TL074IDRE4 Equivalent & Substitute Parts

Part Overview

The TL074IDRE4 is a J-FET input operational amplifier with four independent circuits in a 14-SOIC surface mount package, manufactured by Texas Instruments. This device is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. The part operates across a supply voltage range of 10V to 30V with a slew rate of 13V/µs and gain bandwidth product of 5.25 MHz, making it suitable for precision analog signal processing applications requiring low input bias current and low input offset voltage.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	4	—
Slew Rate	13	V/µs
Gain Bandwidth Product	5.25	MHz
Current - Input Bias	65	pA
Voltage - Input Offset	3	mV
Current - Supply	1.4 (x4 Channels)	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-40 to 85	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TL074IDRE4 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input architecture
Number of Circuits: Four independent operational amplifiers
Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 10V, Maximum 30V (or compatible range)
Operating Temperature: -40°C to 85°C or extended range
RoHS3 Compliance and MSL rating

Secondary Compatibility Parameters:

Slew Rate: 13V/µs or greater
Gain Bandwidth Product: 5.25 MHz or greater
Current - Input Bias: 65 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 1.4 mA per channel or lower

Substitute parts are grouped into two categories: Direct J-FET Substitutes (identical amplifier type) and Functional Alternatives (general-purpose amplifiers with compatible electrical performance in 14-SOIC packaging).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
TL074IDRE4	Texas Instruments	J-FET	13	5.25	65	3	10	30	-40 to 85	Discontinued
TL074IDR	Texas Instruments	J-FET	13	5.25	65	3	10	30	-40 to 85	Active
TL074BCD	Texas Instruments	J-FET	13	5.25	65	2	10	30	0 to 70	Obsolete
ADTL084ARZ-REEL7	Analog Devices Inc.	J-FET	20	5	2	1.5	8	36	-40 to 125	Active
LF247DT	STMicroelectronics	J-FET	16	4	20	3	44	44	-40 to 105	Active
LF347D	STMicroelectronics	J-FET	16	3	20	3	44	44	0 to 70	Active
LF347DT	STMicroelectronics	J-FET	16	4	20	3	44	44	0 to 70	Active
TL074ACDT	STMicroelectronics	J-FET	13	3	20	3	6	36	0 to 70	Active
MC33074DR2G	onsemi	General Purpose	13	4.5	100	1	3	44	-40 to 85	Active
AS324AMTR-G1	Diodes Incorporated	General Purpose	—	—	20000	2	3	36	-40 to 85	Active
SC2902DG	onsemi	General Purpose	—	—	90	2	3	32	-40 to 105	Active

Engineering Selection Recommendations

Tier 1 - Direct Electrical and Mechanical Equivalents:

The TL074IDR (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the TL074IDRE4 across all critical parameters: J-FET amplifier type, four circuits, 13V/µs slew rate, 5.25 MHz gain bandwidth product, 65 pA input bias current, and 3 mV input offset voltage. The supply voltage range (10V to 30V) and operating temperature range (-40°C to 85°C) are identical. The part is currently Active in product status with 25,400 units in stock, ensuring availability. RoHS3 compliance and MSL 1 rating match the original specification. Packaging is available in Cut Tape and Digi-Reel formats.

Tier 2 - J-FET Substitutes with Enhanced Performance:

The ADTL084ARZ-REEL7 (Analog Devices Inc.) provides superior electrical performance while maintaining J-FET input architecture. This part offers improved slew rate (20V/µs versus 13V/µs), significantly lower input bias current (2 pA versus 65 pA), and lower input offset voltage (1.5 mV versus 3 mV). The supply voltage range is expanded (8V to 36V), and operating temperature extends to 125°C. The part is Active with 44,200 units in stock. This substitute is suitable for applications requiring enhanced precision and wider operating conditions.

Tier 3 - J-FET Substitutes with Operational Constraints:

The TL074ACDT (STMicroelectronics) maintains J-FET architecture and identical slew rate (13V/µs) but operates within a narrower temperature range (0°C to 70°C). The gain bandwidth product is reduced to 3 MHz. Supply voltage range is 6V to 36V. This part is Active with 21,197 units in stock and is suitable for applications not requiring the full -40°C to 85°C temperature range.

The LF247DT and LF347DT (STMicroelectronics) are J-FET amplifiers with improved slew rate (16V/µs) and lower input bias current (20 pA). However, these parts specify a fixed supply voltage of 44V, which does not accommodate the original 10V to 30V range. These substitutes are suitable only for applications with 44V supply availability.

Tier 4 - General-Purpose Functional Alternatives:

The MC33074DR2G (onsemi) is a general-purpose amplifier with identical slew rate (13V/µs) and compatible gain bandwidth product (4.5 MHz). While not J-FET input, it provides lower input offset voltage (1 mV) and operates across 3V to 44V supply range with -40°C to 85°C temperature range. This part is Active with 37,700 units in stock and is suitable for applications where J-FET input characteristics are not critical.

