TL064BCDG4 Equivalent & Substitute Parts

Part Overview

The TL064BCDG4 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 limited future availability. The TL064BCDG4 operates across a supply voltage range of 10V to 30V with low input bias current of 30 pA and is suitable for precision analog signal processing applications requiring low input offset voltage and moderate bandwidth characteristics.

Alternative equivalent and substitute parts are necessary due to the Last Time Buy status of the TL064BCDG4, which restricts long-term procurement availability. Identifying functionally compatible alternatives ensures design continuity and supply chain reliability.

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	2	mV
Current - Supply (x4 Channels)	200	µA
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

Substitution of the TL064BCDG4 is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: 4 independent operational amplifiers
Package / Case: 14-SOIC surface mount form factor
Voltage - Supply Span: Minimum 10V to Maximum 30V compatibility
Operating Temperature: 0°C to 70°C range

Secondary Compatibility Parameters:

Slew Rate: 3.5 V/µs or greater
Gain Bandwidth Product: 1 MHz or greater
Current - Input Bias: 30 pA or lower
Voltage - Input Offset: 2 mV or lower
Current - Supply: 200 µA per 4 channels or lower

Substitute parts are grouped into two categories:

Category 1: Direct Texas Instruments J-FET Equivalents Parts TL064BCD and TL064BCDR maintain identical electrical specifications and differ only in packaging format (Tube vs. Tape & Reel). These represent the closest functional equivalents.

Category 2: Cross-Manufacturer J-FET Alternatives Parts LF247DT, LF347D, and LF347DT from STMicroelectronics and LT1465CS#PBF from Analog Devices provide J-FET input functionality with enhanced performance characteristics (higher slew rate, greater bandwidth, lower input bias current) while maintaining 14-SOIC packaging and compatible supply voltage ranges.

Category 3: General Purpose Amplifier Alternatives Parts LM248DT, LM2902AWYDT, LM324ADR2G, and LM324ADT offer general purpose amplifier functionality in 4-circuit 14-SOIC configuration. These parts feature different amplifier topology (not J-FET) and lower supply voltage minimums (3V), suitable for applications where J-FET input characteristics are not mandatory.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
TL064BCDG4	Texas Instruments	J-FET	3.5	1	30	2	200	10	30	0 to 70	14-SOIC	Last Time Buy
TL064BCD	Texas Instruments	J-FET	3.5	1	30	2	200	10	30	0 to 70	14-SOIC	Last Time Buy
TL064BCDR	Texas Instruments	J-FET	3.5	1	30	2	200	10	30	0 to 70	14-SOIC	Active
LF247DT	STMicroelectronics	J-FET	16	4	20	3	1400	44	44	-40 to 105	14-SOIC	Active
LF347D	STMicroelectronics	J-FET	16	3	20	3	1400	44	44	0 to 70	14-SOIC	Active
LF347DT	STMicroelectronics	J-FET	16	4	20	3	1400	44	44	0 to 70	14-SOIC	Active
LT1465CS#PBF	Analog Devices Inc.	J-FET	0.9	1	0.5	0.6	145	10	30	-40 to 85	14-SOIC	Active
LM248DT	STMicroelectronics	General Purpose	0.5	1.3	30000	1	2100	44	44	-40 to 105	14-SOIC	Active
LM2902AWYDT	STMicroelectronics	General Purpose	0.4	1.3	20000	2	1500	3	30	-40 to 125	14-SOIC	Active
LM324ADR2G	onsemi	General Purpose	—	1	40000	2	1500	3	32	0 to 70	14-SOIC	Active
LM324ADT	STMicroelectronics	General Purpose	0.4	1.3	20000	2	1500	3	30	0 to 70	14-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

TL064BCDR is the recommended primary substitute for TL064BCDG4. Both parts maintain identical electrical specifications across all critical parameters. TL064BCDR carries Active product status with significantly higher inventory availability (10,400 units) compared to the Last Time Buy TL064BCDG4 (938 units). The only difference is packaging format: TL064BCDR is supplied in Tape & Reel format versus Tube format for TL064BCDG4. Both are ROHS3 compliant and carry identical compliance certifications.

