MAX4242EUA-T Equivalent & Substitute Parts

Part Overview

The MAX4242EUA-T is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, featuring dual circuits in an 8-uMAX/uSOP surface-mount package. This device operates as a rail-to-rail amplifier with a supply voltage range of 1.8 V to 5.5 V and is designed for low-power applications requiring compact form factors.

The MAX4242EUA-T carries an Obsolete product status. Locating equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements. Active alternatives with compatible electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	90	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	250	µV
Current - Supply (x2 Channels)	14	µA
Current - Output / Channel	2.5	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAX4242EUA-T is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

Dual-circuit configuration (2 circuits required)
Rail-to-rail output capability
8-pin surface-mount package (8-TSSOP or 8-MSOP, 0.118" / 3.00mm width)
Supply voltage range compatibility (minimum 1.8 V, maximum ≥5.5 V)
Operating temperature range coverage (-40°C minimum, 85°C minimum)
RoHS3 compliance and MSL rating ≤2

Secondary Compatibility Parameters:

Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel must be evaluated against application requirements
Amplifier type (general purpose, CMOS, zero-drift, or J-FET) determines performance characteristics and application suitability

Substitute Categories:

Direct Packaging Equivalent (MAX4242EUA+T): Identical electrical specifications; differs only in packaging format (Tape & Reel vs. tube).
CMOS Alternatives (AD8506ARMZ, AD8506ARMZ-R7, AD8506ARMZ-REEL): CMOS amplifiers with enhanced input bias current performance (1 pA vs. 2 nA) and higher output current capability (45 mA vs. 2.5 mA). Supply voltage maximum reduced to 5 V. Operating temperature extended to 125°C.
Zero-Drift Alternatives (ISL28233FUZ, ISL28233FUZ-T7, ISL28233FUZ-T7A): Zero-drift amplifiers with significantly improved input offset voltage (2 µV vs. 250 µV) and higher gain bandwidth product (400 kHz vs. 90 kHz). Supply voltage extended to 6 V. Operating temperature extended to 125°C. MSL rating 2 (1 Year).
J-FET Alternatives (LTC6269HMS8E-10#PBF, LTC6269HMS8E-10#TRPBF, LTC6269IMS8E-10#PBF): J-FET amplifiers with ultra-low input bias current (0.003 pA), extremely high slew rate (1500 V/µs), and 4 GHz gain bandwidth product. Supply voltage range 3.1 V to 5.25 V. Not rail-to-rail output. Operating temperature varies by part number.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA/pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
MAX4242EUA-T	Analog Devices / Maxim	General Purpose	0.04	90	2 nA	250	14	2.5	1.8	5.5	-40 to 85	8-uMAX	Obsolete
MAX4242EUA+T	Analog Devices / Maxim	General Purpose	0.04	90	2 nA	250	14	2.5	1.8	5.5	-40 to 85	8-MSOP	Active
AD8506ARMZ	Analog Devices	CMOS	0.013	95	1 pA	500	15	45	1.8	5.0	-40 to 125	8-MSOP	Active
AD8506ARMZ-R7	Analog Devices	CMOS	0.013	95	1 pA	500	15	45	1.8	5.0	-40 to 125	8-MSOP	Active
AD8506ARMZ-REEL	Analog Devices	CMOS	0.013	95	1 pA	500	15	45	1.8	5.0	-40 to 125	8-MSOP	Active
ISL28233FUZ	Renesas Electronics	Zero-Drift	0.2	400	180 pA	2	18	19	1.8	6.0	-40 to 125	8-MSOP	Active
ISL28233FUZ-T7	Renesas Electronics	Zero-Drift	0.2	400	180 pA	2	18	19	1.8	6.0	-40 to 125	8-MSOP	Active
ISL28233FUZ-T7A	Renesas Electronics	Zero-Drift	0.2	400	180 pA	2	18	19	1.8	6.0	-40 to 125	8-MSOP	Active
LTC6269HMS8E-10#PBF	Analog Devices	J-FET	1500	4000	0.003 pA	200	16.5	90	3.1	5.25	-40 to 125	8-MSOP-EP	Active
LTC6269HMS8E-10#TRPBF	Analog Devices	J-FET	1500	4000	0.003 pA	200	16.5	90	3.1	5.25	-40 to 125	8-MSOP-EP	Active
LTC6269IMS8E-10#PBF	Analog Devices	J-FET	1500	4000	0.003 pA	200	16.5	90	3.1	5.25	-40 to 125	8-MSOP-EP	-40 to 85

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Select MAX4242EUA+T when the application requires exact electrical equivalence to the obsolete MAX4242EUA-T. This part maintains all specified parameters and is currently in Active product status with 42,900 units in stock. The only difference is packaging format (Tape & Reel vs. tube). RoHS3 compliance and MSL 1 rating are maintained.

For CMOS Technology Migration (AD8506 Series):

The AD8506ARMZ, AD8506ARMZ-R7, and AD8506ARMZ-REEL are suitable when applications can tolerate reduced slew rate (0.013 V/µs vs. 0.04 V/µs) in exchange for superior input bias current performance (1 pA vs. 2 nA) and significantly higher output current capability (45 mA vs. 2.5 mA). These parts support extended operating temperature to 125°C. Supply voltage maximum is reduced to 5.0 V; verify compatibility with 5.5 V supply designs. All three variants are Active status with combined inventory exceeding 25,600 units. RoHS3 compliance and MSL 1 rating apply.

