TL064IN Equivalent & Substitute Parts

Part Overview

The TL064IN is a J-FET input operational amplifier manufactured by STMicroelectronics, configured as a 4-circuit integrated circuit in a 14-DIP package. This device is classified as obsolete, indicating it is no longer in active production. The TL064IN combines low input bias current (30 pA) with moderate slew rate (3.5 V/µs) and 1 MHz gain bandwidth product, making it suitable for precision signal conditioning and low-noise amplification applications. Due to its obsolete status, equivalent and substitute parts are necessary for design continuity, system maintenance, and new production implementations.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	4	—
Slew Rate	3.5	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	30	pA
Voltage - Input Offset	3	mV
Current - Supply	200	µA (x4 Channels)
Current - Output / Channel	20	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 TL064IN is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input topology (required for low input bias current performance)
Number of Circuits: 4 independent amplifier channels
Package / Case: 14-DIP (0.300", 7.62mm) form factor for mechanical and electrical compatibility
Mounting Type: Through Hole for PCB integration compatibility

Secondary Compatibility Parameters:

Voltage - Supply Span: Minimum 6 V to maximum 36 V operating range
Slew Rate: 3.5 V/µs or higher for signal fidelity
Gain Bandwidth Product: 1 MHz or higher for frequency response
Current - Input Bias: 30 pA or lower for precision applications
Operating Temperature: Overlap with -40°C to 105°C range

Substitute parts are grouped into two categories:

Category 1: Direct J-FET Equivalents — Parts with J-FET input architecture, matching the TL064IN's low input bias current and precision characteristics. These include AD713JNZ, LF347BN/NOPB, LF347N/NOPB, LF444ACN/NOPB, and LF444CN/NOPB.

Category 2: General Purpose Alternatives — Parts with general purpose amplifier topology, offering broader supply voltage ranges and higher output current capability. These include AD704JNZ, LM224KN, LM224N, LM248N, and LM2902N. These are suitable when J-FET input characteristics are not critical to the application.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
TL064IN	STMicroelectronics	J-FET	3.5	1	30	3	200	20	6	36	-40 to 105	Obsolete
AD704JNZ	Analog Devices Inc.	General Purpose	0.1	0.8	100	0.05	1500	15	4	36	0 to 70	Active
AD713JNZ	Analog Devices Inc.	J-FET	20	4	10	0.3	10000	25	9	36	0 to 70	Active
LF347BN/NOPB	Texas Instruments	J-FET	13	4	50	3	7200	—	36	36	0 to 70	Active
LF347N/NOPB	Texas Instruments	J-FET	13	4	50	5	7200	—	36	36	0 to 70	Active
LF444ACN/NOPB	Texas Instruments	J-FET	1	1	10	2	600	14	44	44	0 to 70	Active
LF444CN/NOPB	Texas Instruments	J-FET	1	1	10	3	600	14	36	36	0 to 70	Active
LM224KN	Texas Instruments	General Purpose	0.5	1.2	20000	3	1400	30	3	30	-25 to 85	Active
LM224N	STMicroelectronics	General Purpose	0.4	1.3	20000	2	1500	40	3	30	-40 to 105	Obsolete
LM248N	STMicroelectronics	General Purpose	0.5	1.3	30000	1	2100	25	44	44	-40 to 105	Obsolete
LM2902N	STMicroelectronics	General Purpose	0.4	1	20000	2	1500	40	3	30	-40 to 125	Obsolete

Engineering Selection Recommendations

For Direct Functional Replacement (J-FET Input Required):

The AD713JNZ (Analog Devices Inc.) is the primary active substitute for the TL064IN. Both devices employ J-FET input architecture, delivering superior input bias current performance (AD713JNZ: 10 pA versus TL064IN: 30 pA). The AD713JNZ exceeds the TL064IN in slew rate (20 V/µs versus 3.5 V/µs) and gain bandwidth product (4 MHz versus 1 MHz), providing enhanced dynamic performance. The AD713JNZ is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. Operating temperature range is 0°C to 70°C, which is narrower than the TL064IN's -40°C to 105°C range; this must be verified against application requirements.

