TL074IDR Equivalent & Substitute Parts

Part Overview

The TL074IDR is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a 4-circuit device in a 14-SOIC surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. The TL074IDR serves applications requiring low input bias current and stable offset voltage characteristics across industrial temperature ranges. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging preferences, or design flexibility needs.

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 (x4 Channels)	1.4	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	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution of the TL074IDR is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: 4-circuit configuration
Package / Case: 14-SOIC form factor (0.154", 3.90mm width)
Mounting Type: Surface Mount
Slew Rate: 13 V/µs or greater
Gain Bandwidth Product: 3 MHz or greater
Current - Input Bias: 65 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 1.4 mA (x4 Channels) or lower
Voltage - Supply Span: Minimum 10 V, Maximum 30 V or greater
Operating Temperature: -40°C to 85°C or extended range
RoHS3 Compliance: Required
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Consideration:

Product Status: Active preferred; Obsolete acceptable for legacy designs

Substitute parts are grouped into two categories: J-FET amplifiers maintaining identical input stage characteristics, and general-purpose amplifiers offering broader supply voltage ranges with trade-offs in input bias current specifications.

Parameter Comparison

Parameter	TL074IDR	TL074BCD	BA3474FVJ-E2	LF247DT	LF347DT	MC33074DR2G	TL074ACDT
Manufacturer	Texas Instruments	Texas Instruments	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	onsemi	STMicroelectronics
Amplifier Type	J-FET	J-FET	General Purpose	J-FET	J-FET	General Purpose	J-FET
Number of Circuits	4	4	4	4	4	4	4
Slew Rate (V/µs)	13	13	10	16	16	13	13
Gain Bandwidth Product (MHz)	5.25	5.25	4	4	4	4.5	3
Current - Input Bias (pA)	65	65	100 nA	20	20	100 nA	20
Voltage - Input Offset (mV)	3	2	1.5	3	3	1	3
Current - Supply (mA, x4 Channels)	1.4	1.4	8	1.4	1.4	—	1.4
Voltage - Supply Span Min (V)	10	10	3	44	44	3	6
Voltage - Supply Span Max (V)	30	30	36	44	44	44	36
Operating Temperature (°C)	-40 to 85	0 to 70	-40 to 85	-40 to 105	0 to 70	-40 to 105	0 to 70
Package / Case	14-SOIC	14-SOIC	14-TSSOP	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Product Status	Active	Obsolete	Active	Active	Active	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (J-FET Amplifiers, 14-SOIC Package, Active Status):

The TL074ACDT (STMicroelectronics) and LF347DT (STMicroelectronics) are the primary substitutes for the TL074IDR. Both maintain J-FET input architecture, 4-circuit configuration, and 14-SOIC packaging. The TL074ACDT operates within the specified supply voltage range (6 V to 36 V) and temperature range (0°C to 70°C), with identical slew rate and supply current specifications. The LF347DT extends the operating temperature range to -40°C to 105°C and provides superior slew rate performance (16 V/µs), though it requires a fixed 44 V supply span. Both devices carry Active product status and full RoHS3 compliance.

Tier 2 - Functional Substitutes (J-FET Amplifiers, 14-SOIC Package, Extended Temperature):

The LF247DT (STMicroelectronics) provides J-FET input performance with extended operating temperature range (-40°C to 105°C) and higher slew rate (16 V/µs). This device is suitable for applications requiring enhanced thermal performance while maintaining low input bias current (20 pA). The fixed 44 V supply span requirement must be evaluated against circuit design constraints.

Tier 3 - Alternative Substitutes (General Purpose Amplifiers, 14-SOIC Package):

The MC33074DR2G (onsemi) and LM2902EDR2G (onsemi) offer general-purpose amplifier architecture with broader supply voltage compatibility (3 V to 44 V and 3 V to 32 V respectively). These devices sacrifice the ultra-low input bias current characteristic of J-FET designs but provide extended supply voltage flexibility. The MC33074DR2G maintains the 13 V/µs slew rate and operates across -40°C to 85°C. Selection of general-purpose alternatives is appropriate when supply voltage flexibility outweighs input bias current requirements.