For Precision Offset Voltage Applications (ISL28233 Series):

The ISL28233FUZ, ISL28233FUZ-T7, and ISL28233FUZ-T7A are appropriate when applications require input offset voltage of 2 µV (vs. 250 µV in MAX4242EUA-T) and higher gain bandwidth product (400 kHz vs. 90 kHz). These zero-drift amplifiers support extended operating temperature to 125°C and supply voltage to 6.0 V. MSL rating is 2 (1 Year); verify moisture handling requirements. Combined inventory exceeds 11,200 units. RoHS3 compliance applies.

For Ultra-High-Speed Applications (LTC6269 Series):

The LTC6269HMS8E-10#PBF, LTC6269HMS8E-10#TRPBF, and LTC6269IMS8E-10#PBF are applicable only when applications require J-FET input characteristics with ultra-low input bias current (0.003 pA), extremely high slew rate (1500 V/µs), and 4 GHz gain bandwidth product. These parts do not provide rail-to-rail output. Supply voltage range is restricted to 3.1 V to 5.25 V; 5.5 V supply designs require verification. Operating temperature for LTC6269IMS8E-10#PBF is limited to -40°C to 85°C. Combined inventory exceeds 3,300 units. RoHS3 compliance and MSL 1 rating apply.

Frequently Asked Questions (FAQ)

Q1: Can MAX4242EUA+T be used as a direct replacement for MAX4242EUA-T?

A: Yes. MAX4242EUA+T is electrically and functionally identical to MAX4242EUA-T. The only difference is packaging format: MAX4242EUA+T is supplied in Tape & Reel format, while MAX4242EUA-T was supplied in tube packaging. Both maintain identical electrical specifications, RoHS3 compliance, and MSL 1 rating. MAX4242EUA+T is currently in Active product status with substantial inventory availability.

Q2: What are the key differences between the MAX4242EUA-T and AD8506ARMZ?

A: Both are dual-circuit, rail-to-rail amplifiers in 8-MSOP packages with 1.8 V minimum supply voltage. Key differences: AD8506ARMZ uses CMOS technology (vs. general-purpose bipolar in MAX4242EUA-T), resulting in 1 pA input bias current (vs. 2 nA), but reduced slew rate of 0.013 V/µs (vs. 0.04 V/µs). AD8506ARMZ provides 45 mA output current per channel (vs. 2.5 mA) and supports extended temperature to 125°C. Supply voltage maximum is 5.0 V (vs. 5.5 V). AD8506ARMZ is suitable for low-bias-current applications; MAX4242EUA-T is suitable for higher slew rate requirements.

Q3: When should ISL28233FUZ be selected over MAX4242EUA-T?

A: ISL28233FUZ is selected when applications require input offset voltage of 2 µV or lower (MAX4242EUA-T specifies 250 µV). ISL28233FUZ employs zero-drift technology, providing superior DC precision. ISL28233FUZ also offers higher gain bandwidth product (400 kHz vs. 90 kHz) and extended operating temperature to 125°C. Supply voltage extends to 6.0 V. MSL rating is 2 (1 Year); verify moisture sensitivity requirements. ISL28233FUZ is not suitable for applications requiring the lower supply current of MAX4242EUA-T (18 µA vs. 14 µA per dual channels).

Q4: Are LTC6269 parts suitable replacements for MAX4242EUA-T?

A: LTC6269 parts are not direct replacements. While both are dual-circuit amplifiers in 8-MSOP packages, LTC6269 uses J-FET input technology with fundamentally different performance characteristics: ultra-low input bias current (0.003 pA), extremely high slew rate (1500 V/µs), and 4 GHz gain bandwidth product. LTC6269 does not provide rail-to-rail output. Supply voltage range is 3.1 V to 5.25 V (incompatible with 5.5 V supplies). LTC6269 is suitable only for applications requiring J-FET input characteristics and high-speed performance.

Q5: What packaging options are available for MAX4242 equivalents?

A: MAX4242EUA+T is available in Tape & Reel (TR) format. AD8506ARMZ is supplied in Tube; AD8506ARMZ-R7 in Cut Tape (CT) & Digi-Reel; AD8506ARMZ-REEL in Tape & Reel. ISL28233FUZ is supplied in Tube; ISL28233FUZ-T7 in Tape & Reel; ISL28233FUZ-T7A in Cut Tape. LTC6269HMS8E-10#PBF is supplied in Tube; LTC6269HMS8E-10#TRPBF in Tape & Reel; LTC6269IMS8E-10#PBF in Tube. Select packaging format based on assembly process requirements and volume.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MAX4242EUA+T, AD8506 series, ISL28233 series, and LTC6269 series) are RoHS3 compliant. MSL ratings are: MAX4242EUA+T, AD8506 series, and LTC6269 series = MSL 1 (Unlimited); ISL28233 series = MSL 2 (1 Year). Verify moisture handling and storage requirements for MSL 2 parts.

Q7: Can supply voltage be a limiting factor in substitution?

A: Yes. MAX4242EUA-T supports 1.8 V to 5.5 V. AD8506 series maximum is 5.0 V (incompatible with 5.5 V supplies). ISL28233 series supports 1.8 V to 6.0 V (compatible). LTC6269 series supports 3.1 V to 5.25 V (incompatible with 1.8 V minimum or 5.5 V supplies). Verify application supply voltage range before selection.

Q8: What is the impact of operating temperature range differences?

A: MAX4242EUA-T operates -40°C to 85°C. AD8506 series, ISL28233 series, and most LTC6269 variants extend to 125°C. LTC6269IMS8E-10#PBF is limited to -40°C to 85°C. If application requires operation above 85°C, MAX4242EUA-T equivalents must support extended temperature. If application is limited to 85°C maximum, all parts are suitable.

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