TL064CD Equivalent & Substitute Parts

Part Overview

The TL064CD is a J-FET input operational amplifier containing four independent circuits in a 14-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as Last Time Buy, indicating discontinued production status. The TL064CD operates across a supply voltage range of 10V to 30V with low input bias current (30 pA) and moderate slew rate (3.5V/µs), making it suitable for precision signal conditioning and low-noise amplification applications. Due to its Last Time Buy status, equivalent and substitute parts are necessary for ongoing design support and production continuity.

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 (x4 Channels)	200	µA
Current - Output / Channel	20	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°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 TL064CD are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Direct Electrical Equivalents (Tier 1): Parts maintaining identical or superior electrical specifications within the J-FET amplifier category, including slew rate, gain bandwidth product, input bias current, and supply voltage range. These parts preserve the original design intent and require no circuit modifications.

Compatible Alternatives (Tier 2): Parts with enhanced electrical performance characteristics (higher slew rate, greater bandwidth, improved input bias current) while maintaining the same package footprint (14-SOIC) and surface mount technology. These parts are electrically backward compatible but offer improved performance margins.

Functional Substitutes (Tier 3): Parts with different amplifier topology (general purpose vs. J-FET) but equivalent circuit count and package, suitable only when the specific J-FET characteristics are not critical to the application.

The key parameters determining substitution eligibility are: amplifier type (J-FET preferred), number of circuits (4 required), package type (14-SOIC mandatory), mounting technology (surface mount required), and supply voltage compatibility (minimum 10V span required for TL064CD applications).

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)	Packaging	Product Status
TL064CD	Texas Instruments	J-FET	3.5	1	30	10	30	0 to 70	Tube	Last Time Buy
TL064CDR	Texas Instruments	J-FET	3.5	1	30	10	30	0 to 70	Cut Tape / Digi-Reel	Active
TL064CDT	STMicroelectronics	J-FET	3.5	1	30	6	36	0 to 70	Cut Tape / Digi-Reel	Active
TL064ACDT	STMicroelectronics	J-FET	3.5	1	30	6	36	0 to 70	Tape & Reel	Active
TL064CD	STMicroelectronics	J-FET	3.5	1	30	6	36	0 to 70	Tube	Active
TL064IDT	STMicroelectronics	J-FET	3.5	1	30	6	36	-40 to 105	Cut Tape / Digi-Reel	Active
LF247DT	STMicroelectronics	J-FET	16	4	20	44	44	-40 to 105	Tape & Reel	Active
LF347D	STMicroelectronics	J-FET	16	3	20	44	44	0 to 70	Tube	Active
LF347DT	STMicroelectronics	J-FET	16	4	20	44	44	0 to 70	Cut Tape / Digi-Reel	Active
TL074IYDT	STMicroelectronics	J-FET	13	3	20	6	36	-40 to 105	Cut Tape / Digi-Reel	Active
MC3403DR2G	onsemi	General Purpose	0.6	1	200	3	36	0 to 70	Cut Tape / Digi-Reel	Active

Engineering Selection Recommendations

Tier 1 Direct Equivalents (Recommended for Drop-In Replacement):

TL064CDR and TL064CD (STMicroelectronics) maintain identical electrical specifications to the original TL064CD while offering Active product status. Both parts are ROHS3 compliant and MSL Level 1. TL064CDR is available in Cut Tape / Digi-Reel packaging with 55,100 units in stock, providing superior supply chain availability. TL064CD (STMicroelectronics) is available in Tube packaging with 11,300 units in stock. These parts require no design modifications and are suitable for direct substitution in existing applications.

Tier 1+ Enhanced Compatibility (Extended Supply Range):

TL064CDT, TL064ACDT, and TL064IDT (STMicroelectronics) provide identical electrical performance with expanded supply voltage range (6V to 36V vs. 10V to 30V). TL064IDT additionally supports extended operating temperature range (-40°C to 105°C) and is available in Cut Tape / Digi-Reel packaging with 16,553 units in stock. These parts are suitable for applications requiring broader supply voltage tolerance.

Tier 2 Enhanced Performance (Higher Slew Rate and Bandwidth):

LF247DT, LF347D, and LF347DT offer superior electrical performance with 16V/µs slew rate and 3-4 MHz gain bandwidth product compared to the original 3.5V/µs and 1 MHz. These parts maintain J-FET input characteristics with lower input bias current (20 pA vs. 30 pA) and higher output current capability (40 mA vs. 20 mA). LF347DT is available in Cut Tape / Digi-Reel packaging with 27,321 units in stock. These parts are suitable for applications requiring faster signal response and higher output drive capability.

