TL064ID Equivalent & Substitute Parts

Part Overview

The TL064ID is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in 14-SOIC surface mount packaging. This device is classified as Last Time Buy, indicating discontinued production status. The TL064ID operates across a supply voltage range of 10V to 30V with an input bias current of 30 pA and slew rate of 3.5V/µs, making it suitable for precision analog signal processing applications requiring low input bias current characteristics.

Due to Last Time Buy status, equivalent substitute parts are necessary for ongoing design support and production continuity. Substitute selection must maintain functional compatibility based on amplifier type, circuit count, packaging format, and critical electrical parameters.

Key Parameters

Parameter	TL064ID 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 (x4 Channels)	200	µA
Current - Output / Channel	20	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

Substitute parts for the TL064ID are grouped based on strict adherence to the following substitution criteria:

Primary Substitution Criteria (Mandatory Match):

Number of Circuits: 4
Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Secondary Substitution Criteria (Functional Compatibility):

Amplifier Type: J-FET (preferred for direct substitution) or General Purpose (acceptable with parameter verification)
Operating Temperature Range: Must encompass or exceed -40°C to 85°C
Voltage - Supply Span: Must support minimum 10V to maximum 30V operation
Current - Input Bias: Lower values acceptable; higher values require application verification
Slew Rate: 3.5V/µs or higher acceptable
Gain Bandwidth Product: 1 MHz or higher acceptable

Tertiary Substitution Criteria (Packaging & Compliance):

Moisture Sensitivity Level: 1 or 3 acceptable
REACH Status: REACH Unaffected required
ECCN: EAR99 required

Substitutes are divided into two categories: Direct J-FET Substitutes (TL064IDR, LF247DT, LF347D, LF347DT) and General Purpose Alternatives (AS324MTR-E1, LM124DT, LM224DR2G, LM224DT, LM248DT, LM2902EDR2G). General Purpose alternatives provide broader supply voltage ranges and lower input bias currents but differ in amplifier topology.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
TL064ID	Texas Instruments	J-FET	3.5	1	30	10	30	-40 to 85	Last Time Buy
TL064IDR	Texas Instruments	J-FET	3.5	1	30	10	30	-40 to 85	Active
LF247DT	STMicroelectronics	J-FET	16	4	20	44	44	-40 to 105	Active
LF347D	STMicroelectronics	J-FET	16	3	20	44	44	0 to 70	Active
LF347DT	STMicroelectronics	J-FET	16	4	20	44	44	0 to 70	Active
AS324MTR-E1	Diodes Incorporated	General Purpose	—	—	20000	3	36	-40 to 85	Active
LM124DT	STMicroelectronics	General Purpose	0.4	1.3	20000	3	30	-55 to 125	Active
LM224DR2G	onsemi	General Purpose	—	1	90000	3	32	-25 to 85	Active
LM224DT	STMicroelectronics	General Purpose	0.4	1.3	20000	3	30	-40 to 105	Active
LM248DT	STMicroelectronics	General Purpose	0.5	1.3	30000	44	44	-40 to 105	Active
LM2902EDR2G	onsemi	General Purpose	—	—	90000	3	32	-40 to 105	Active

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Identical Electrical Performance):

TL064IDR is the primary recommended substitute. Manufactured by Texas Instruments, it maintains identical electrical specifications to the TL064ID across all critical parameters: J-FET amplifier type, 3.5V/µs slew rate, 1 MHz gain bandwidth product, 30 pA input bias current, and 10V to 30V supply range. Product status is Active with higher inventory availability (35,100 units). Packaging differs only in format (Cut Tape & Digi-Reel® versus Tube), with no functional impact. RoHS3 compliance and MSL 1 rating are maintained.

Tier 2 - J-FET Substitutes (Enhanced Performance):

LF247DT, LF347D, and LF347DT are J-FET amplifiers manufactured by STMicroelectronics. These devices provide superior slew rate (16V/µs) and higher gain bandwidth product (3-4 MHz) compared to TL064ID. Input bias current is reduced to 20 pA. Critical limitation: supply voltage span is fixed at 44V, which does not accommodate the TL064ID's 10V minimum requirement. These substitutes are suitable only for applications operating at ±22V or higher symmetric supplies. Operating temperature range extends to 105°C (LF247DT) or 70°C (LF347D/LF347DT). Product status is Active.

