TL064BCD Equivalent & Substitute Parts

Part Overview

The TL064BCD is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a 4-circuit device in 14-SOIC surface mount packaging. This device is classified as Last Time Buy, indicating discontinued production status. The TL064BCD operates across a supply voltage range of 10V to 30V with an operating temperature range of 0°C to 70°C. Due to its Last Time Buy status, identifying equivalent and substitute parts is necessary for design continuity and long-term component availability in production environments.

Key Parameters

Parameter	Value
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	200 µA (x4 Channels)
Voltage - Supply Span	10 V to 30 V
Operating Temperature	0°C to 70°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TL064BCD is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type (J-FET vs. General Purpose)
Number of Circuits (4-circuit configuration)
Package / Case (14-SOIC form factor)
Voltage - Supply Span compatibility (minimum 10V to 30V range)
Operating Temperature range (minimum 0°C to 70°C)

Substitution Categories:

Category 1: Direct Equivalent (Same Amplifier Type - J-FET) Parts maintaining J-FET input architecture with identical 4-circuit configuration and compatible electrical parameters. These provide the closest functional equivalence.

Category 2: Enhanced Performance J-FET Alternatives J-FET amplifiers with superior electrical characteristics (higher slew rate, higher gain bandwidth product) but maintaining the same circuit count and package form factor. These offer improved performance while preserving J-FET input characteristics.

Category 3: General Purpose Alternatives General Purpose amplifiers with 4-circuit configuration in 14-SOIC packaging. These differ in amplifier type but maintain circuit count and package compatibility. Selection requires verification of application-specific requirements regarding input bias current and offset voltage specifications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (mV)	Supply Current	Supply Voltage (V)	Temp Range (°C)	Packaging	Product Status
TL064BCD	Texas Instruments	J-FET	3.5	1	30 pA	2	200 µA (x4)	10-30	0 to 70	Tube	Last Time Buy
TL064BCDR	Texas Instruments	J-FET	3.5	1	30 pA	2	200 µA (x4)	10-30	0 to 70	Tape & Reel	Active
LF247DT	STMicroelectronics	J-FET	16	4	20 pA	3	1.4 mA (x4)	44	-40 to 105	Tape & Reel	Active
LF347D	STMicroelectronics	J-FET	16	3	20 pA	3	1.4 mA (x4)	44	0 to 70	Tube	Active
LF347DT	STMicroelectronics	J-FET	16	4	20 pA	3	1.4 mA (x4)	44	0 to 70	Cut Tape & Digi-Reel	Active
LM224ADT	STMicroelectronics	General Purpose	0.4	1.3	20 nA	2	1.5 mA	3-30	-40 to 105	Cut Tape & Digi-Reel	Active
LM248DT	STMicroelectronics	General Purpose	0.5	1.3	30 nA	1	2.1 mA (x4)	44	-40 to 105	Tape & Reel	Active
LM2902AWYDT	STMicroelectronics	General Purpose	0.4	1.3	20 nA	2	1.5 mA (x4)	3-30	-40 to 125	Tape & Reel	Active
LM324AD	STMicroelectronics	General Purpose	0.4	1.3	20 nA	2	1.5 mA	3-30	0 to 70	Tube	Active
LM324ADR2G	onsemi	General Purpose	—	1	40 nA	2	1.5 mA (x4)	3-32	0 to 70	Cut Tape & Digi-Reel	Active
LM324ADT	STMicroelectronics	General Purpose	0.4	1.3	20 nA	2	1.5 mA	3-30	0 to 70	Cut Tape & Digi-Reel	Active

Engineering Selection Recommendations

Tier 1 - Direct Substitution (Recommended for Immediate Replacement):

TL064BCDR is the primary substitute for TL064BCD. Both parts are manufactured by Texas Instruments with identical electrical specifications, J-FET amplifier type, and 4-circuit configuration. The only difference is packaging format: TL064BCDR is supplied in Tape & Reel format versus Tube format for the original part. TL064BCDR maintains Active product status, ensuring long-term availability. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are identical.

Tier 2 - Enhanced J-FET Alternatives (Performance Upgrade Path):

LF347DT and LF347D (STMicroelectronics) maintain J-FET input architecture with 4-circuit configuration in 14-SOIC packaging. These parts offer superior performance characteristics: 16 V/µs slew rate (versus 3.5 V/µs), 3-4 MHz gain bandwidth product (versus 1 MHz), and lower input bias current (20 pA versus 30 pA). Operating temperature range extends to 0°C to 70°C, matching the original specification. Supply voltage specification differs (44V fixed versus 10-30V range), requiring circuit verification. Both parts maintain Active status and full compliance certifications.

LF247DT provides similar J-FET performance enhancement with extended operating temperature range (-40°C to 105°C) and higher supply voltage specification (44V). Slew rate and gain bandwidth product exceed original specifications.

