TL074IN Equivalent & Substitute Parts

Part Overview

The TL074IN is a J-FET input operational amplifier featuring four independent circuits in a 14-DIP package. Manufactured by STMicroelectronics, this device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The TL074IN operates across a wide supply voltage range of 6V to 36V with a slew rate of 13V/µs and gain bandwidth product of 3 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	3	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	3	mV
Current - Supply (x4 Channels)	1.4	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	6	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 105	°C
Package / Case	14-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL074IN is determined by strict alignment of electrical and mechanical parameters within the following categories:

Primary Substitution Criteria:

Amplifier Type (J-FET vs. General Purpose)
Number of Circuits (4 independent circuits required)
Package / Case (14-DIP form factor)
Mounting Type (Through Hole)
Supply Voltage Range compatibility
Slew Rate and Gain Bandwidth Product performance envelope

Direct Equivalent Category: Parts maintaining identical or superior J-FET amplifier architecture with 4 circuits in 14-DIP packaging and compatible supply voltage specifications qualify as direct equivalents. The TL074IN (Texas Instruments variant) represents a direct equivalent with active product status.

Compatible Substitute Category: J-FET amplifiers with 4 circuits in 14-DIP packaging that operate within the specified supply voltage range and maintain comparable slew rate and bandwidth characteristics. Parts such as AD713JNZ, LF347BN/NOPB, LF347N/NOPB, and LF444CN/NOPB fall within this category, though individual parameter variations require circuit-level evaluation.

Limited Compatibility Category: General Purpose amplifiers (AD704JNZ, LM248N, LM348N) with 4 circuits in 14-DIP packaging. These devices differ in amplifier type and exhibit reduced slew rate and input bias current specifications, limiting their application scope to circuits tolerant of these parameter deviations.

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)	Status
TL074IN	STMicroelectronics	J-FET	13	3	20	3	6	36	-40 to 105	Obsolete
TL074IN	Texas Instruments	J-FET	13	5.25	65	3	10	30	-40 to 85	Active
AD704JNZ	Analog Devices Inc.	General Purpose	0.1	0.8	100	0.05	4	36	0 to 70	Active
AD713JNZ	Analog Devices Inc.	J-FET	20	4	10	0.3	9	36	0 to 70	Active
LF347BN/NOPB	Texas Instruments	J-FET	13	4	50	3	36	36	0 to 70	Active
LF347N	STMicroelectronics	J-FET	16	4	20	3	44	44	0 to 70	Obsolete
LF347N/NOPB	Texas Instruments	J-FET	13	4	50	5	36	36	0 to 70	Active
LF444ACN/NOPB	Texas Instruments	J-FET	1	1	10	2	44	44	0 to 70	Active
LF444CN/NOPB	Texas Instruments	J-FET	1	1	10	3	36	36	0 to 70	Active
LM248N	STMicroelectronics	General Purpose	0.5	1.3	30000	1	44	44	-40 to 105	Obsolete
LM348N	STMicroelectronics	General Purpose	0.5	1	30000	1	44	44	0 to 70	Obsolete

Engineering Selection Recommendations

Direct Equivalent Selection: The TL074IN manufactured by Texas Instruments represents the primary direct equivalent, maintaining J-FET amplifier architecture with 4 circuits in 14-DIP packaging and active product status. This variant exhibits superior gain bandwidth product (5.25 MHz vs. 3 MHz) and is ROHS3 compliant with REACH unaffected status, supporting long-term design continuity.

Active J-FET Substitute Selection: For applications requiring J-FET input characteristics with active product availability, AD713JNZ, LF347N/NOPB, and LF347BN/NOPB provide viable alternatives. AD713JNZ offers enhanced slew rate (20V/µs) and lower input bias current (10 pA), suitable for high-speed precision applications. LF347N/NOPB and LF347BN/NOPB maintain 13V/µs slew rate with 4 MHz gain bandwidth product, providing performance alignment with the original specification.

Supply Voltage Constraint Consideration: The original TL074IN operates from 6V minimum supply voltage. Substitute selection must account for supply voltage requirements: AD713JNZ requires minimum 9V, LF347 variants require fixed 36V supply, and LF444 variants require fixed 36V or 44V supply depending on grade. Circuit design must accommodate these constraints.

Temperature Range Consideration: The original TL074IN operates across -40°C to 105°C. Most active substitutes operate within 0°C to 70°C range. Applications requiring extended temperature operation must retain obsolete variants or evaluate alternative architectures.

Compliance Status: All listed parts maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity level is uniformly rated as 1 (Unlimited) across all variants, eliminating moisture handling differentiation in selection criteria.

Frequently Asked Questions (FAQ)

Q: Can the TL074IN be directly replaced with the Texas Instruments TL074IN variant? A: Yes. The Texas Instruments TL074IN is a direct equivalent with identical package, pinout, and J-FET amplifier architecture. It maintains active product status and ROHS3 compliance. The Texas Instruments variant exhibits higher gain bandwidth product (5.25 MHz vs. 3 MHz), which is compatible with applications designed for the original specification.

Q: What is the primary difference between J-FET and General Purpose amplifier substitutes? A: J-FET amplifiers feature extremely low input bias current (10-65 pA range) and are suitable for high-impedance signal sources and precision measurement circuits. General Purpose amplifiers (AD704JNZ, LM248N, LM348N) exhibit significantly higher input bias current (30 nA to 100 pA range) and reduced slew rate, limiting their application to circuits tolerant of these parameter deviations. Direct substitution of General Purpose devices into J-FET designs is not recommended without circuit-level analysis.

Q: Are the LF347 variants suitable substitutes for the TL074IN? A: LF347 variants (LF347N/NOPB, LF347BN/NOPB) are compatible J-FET substitutes with 4 circuits in 14-DIP packaging and active product status. However, they require fixed 36V supply voltage, whereas the original TL074IN operates from 6V to 36V. Circuit design must accommodate this supply voltage constraint. Slew rate and gain bandwidth product are comparable (13V/µs and 4 MHz respectively).

Q: What is the significance of the LF444 series in this substitution list? A: LF444CN/NOPB and LF444ACN/NOPB are J-FET amplifiers with 4 circuits in 14-DIP packaging and active product status. They feature significantly reduced slew rate (1V/µs vs. 13V/µs) and gain bandwidth product (1 MHz vs. 3 MHz), making them suitable only for low-frequency applications. These devices are not recommended for applications requiring the original TL074IN's dynamic performance characteristics.

Q: Can obsolete parts be used as substitutes? A: Obsolete parts (STMicroelectronics LF347N, LM248N, LM348N) are available in inventory but lack active manufacturer support and long-term availability guarantees. Active product variants are preferred for new designs and production continuity. Obsolete parts may be retained for legacy system maintenance where active equivalents are incompatible with existing designs.

Q: What supply voltage constraints apply to substitute selection? A: The original TL074IN operates from 6V to 36V. Substitute parts exhibit varying supply voltage requirements: Texas Instruments TL074IN requires 10V to 30V, AD713JNZ requires 9V to 36V, LF347 variants require fixed 36V, and LF444 variants require fixed 36V or 44V. Circuit design must verify supply voltage compatibility before substitution.

Q: Are all listed parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements equivalent to the original TL074IN specification.

Q: What package considerations apply to these substitutes? A: All listed parts utilize 14-DIP (0.300", 7.62mm) through-hole packaging with identical pinout compatibility. Mechanical mounting and PCB layout considerations are equivalent across all variants, eliminating package-related substitution constraints.

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