The LF444CN/NOPB (Texas Instruments) provides an alternative J-FET substitute with matching 1 MHz gain bandwidth product and 3 mV input offset voltage. This device is RoHS3 compliant and active in production. The LF444CN/NOPB operates at a fixed ±18 V supply (36 V span), which differs from the TL064IN's 6 V to 36 V range. The LF444CN/NOPB is suitable for applications with fixed dual-supply configurations.

For General Purpose Applications (J-FET Input Not Critical):

The LM224N (STMicroelectronics) is an obsolete general purpose substitute with extended operating temperature range (-40°C to 105°C), matching the TL064IN. This device provides higher output current (40 mA versus 20 mA) and operates across 3 V to 30 V supply range. RoHS3 compliance and REACH unaffected status are confirmed.

The LM2902N (STMicroelectronics) is an obsolete general purpose substitute with push-pull output configuration, extended temperature range (-40°C to 125°C), and 3 V to 30 V supply compatibility. Output current capability is 40 mA. RoHS3 compliance is confirmed.

The LM224KN (Texas Instruments) is an active general purpose substitute with 1.2 MHz gain bandwidth product and 30 mA output current. Operating temperature range is -25°C to 85°C, which is narrower than the TL064IN. Supply range is 3 V to 30 V. RoHS3 compliance is confirmed.

Regulatory and Compliance Status:

All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. Active production status is confirmed for AD713JNZ, LF347BN/NOPB, LF347N/NOPB, LF444ACN/NOPB, LF444CN/NOPB, and LM224KN. Obsolete status is noted for LM224N, LM248N, and LM2902N; these are suitable for legacy system maintenance where inventory is available.

Frequently Asked Questions (FAQ)

Q: Can the AD713JNZ directly replace the TL064IN in all applications?

A: The AD713JNZ is functionally compatible as a J-FET input substitute with superior performance characteristics. However, the operating temperature range differs: AD713JNZ operates 0°C to 70°C, while TL064IN operates -40°C to 105°C. Verify application temperature requirements before substitution. Pin configuration and package form factor (14-DIP) are identical.

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

A: J-FET input amplifiers (AD713JNZ, LF347BN/NOPB, LF347N/NOPB, LF444ACN/NOPB, LF444CN/NOPB) deliver extremely low input bias current (10–50 pA), suitable for high-impedance signal sources and precision measurement circuits. General purpose amplifiers (AD704JNZ, LM224KN, LM224N, LM248N, LM2902N) have higher input bias current (20 nA to 100 nA) but offer broader supply voltage ranges and higher output current capability. Select based on application requirements for input impedance and signal conditioning.

Q: Are all substitute parts available in the same 14-DIP package?

A: Yes. All substitute parts listed are packaged in 14-DIP (0.300", 7.62mm) form factor with through-hole mounting. This ensures mechanical and electrical compatibility with existing PCB designs. Supplier device package designations may vary (14-DIP versus 14-PDIP), but physical dimensions and pin assignments are equivalent.

Q: Which substitute offers the best match for extended temperature operation?

A: The LM2902N (STMicroelectronics) provides the widest operating temperature range (-40°C to 125°C), exceeding the TL064IN's -40°C to 105°C range. This device is obsolete but available in inventory. For active production alternatives with extended temperature range, the LM224N (-40°C to 105°C) matches the TL064IN exactly, though it is also obsolete. Active production devices have narrower temperature ranges (0°C to 70°C or -25°C to 85°C).

Q: What supply voltage considerations apply when selecting a substitute?

A: The TL064IN operates across 6 V to 36 V supply span. Substitute selection must account for application supply voltage:

AD713JNZ: 9 V to 36 V (minimum 9 V requirement)
LF347BN/NOPB, LF347N/NOPB, LF444ACN/NOPB, LF444CN/NOPB: Fixed ±18 V (36 V span)
LM224KN, LM224N, LM248N, LM2902N: 3 V to 30 V (lower maximum than TL064IN)
AD704JNZ: 4 V to 36 V

Verify application supply voltage compatibility before substitution.

Q: Is RoHS3 compliance confirmed for all substitutes?

A: Yes. All substitute parts listed carry RoHS3 compliance certification and REACH unaffected status, meeting current environmental regulations for electronic components in regulated markets.

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