TL084ACDRE4 Equivalent & Substitute Parts

Part Overview

The TL084ACDRE4 is a J-FET input operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-SOIC surface mount package. This part is classified as obsolete, with 1060 units currently in stock. The obsolete status necessitates identification of equivalent and substitute components to ensure design continuity and procurement availability for applications requiring J-FET amplifier functionality with the specified electrical characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	TL084ACDRE4
Manufacturer	Texas Instruments
Amplifier Type	J-FET
Number of Circuits	4
Package / Case	14-SOIC (0.154", 3.90mm Width)
Slew Rate	13V/µs
Gain Bandwidth Product	3 MHz
Current - Input Bias	30 pA
Voltage - Input Offset	3 mV
Current - Supply	1.4mA (x4 Channels)
Current - Output / Channel	10 mA
Voltage - Supply Span (Min)	10 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TL084ACDRE4 is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: 4-circuit configuration
Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Slew Rate: 13V/µs or greater
Gain Bandwidth Product: 3 MHz or greater
Current - Input Bias: 30 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 1.4mA (x4 Channels) or lower
Current - Output / Channel: 10 mA or greater
Voltage - Supply Span: Minimum 10V to Maximum 30V or greater range
Operating Temperature: 0°C ~ 70°C or extended range
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories: direct Texas Instruments equivalents and cross-manufacturer alternatives. Direct equivalents maintain identical base product numbers (TL084) with variations in temperature grade and packaging. Cross-manufacturer alternatives provide functionally equivalent J-FET amplifier performance with enhanced electrical specifications.

Parameter Comparison

Parameter	TL084ACDRE4	TL084ACDR	LF247DT	LF347D	LF347DT	MC34074VDR2G	SC2902DG	TL074IYDT	TL084ACDT	TL084AIDT	TL084BCDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	onsemi	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose	J-FET	J-FET	J-FET	J-FET
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Slew Rate (V/µs)	13	13	16	16	16	13	—	13	16	16	16
Gain Bandwidth Product (MHz)	3	3	4	3	4	4.5	—	3	4	4	4
Current - Input Bias (pA)	30	30	20	20	20	100	90	20	20	20	20
Voltage - Input Offset (mV)	3	3	3	3	3	1	2	3	3	3	1
Current - Supply (mA x4 Channels)	1.4	1.4	1.4	1.4	1.4	1.9	—	1.4	1.4	1.4	1.4
Current - Output / Channel (mA)	10	10	40	40	40	30	40	40	40	40	40
Voltage - Supply Span Min (V)	10	10	44	44	44	3	3	6	6	6	6
Voltage - Supply Span Max (V)	30	30	44	44	44	44	32	36	36	36	36
Operating Temperature (°C)	0 ~ 70	0 ~ 70	-40 ~ 105	0 ~ 70	0 ~ 70	-40 ~ 125	-40 ~ 105	-40 ~ 105	0 ~ 70	-40 ~ 105	0 ~ 70
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1: Direct Equivalents (Recommended Primary Substitutes)

The TL084ACDR represents the closest direct equivalent to the TL084ACDRE4. Both are Texas Instruments J-FET amplifiers with identical electrical specifications and the same 14-SOIC package. The TL084ACDR maintains active product status with 2600 units in stock, ensuring long-term availability. This part is suitable for direct replacement in applications requiring the original 10V to 30V supply span and 0°C to 70°C operating temperature range.

The TL084ACDT, TL084AIDT, and TL084BCDT are STMicroelectronics variants of the TL084 base product. These parts provide enhanced electrical performance with 16V/µs slew rate and 4 MHz gain bandwidth product compared to the original 13V/µs and 3 MHz specifications. The TL084ACDT and TL084BCDT operate within the 0°C to 70°C temperature range matching the original part, while the TL084AIDT extends operation to -40°C to 105°C. All three variants feature AEC-Q100 automotive qualification and support expanded supply voltage ranges (6V to 36V), providing greater design flexibility. Inventory availability ranges from 888,600 units (TL084ACDT) to 2,936 units (TL084BCDT).

Tier 2: Cross-Manufacturer J-FET Alternatives

The LF347DT and LF347D from STMicroelectronics are J-FET amplifiers with enhanced output current capability (40 mA per channel versus 10 mA) and improved slew rate (16V/µs). These parts maintain the 3 MHz to 4 MHz gain bandwidth product range and support the same 14-SOIC package. The LF347DT operates at 0°C to 70°C with 27,321 units in stock, while the LF347D covers -40°C to 105°C with 16,726 units available. Both support 44V supply span, exceeding the original part's 30V maximum.

The LF247DT from STMicroelectronics provides similar J-FET performance with 16V/µs slew rate and 4 MHz gain bandwidth product. This part operates at -40°C to 105°C and supports 44V supply span with 17,352 units in stock.