Tier 3 - General Purpose Alternatives (Functional Compatibility Required):

LM324ADT, LM324AD, and LM324ADR2G are General Purpose amplifiers with 4-circuit configuration in 14-SOIC packaging and Active product status. These parts differ fundamentally in amplifier type (General Purpose versus J-FET), resulting in significantly different input bias current characteristics (20-40 nanoamperes versus 30 picoamperes). Selection requires verification that application circuits tolerate higher input bias current. Supply voltage range (3-30V or 3-32V) encompasses the original 10-30V specification. All parts maintain ROHS3 compliance and full regulatory certifications.

LM224ADT and LM2902AWYDT offer similar General Purpose architecture with extended temperature ranges (-40°C to 105°C or -40°C to 125°C). LM2902AWYDT includes automotive qualification (AEC-Q100) and Push-Pull output configuration.

LM248DT provides General Purpose amplification with 1 mV input offset voltage (superior to 2 mV specification) but operates at fixed 44V supply voltage, requiring circuit redesign verification.

Frequently Asked Questions (FAQ)

Q: Can TL064BCDR directly replace TL064BCD without circuit modification?

A: Yes. TL064BCDR is electrically and functionally identical to TL064BCD. Both are J-FET amplifiers with 4 circuits, identical electrical specifications, and 14-SOIC packaging. The only difference is packaging format (Tape & Reel versus Tube). No circuit modification is required. TL064BCDR is the recommended direct substitute due to Active product status.

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

A: J-FET amplifiers (TL064BCD, LF347DT, LF247DT) feature extremely low input bias current (20-30 picoamperes), making them suitable for high-impedance signal sources and precision measurement applications. General Purpose amplifiers (LM324ADT, LM224ADT) have significantly higher input bias current (20-40 nanoamperes), approximately 1000 times greater. Applications requiring high input impedance or low bias current must use J-FET alternatives. General Purpose amplifiers are suitable for standard signal conditioning and buffering applications where input bias current is not a limiting factor.

Q: Are LF347DT and LF247DT compatible with circuits designed for TL064BCD?

A: LF347DT and LF247DT are J-FET amplifiers with 4-circuit configuration in 14-SOIC packaging, providing pin-compatible substitution. However, electrical specifications differ significantly. Slew rate increases from 3.5 V/µs to 16 V/µs, and gain bandwidth product increases from 1 MHz to 3-4 MHz. These enhanced specifications are generally backward-compatible in applications where higher performance is acceptable. Supply voltage specification differs (44V fixed versus 10-30V range), requiring verification that circuit power supplies can accommodate this specification. Input offset voltage increases from 2 mV to 3 mV. Applications sensitive to these parameter changes require detailed circuit analysis before substitution.

Q: What packaging options are available for TL064BCD substitutes?

A: Substitute parts are available in multiple packaging formats: Tube (TL064BCD, LF347D, LM324AD), Tape & Reel (TL064BCDR, LF247DT, LM248DT, LM2902AWYDT), and Cut Tape & Digi-Reel (LF347DT, LM224ADT, LM324ADR2G, LM324ADT). Selection depends on production volume and assembly process requirements. Tube packaging is suitable for lower-volume applications and manual assembly. Tape & Reel and Cut Tape & Digi-Reel formats are optimized for automated pick-and-place assembly in high-volume production environments.

Q: Why does TL064BCD have Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TL064BCD. Existing inventory is available for purchase, but no future production is planned. This status necessitates identifying substitute parts for long-term design continuity. TL064BCDR (Active status) provides the direct equivalent with assured long-term availability.

Q: Can General Purpose amplifiers replace J-FET amplifiers in all applications?

A: No. General Purpose amplifiers have input bias current approximately 1000 times higher than J-FET devices (20-40 nanoamperes versus 20-30 picoamperes). In applications with high-impedance signal sources (>1 MΩ), high input bias current causes unacceptable input offset voltage errors. Applications requiring precision measurement, photodiode transimpedance amplification, or high-impedance sensor interfacing must use J-FET amplifiers. General Purpose amplifiers are suitable for standard signal conditioning, buffering, and filtering applications where input impedance is moderate (<100 kΩ).

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance, indicating compliance with Restriction of Hazardous Substances Directive. All parts have REACH Unaffected status, indicating no substances of very high concern (SVHC) are present. All parts are classified under ECCN EAR99 (Export Control Classification Number), indicating standard commercial electronic components with no export restrictions. HTSUS classification 8542.33.0001 applies to all parts (Integrated circuits, microassemblies, and other semiconductor devices). These certifications ensure regulatory compliance across global markets.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates that these components have unlimited shelf life and require no special moisture control during storage or handling. No baking or desiccant storage is required. This classification simplifies inventory management and reduces component handling costs compared to higher MSL ratings.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message