Tier 3 - General Purpose Substitutes (Functional Compatibility with Trade-offs):

AS324MTR-E1, LM124DT, LM224DR2G, LM224DT, LM248DT, and LM2902EDR2G are general purpose operational amplifiers. These devices provide broader supply voltage ranges (3V to 30-36V) and extended operating temperature ranges. Input bias current is significantly higher (20-90 nanoamperes versus 30 picoamperes), which may impact precision analog applications requiring ultra-low input bias characteristics. Slew rates are lower (0.4-0.5V/µs) except where unspecified. These substitutes are suitable for applications where J-FET input characteristics are not critical. All devices maintain RoHS3 compliance and 14-SOIC packaging. Product status is Active with high inventory availability.

Compliance & Certification Basis:

All recommended substitutes maintain ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification, ensuring regulatory equivalence. Moisture Sensitivity Level 1 (unlimited) is maintained across all Tier 1 and Tier 2 substitutes, with MSL 3 acceptable for Tier 3 alternatives in non-critical moisture environments.

Frequently Asked Questions (FAQ)

Q1: Can TL064IDR be used as a direct replacement for TL064ID without circuit modification?

A: Yes. TL064IDR is electrically and functionally identical to TL064ID. All electrical parameters, supply voltage range, operating temperature range, and package dimensions are equivalent. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube), which does not affect circuit performance. No design changes are required.

Q2: Why do LF247DT and LF347DT show a 44V supply span instead of a range?

A: The 44V specification indicates a symmetric dual supply configuration (±22V). These devices are optimized for symmetric supply operation and do not support the asymmetric 10V to 30V range of the TL064ID. Applications requiring single-supply or asymmetric supply operation must use Tier 1 or Tier 3 substitutes.

Q3: What is the significance of input bias current differences between J-FET and General Purpose substitutes?

A: J-FET input amplifiers (TL064ID, TL064IDR, LF247DT, LF347D, LF347DT) exhibit input bias currents in the picoampere range (20-30 pA), suitable for high-impedance signal sources and precision instrumentation. General Purpose substitutes exhibit input bias currents in the nanoampere range (20-90 nA), approximately 1000 times higher. For applications with source impedances exceeding 1 megohm, J-FET substitutes are required to minimize input offset voltage drift. For lower impedance applications, General Purpose substitutes are acceptable.

Q4: Can AS324MTR-E1 replace TL064ID in a precision audio preamplifier circuit?

A: AS324MTR-E1 is functionally compatible from a packaging and circuit count perspective but exhibits significantly higher input bias current (20 nanoamperes versus 30 picoamperes). For audio preamplifier applications with high-impedance input networks, this difference may introduce measurable input offset voltage drift with temperature. Tier 1 (TL064IDR) or Tier 2 (LF347DT) substitutes are preferred for precision audio applications.

Q5: What is the impact of slew rate differences on circuit performance?

A: TL064ID has a slew rate of 3.5V/µs. LF247DT and LF347DT provide 16V/µs, enabling faster signal transitions and reduced distortion in high-frequency applications. General Purpose substitutes provide 0.4-0.5V/µs, limiting maximum undistorted output frequency. For audio and precision analog applications below 100 kHz, slew rate differences are negligible. For high-frequency signal processing above 500 kHz, Tier 2 substitutes provide superior performance.

Q6: Are all substitute parts available in the same 14-SOIC package?

A: Yes. All recommended substitutes are packaged in 14-SOIC (0.154", 3.90mm Width) surface mount format, ensuring PCB layout compatibility. Packaging variants (Tube, Cut Tape & Digi-Reel®, Tape & Reel) affect supply chain handling but not circuit board assembly or electrical performance.

Q7: Which substitute is recommended for new design applications?

A: TL064IDR is recommended for new designs requiring direct TL064ID compatibility. For new designs without legacy constraints, LF347DT offers superior performance (16V/µs slew rate, 4 MHz bandwidth) with Active product status and extended temperature range. General Purpose substitutes (LM224DT, LM2902EDR2G) are recommended for cost-sensitive applications where J-FET input characteristics are not required.

Q8: What is the inventory status of substitute parts?

A: TL064IDR (35,100 units), LF347DT (27,321 units), and LM224DR2G (105,200 units) have the highest inventory availability. LF247DT (17,352 units) and LF347D (16,726 units) have moderate availability. LM248DT (1,479 units) and LM2902EDR2G (2,433 units) have limited inventory. For production continuity, Tier 1 and Tier 2 substitutes are preferred.

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