The TL074IYDT from STMicroelectronics is a J-FET amplifier with 13V/µs slew rate and 3 MHz gain bandwidth product, matching the original electrical performance. This part extends operation to -40°C to 105°C and supports 6V to 36V supply span with 4,059 units in stock.

Tier 3: General Purpose Alternatives

The MC34074VDR2G from onsemi is a general purpose 4-circuit amplifier in 14-SOIC package with enhanced specifications including 4.5 MHz gain bandwidth product, 1 mV input offset voltage, and extended operating temperature range (-40°C to 125°C). This part supports 3V to 44V supply span and provides 30 mA output current per channel. With 2,611 units in stock, this part is suitable for applications where general purpose amplifier performance is acceptable and extended temperature operation is required.

The SC2902DG from onsemi is a general purpose 4-circuit amplifier with 40 mA output current per channel and 3V to 32V supply span. This part operates at -40°C to 105°C with 1,108 units in stock.

Compliance and Certification Status

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications. The TL084ACDT, TL084AIDT, and TL084BCDT variants carry AEC-Q100 automotive qualification, providing additional reliability assurance for automotive and harsh environment applications.

Frequently Asked Questions (FAQ)

Q: Can the TL084ACDR be used as a direct replacement for the TL084ACDRE4?

A: Yes. The TL084ACDR is a direct equivalent with identical electrical specifications, package type, and operating temperature range. The primary difference is product status (active versus obsolete) and packaging format (Cut Tape & Digi-Reel versus the original format). Electrical performance and pinout are identical.

Q: What is the difference between the TL084ACDT and TL084AIDT variants?

A: Both are STMicroelectronics TL084 variants with identical electrical specifications. The primary difference is operating temperature range: TL084ACDT operates at 0°C to 70°C, while TL084AIDT extends to -40°C to 105°C. Both feature AEC-Q100 automotive qualification and enhanced performance (16V/µs slew rate, 4 MHz gain bandwidth product) compared to the original TL084ACDRE4.

Q: Why do the LF347 and LF247 parts have higher output current specifications?

A: The LF347DT, LF347D, and LF247DT are designed with enhanced output drive capability (40 mA per channel) compared to the original TL084ACDRE4 (10 mA per channel). This increased output current capacity allows these parts to drive lower impedance loads while maintaining signal integrity. Applications requiring higher output current benefit from these alternatives.

Q: Are the general purpose amplifiers (MC34074VDR2G, SC2902DG) suitable replacements?

A: General purpose amplifiers differ from J-FET input amplifiers in input bias current characteristics. The MC34074VDR2G and SC2902DG feature input bias currents in the nanoampere range (100 nA and 90 nA respectively) compared to the J-FET input bias current of 30 pA in the original part. Applications sensitive to input bias current or requiring ultra-low input current should use J-FET alternatives. General purpose amplifiers are suitable for applications where input bias current is not a critical design parameter.

Q: What supply voltage range should be considered when selecting a substitute?

A: The original TL084ACDRE4 supports 10V to 30V supply span. Most substitute parts support wider ranges: TL084 variants support 6V to 36V, LF347 and LF247 support 44V, and general purpose alternatives support 3V to 44V. Designs operating within the original 10V to 30V range are compatible with all substitute options. Designs requiring operation below 10V or above 30V should select substitutes with appropriate supply voltage specifications.

Q: Is the 14-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 14-SOIC package with 0.154" (3.90mm) width, ensuring mechanical and electrical compatibility. Pinout is identical across all J-FET amplifier variants (TL084, LF347, LF247, TL074). General purpose amplifiers (MC34074VDR2G, SC2902DG) also use the same 14-SOIC package with identical pinout.

Q: What is the significance of AEC-Q100 qualification on the TL084 variants?

A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. The TL084ACDT, TL084AIDT, and TL084BCDT carry this qualification, making them suitable for automotive applications and harsh environment deployments where enhanced reliability assurance is required.

Q: How does the gain bandwidth product affect circuit performance?

A: Gain bandwidth product (GBW) determines the frequency response characteristics of the amplifier. The original TL084ACDRE4 has 3 MHz GBW. Substitute parts with 4 MHz or 4.5 MHz GBW provide improved high-frequency performance and faster transient response. Applications operating at frequencies below 3 MHz are unaffected by higher GBW specifications. Applications requiring enhanced frequency response benefit from higher GBW alternatives.

Q: What inventory considerations should guide substitute selection?

A: The TL084ACDT has the highest inventory availability (888,600 units), followed by LF347DT (27,321 units) and LF247DT (17,352 units). The TL084ACDR provides 2,600 units as a direct Texas Instruments equivalent. For long-term procurement security and lead time mitigation, parts with higher inventory levels are preferred. However, all listed substitutes maintain active product status, ensuring continued availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message