The SC2902DG (onsemi) and AS324AMTR-G1 (Diodes Incorporated) are general-purpose alternatives with extended supply voltage ranges (3V to 32V and 3V to 36V respectively) but do not provide J-FET input characteristics or specified slew rate performance. These are suitable only for non-critical applications.

Compliance and Regulatory Considerations:

All recommended substitutes maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements. REACH status is unaffected across all alternatives.

Frequently Asked Questions (FAQ)

Q1: Can TL074IDR be used as a direct replacement for TL074IDRE4?

A: Yes. The TL074IDR is electrically and mechanically identical to the TL074IDRE4. Both are J-FET input operational amplifiers with four circuits in 14-SOIC packaging, identical slew rate (13V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), input offset voltage (3 mV), and supply voltage range (10V to 30V). The primary difference is product status: TL074IDRE4 is discontinued while TL074IDR is currently Active. Packaging formats differ (TL074IDR available in Cut Tape and Digi-Reel), but the electrical performance is equivalent.

Q2: What is the difference between J-FET and general-purpose amplifiers in the substitute list?

A: J-FET input amplifiers (TL074IDR, ADTL084ARZ-REEL7, LF247DT, LF347DT, TL074ACDT) feature extremely low input bias current (2 to 65 pA) and are suitable for high-impedance signal sources and precision measurement applications. General-purpose amplifiers (MC33074DR2G, AS324AMTR-G1, SC2902DG) have higher input bias current (20 nA to 100 nA) but offer lower supply voltage minimums (3V) and wider supply ranges. Selection depends on application requirements for input impedance and signal source characteristics.

Q3: Why do LF247DT and LF347DT specify 44V supply voltage instead of a range?

A: The LF247DT and LF347DT datasheets specify a fixed supply voltage of 44V, indicating these parts are designed for symmetric dual-supply operation (±22V). This differs from the TL074IDRE4, which operates across a 10V to 30V range suitable for single or dual-supply configurations. These substitutes are not compatible with the original 10V to 30V specification and should be used only in applications with 44V supply availability.

Q4: Is the ADTL084ARZ-REEL7 a suitable substitute if my application requires the lowest possible input bias current?

A: Yes. The ADTL084ARZ-REEL7 provides the lowest input bias current (2 pA) among all listed substitutes, compared to 65 pA for the TL074IDRE4. This part also offers lower input offset voltage (1.5 mV versus 3 mV) and higher slew rate (20V/µs versus 13V/µs). The supply voltage range is expanded (8V to 36V), and operating temperature extends to 125°C. This substitute is suitable for precision applications requiring ultra-low input bias current and offset voltage.

Q5: Can I use MC33074DR2G if my circuit does not require J-FET input characteristics?

A: Yes, if your application does not depend on the extremely low input bias current of J-FET amplifiers. The MC33074DR2G is a general-purpose amplifier with identical slew rate (13V/µs) to the TL074IDRE4 and compatible gain bandwidth product (4.5 MHz). It operates across 3V to 44V supply range and -40°C to 85°C temperature range. However, input bias current is 100 nA, approximately 1,500 times higher than the original part. This substitute is suitable only for applications where input impedance is not a critical design parameter.

Q6: What packaging formats are available for the recommended substitutes?

A: The TL074IDR is available in Cut Tape (CT) and Digi-Reel formats. The ADTL084ARZ-REEL7 is available in Cut Tape and Digi-Reel. The TL074ACDT is available in Cut Tape and Digi-Reel. The LF247DT is available in Tape & Reel (TR). The LF347D is available in Tube. The LF347DT is available in Cut Tape and Digi-Reel. The MC33074DR2G is available in Cut Tape and Digi-Reel. The AS324AMTR-G1 is available in Tape & Reel. The SC2902DG packaging format is not specified. All parts maintain the 14-SOIC (0.154", 3.90mm width) surface mount package form factor.

Q7: Are there temperature range limitations I should consider when selecting a substitute?

A: Yes. The TL074IDRE4 operates from -40°C to 85°C. The TL074IDR maintains this range. The ADTL084ARZ-REEL7 extends to 125°C, suitable for high-temperature applications. The TL074BCD, LF347D, and LF347DT operate only from 0°C to 70°C, which does not cover the full original range. The MC33074DR2G and AS324AMTR-G1 maintain -40°C to 85°C. The SC2902DG extends to 105°C. Select substitutes based on your application's minimum and maximum operating temperature requirements.

Q8: What is the significance of RoHS3 compliance and MSL 1 rating?

A: RoHS3 compliance indicates the part contains no restricted hazardous substances (lead, cadmium, mercury, etc.) and meets environmental regulations for electronic components. MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control, meaning the part does not require special desiccant packaging or storage conditions. All recommended substitutes maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing processes and storage requirements.

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