Tier 2+ Extended Temperature Performance:

TL074IYDT combines enhanced slew rate (13V/µs) and bandwidth (3 MHz) with extended operating temperature range (-40°C to 105°C) and expanded supply voltage range (6V to 36V). This part is available in Cut Tape / Digi-Reel packaging with 4,059 units in stock. Suitable for industrial and automotive applications requiring temperature extremes.

Tier 3 Functional Alternative (Different Topology):

MC3403DR2G (onsemi) is a general purpose amplifier with identical circuit count and package footprint. This part differs in amplifier topology (general purpose vs. J-FET) and exhibits higher input bias current (200 nA vs. 30 pA) and lower slew rate (0.6V/µs vs. 3.5V/µs). This part is suitable only when J-FET input characteristics are not critical to application performance. Available in Cut Tape / Digi-Reel packaging with 20,100 units in stock.

All recommended substitutes are ROHS3 compliant, MSL Level 1, and carry EAR99 ECCN classification matching the original part.

Frequently Asked Questions (FAQ)

Q: Can TL064CDR be used as a direct replacement for TL064CD?

A: Yes. TL064CDR maintains identical electrical specifications (3.5V/µs slew rate, 1 MHz bandwidth, 30 pA input bias current, 10V to 30V supply range) and package footprint (14-SOIC surface mount). The only difference is packaging format (Cut Tape / Digi-Reel vs. Tube). No circuit modifications are required.

Q: What is the difference between TL064CDT and TL064ACDT?

A: Both parts are manufactured by STMicroelectronics with identical electrical specifications. The primary difference is packaging: TL064CDT is supplied in Cut Tape / Digi-Reel format, while TL064ACDT is supplied in Tape & Reel format. Both support expanded supply voltage range (6V to 36V) compared to the original TL064CD (10V to 30V).

Q: Can LF347DT replace TL064CD in all applications?

A: LF347DT is electrically compatible but offers enhanced performance characteristics: 16V/µs slew rate (vs. 3.5V/µs), 4 MHz bandwidth (vs. 1 MHz), and 40 mA output current (vs. 20 mA). These improvements are backward compatible and will not cause circuit malfunction. However, the higher slew rate may introduce different noise characteristics in sensitive analog circuits. Verification is recommended for precision instrumentation applications.

Q: What is the supply voltage compatibility between TL064CD and TL064IDT?

A: TL064CD operates from 10V to 30V. TL064IDT operates from 6V to 36V, providing a wider supply range. TL064IDT is suitable for applications requiring lower minimum supply voltage (6V) or higher maximum supply voltage (36V). Both parts maintain identical electrical performance within their respective supply ranges.

Q: Why does MC3403DR2G have higher input bias current than TL064CD?

A: MC3403DR2G is a general purpose amplifier topology, while TL064CD uses J-FET input architecture. J-FET inputs inherently exhibit lower input bias current (30 pA) compared to general purpose designs (200 nA). MC3403DR2G is suitable only for applications where input bias current specification is not critical.

Q: Is TL064IDT suitable for extended temperature applications?

A: Yes. TL064IDT supports operating temperature range of -40°C to 105°C, compared to TL064CD's 0°C to 70°C range. This extended temperature capability makes TL064IDT suitable for industrial, automotive, and military applications requiring operation beyond standard commercial temperature limits.

Q: What packaging options are available for TL064 equivalents?

A: TL064 equivalents are available in three packaging formats: Tube (bulk packaging for standard applications), Cut Tape / Digi-Reel (for automated assembly), and Tape & Reel (for high-volume production). All maintain identical 14-SOIC footprint and surface mount technology. Selection depends on production volume and assembly equipment compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts (TL064CDR, TL064CDT, TL064ACDT, TL064IDT, LF247DT, LF347D, LF347DT, TL074IYDT, and MC3403DR2G) are ROHS3 compliant with MSL Level 1 moisture sensitivity rating, matching the original TL064CD specifications.

Q: What is the inventory status of substitute parts?

A: TL064CDR has the highest inventory (55,100 units), followed by LF347DT (27,321 units) and TL064IDT (16,553 units). All recommended substitutes maintain active production status with adequate stock levels for ongoing supply chain continuity.

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