Obsolete Status Consideration:

The TL074BCD (Texas Instruments) is classified as Obsolete product status. While electrical parameters align with the TL074IDR, this device should be selected only for legacy design maintenance or when Active alternatives are unavailable.

Packaging Constraint:

The BA3474FVJ-E2 (Rohm Semiconductor) utilizes 14-TSSOP packaging rather than 14-SOIC, requiring PCB layout modification. This device is suitable only when package footprint change is acceptable.

Frequently Asked Questions (FAQ)

Q1: Can the TL074IDR be directly replaced with the TL074ACDT?

A: Yes. The TL074ACDT maintains identical J-FET amplifier architecture, 4-circuit configuration, 14-SOIC package form factor, and equivalent electrical specifications (13 V/µs slew rate, 3 MHz gain bandwidth product, 20 pA input bias current). The operating temperature range differs (0°C to 70°C versus -40°C to 85°C), which must be evaluated against application requirements. Both devices are RoHS3 compliant with unlimited moisture sensitivity rating.

Q2: What is the primary difference between J-FET and general-purpose amplifier substitutes?

A: J-FET amplifiers (TL074ACDT, LF247DT, LF347DT) feature ultra-low input bias current (20-65 pA), making them suitable for high-impedance signal sources and precision measurement applications. General-purpose amplifiers (MC33074DR2G, LM2902EDR2G) accept higher input bias current (90-100 nA) but offer broader supply voltage ranges (3 V to 44 V). Selection depends on whether input impedance or supply voltage flexibility is the design priority.

Q3: Why does the LF347DT require a fixed 44 V supply span?

A: The LF347DT is specified with a fixed 44 V supply span (minimum and maximum both 44 V), indicating this device operates at a single supply voltage level rather than a range. This differs from the TL074IDR, which accepts 10 V to 30 V. Circuit designs must accommodate this fixed voltage requirement or select alternative substitutes with flexible supply ranges.

Q4: Is the BA3474FVJ-E2 a suitable substitute despite different packaging?

A: The BA3474FVJ-E2 utilizes 14-TSSOP packaging (0.173", 4.40mm width) rather than the 14-SOIC package (0.154", 3.90mm width) of the TL074IDR. While electrical performance is compatible, PCB layout and footprint modifications are required. This substitute is appropriate only when design flexibility permits package change. Pin-to-pin compatibility must be verified independently.

Q5: What does "Obsolete" product status mean for the TL074BCD?

A: Obsolete status indicates the TL074BCD is no longer manufactured or supported by Texas Instruments. While electrical specifications align with the TL074IDR, long-term availability cannot be guaranteed. The TL074BCD should be selected only for legacy design maintenance or when Active alternatives (TL074ACDT, LF347DT) are unavailable. New designs should prioritize Active-status devices.

Q6: Can general-purpose amplifiers replace J-FET amplifiers in all applications?

A: No. General-purpose amplifiers accept significantly higher input bias current (90-100 nanoamperes versus 20-65 picoamperes). Applications involving high-impedance signal sources, precision instrumentation, or low-noise requirements may experience performance degradation. General-purpose substitutes are appropriate for applications where input impedance is not a critical constraint and supply voltage flexibility is beneficial.

Q7: How do operating temperature ranges affect substitution decisions?

A: The TL074IDR operates across -40°C to 85°C. Substitutes with narrower ranges (0°C to 70°C) are unsuitable for applications requiring full industrial temperature coverage. The LF247DT and LF347DT extend to -40°C to 105°C, providing enhanced thermal performance for demanding environments. Temperature range selection must align with application deployment conditions.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the TL074IDR environmental and regulatory specifications. This ensures compatibility with modern manufacturing processes and regulatory requirements.

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