaging format (Tube) and product status (Active with RoHS3 compliance). No circuit modifications are required.

Q: What is the key difference between TLV2450 and TLV2460 series? A: The TLV2460 series offers higher slew rate (1.6V/µs vs. 0.11V/µs) and higher gain bandwidth product (6.4 MHz vs. 220 kHz). Both series maintain 8-SOIC package compatibility and rail-to-rail output. Selection depends on application speed requirements.

Q: Are all substitute parts available in the same 8-SOIC package? A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility with existing PCB layouts.

Q: What is the difference between packaging codes (CD, ID, AIDR, CDR, IDR)? A: Packaging codes indicate different delivery formats: CD = Tube, ID = Tube, AIDR = Tape & Reel, CDR = Tape & Reel, IDR = Tape & Reel. These affect handling and storage but do not change electrical performance.

Q: Which substitute offers the best long-term availability? A: TLV2450AIDR, TLV2450ID, TLV2460CD, and TLV2460CDR are classified as Active products, indicating ongoing manufacturing and support. These are preferred for new designs requiring long-term supply assurance.

Q: Can TLV2770AID be used in applications designed for MAX4123ESA? A: TLV2770AID is mechanically compatible (8-SOIC package) but has different electrical characteristics, particularly higher slew rate (10.5V/µs) and lower input bias current (2 pA). It is suitable only for applications where these enhanced specifications do not cause circuit instability or performance degradation. Supply voltage range is 2.5V to 5.5V, which is narrower than MAX4123ESA (2.7V to 6.5V).

Q: What does "Last Time Buy" product status mean? A: Last Time Buy indicates that the manufacturer has announced end-of-life for the product. Existing inventory may be available, but no new production is planned. These parts should be selected only when active alternatives are unsuitable or when existing stock is sufficient for project requirements.

Q: Are there temperature range limitations I should consider? A: Yes. TLV2450CD and TLV2460CD operate only from 0°C to 70°C, compared to MAX4123ESA's -40°C to 85°C range. For applications requiring full industrial temperature range, select TLV2450AIDR, TLV2450ID, TLV2460AIDR, TLV2460ID, TLV2460IDR, or TLV2770AID.

Q: What is the significance of RoHS compliance for substitute selection? A: RoHS3 compliance is required for products sold in regulated markets. All Texas Instruments substitutes are RoHS3 compliant. The original MAX4123ESA is RoHS non-compliant. For new designs or markets with RoHS requirements, substitute parts must be selected.

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