TL064BCD serves as a secondary direct equivalent, offering identical electrical performance with Last Time Buy status. This part is available in Tube packaging with 1,795 units in stock.

For Enhanced Performance Requirements:

LT1465CS#PBF from Analog Devices Inc. provides superior input bias current performance (0.5 pA versus 30 pA) and exceptional input offset voltage (600 µV versus 2 mV) while maintaining J-FET input topology and compatible 10V to 30V supply range. This part is suitable for applications requiring ultra-low input bias current. Product status is Active with 5,145 units available.

LF347DT from STMicroelectronics offers increased slew rate (16 V/µs versus 3.5 V/µs) and higher gain bandwidth product (4 MHz versus 1 MHz) with J-FET input configuration. Supply voltage requirement is 44V fixed (not variable 10-30V range). This part is Active status with 27,321 units in stock and is suitable for high-speed signal processing applications.

For Cost-Optimized Alternatives:

LM324ADT from STMicroelectronics provides general purpose amplifier functionality in 4-circuit 14-SOIC configuration with Active product status and highest inventory availability (55,200 units). This part operates from 3V to 30V supply range, expanding application flexibility. Input bias current is significantly higher (20 nA versus 30 pA), making this suitable for applications where ultra-low input bias is not critical. This represents the most readily available alternative.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status consistent with the original TL064BCDG4.

Frequently Asked Questions (FAQ)

Q: Can TL064BCDR directly replace TL064BCDG4 in existing designs?

A: Yes. TL064BCDR is electrically identical to TL064BCDG4 across all specified parameters. The only difference is packaging format (Tape & Reel versus Tube). Both use 14-SOIC surface mount package with identical pinout and electrical characteristics. No circuit modifications are required.

Q: What is the key difference between J-FET and General Purpose amplifier substitutes?

A: J-FET input amplifiers (TL064BCDG4, TL064BCD, TL064BCDR, LF247DT, LF347D, LF347DT, LT1465CS#PBF) feature extremely low input bias current (measured in picoamperes) and are suitable for high-impedance signal sources and precision measurement circuits. General Purpose amplifiers (LM248DT, LM2902AWYDT, LM324ADR2G, LM324ADT) have higher input bias current (measured in nanoamperes) but offer lower cost and wider supply voltage ranges. Selection depends on application requirements for input impedance and bias current performance.

Q: Why do LF247DT and LF347DT require 44V supply while TL064BCDG4 operates on 10-30V?

A: LF247DT and LF347DT are specified with fixed 44V supply voltage, which differs from the variable 10-30V range of TL064BCDG4. These parts are not suitable for applications requiring the lower 10V minimum supply voltage. However, they provide superior slew rate and bandwidth performance for applications where 44V supply is available.

Q: Is LT1465CS#PBF suitable as a direct substitute despite lower slew rate?

A: LT1465CS#PBF offers exceptional input bias current (0.5 pA) and input offset voltage (600 µV) performance superior to TL064BCDG4, but features lower slew rate (0.9 V/µs versus 3.5 V/µs). This part is suitable for precision low-speed analog signal processing and measurement applications. For high-speed signal processing, higher slew rate alternatives are recommended.

Q: What is the advantage of LM324ADT over J-FET alternatives?

A: LM324ADT provides the highest inventory availability (55,200 units) among all alternatives and operates from lower supply voltages (3V minimum versus 10V for J-FET types). This general purpose amplifier is suitable for cost-sensitive applications where ultra-low input bias current is not required. Trade-off is higher input bias current (20 nanoamperes versus 30 picoamperes for J-FET types).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TL064BCD, TL064BCDR, LF247DT, LF347D, LF347DT, LM248DT, LM2902AWYDT, LM324ADR2G, LM324ADT, LT1465CS#PBF) are ROHS3 compliant with MSL Level 1 rating and REACH Unaffected status, matching the compliance profile of TL064BCDG4.

Q: Which substitute offers the best long-term availability?

A: TL064BCDR carries Active product status with 10,400 units in stock, providing superior long-term availability compared to Last Time Buy TL064BCDG4. LM324ADT offers the highest inventory level (55,200 units) among all alternatives. Both parts are recommended for new designs requiring long-term supply assurance.

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