TL074BCDRE4 Equivalent & Substitute Parts

Part Overview

The TL074BCDRE4 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 discontinued at DiGi Electronics, indicating limited availability through standard distribution channels. The part operates across a supply voltage range of 10V to 30V with a slew rate of 13V/µs and gain bandwidth product of 5.25 MHz. Due to its discontinued status, equivalent substitute parts with compatible electrical and mechanical specifications are necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Amplifier Type	J-FET
Number of Circuits	4
Slew Rate	13V/µs
Gain Bandwidth Product	5.25 MHz
Current - Input Bias	65 pA
Voltage - Input Offset	2 mV
Current - Supply	1.4 mA (x4 Channels)
Voltage - Supply Span (Min)	10 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 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 TL074BCDRE4 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: Four independent operational amplifiers
Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface mount technology
Supply Voltage Range: Minimum 10V to maximum 30V compatibility
Operating Temperature: 0°C to 70°C range
RoHS Compliance: ROHS3 Compliant status

Secondary Compatibility Parameters:

Slew Rate: 13V/µs nominal performance
Gain Bandwidth Product: 5.25 MHz specification
Input Bias Current: 65 pA maximum
Input Offset Voltage: 2 mV maximum
Supply Current: 1.4 mA per four channels

Substitute parts are grouped into two categories: direct J-FET replacements maintaining identical amplifier topology, and general-purpose alternatives offering compatible electrical performance within the specified supply and temperature ranges.

Parameter Comparison

Parameter	TL074BCDRE4	TL074BCDR	LF247DT	LF347DT	TL074ACDT	TL074BCDT	TL074CDT	TL074IDT	ADA4004-4ARZ-R7	LM224DT
Amplifier Type	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4	4	4
Slew Rate (V/µs)	13	13	16	16	13	13	13	13	2.7	0.4
Gain Bandwidth Product (MHz)	5.25	5.25	4	3	3	3	3	3	12	1.3
Current - Input Bias (pA)	65	65	20	20	20	20	30	20	40 nA	20 nA
Voltage - Input Offset (mV)	2	2	3	3	3	1	3	3	0.04 mV	2
Current - Supply (mA)	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	—	1.5
Voltage - Supply Span Min (V)	10	10	44	44	6	36	6	6	10	3
Voltage - Supply Span Max (V)	30	30	44	44	36	36	36	36	30	30
Operating Temperature (°C)	0 ~ 70	0 ~ 70	-40 ~ 105	0 ~ 70	0 ~ 70	0 ~ 70	0 ~ 70	-40 ~ 105	-40 ~ 125	-40 ~ 105
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1	1	1	1	1	1	1	1	3	1
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Highest Compatibility):

The TL074BCDR manufactured by Texas Instruments provides direct substitution for the TL074BCDRE4. Both parts share identical electrical specifications including 13V/µs slew rate, 5.25 MHz gain bandwidth product, and 65 pA input bias current. The TL074BCDR maintains active product status with 888,700 units in stock, ensuring supply continuity. Packaging and RoHS compliance are identical. This part is the primary recommended substitute.

Tier 2 - J-FET Topology Alternatives (Compatible Amplifier Type):

The TL074ACDT, TL074BCDT, TL074CDT, and TL074IDT are STMicroelectronics-manufactured J-FET operational amplifiers with identical four-circuit configuration and 14-SOIC packaging. These parts maintain the J-FET input topology and supply current specifications of 1.4 mA per four channels. All are ROHS3 compliant with MSL 1 rating. The TL074CDT offers the highest inventory availability at 107,800 units. Supply voltage ranges vary: TL074ACDT and TL074CDT support 6V to 36V, while TL074BCDT specifies 36V fixed. Operating temperature ranges extend to -40°C to 105°C for TL074IDT, providing broader environmental coverage than the original part.

Tier 3 - Enhanced Performance Alternative:

The LF247DT and LF347DT from STMicroelectronics provide J-FET amplifier configurations with improved slew rate performance at 16V/µs. These parts maintain 1.4 mA supply current and 14-SOIC packaging. However, supply voltage specifications differ significantly: both specify 44V fixed supply voltage, which exceeds the TL074BCDRE4 maximum of 30V. Operating temperature for LF347D is limited to 0°C to 70°C, matching the original part. LF247DT extends to -40°C to 105°C. These parts are suitable only for applications requiring higher slew rate performance within compatible voltage domains.

Tier 4 - General Purpose Alternatives (Different Topology):

The ADA4004-4ARZ-R7 from Analog Devices and LM224DT from STMicroelectronics are general-purpose operational amplifiers with four circuits in 14-SOIC packaging. These parts do not employ J-FET input topology. The ADA4004-4ARZ-R7 offers superior gain bandwidth product at 12 MHz and extended operating temperature to -40°C to 125°C, but exhibits lower slew rate at 2.7V/µs and significantly higher input bias current at 40 nA. The LM224DT provides the widest supply voltage range from 3V to 30V but offers minimal slew rate performance at 0.4V/µs. These alternatives are applicable only when J-FET input characteristics are not critical to circuit function.

Compliance and Availability Considerations:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity level 1 (unlimited) is preserved across Tier 1 and Tier 2 alternatives, eliminating special handling requirements. The ADA4004-4ARZ-R7 specifies MSL 3 (168 hours), requiring controlled storage conditions. Current inventory levels support immediate procurement for all active alternatives, with TL074CDT offering maximum availability at 107,800 units.

Frequently Asked Questions (FAQ)

Q: Can the TL074BCDR directly replace the TL074BCDRE4 without circuit modification?

A: Yes. The TL074BCDR is electrically and mechanically identical to the TL074BCDRE4. Both parts share the same slew rate (13V/µs), gain bandwidth product (5.25 MHz), input bias current (65 pA), and supply voltage range (10V to 30V). The 14-SOIC package pinout is identical. No circuit redesign is required.

Q: What is the primary difference between J-FET and general-purpose operational amplifiers in this product category?

A: J-FET input amplifiers feature extremely low input bias current (20 to 65 pA range) and high input impedance, making them suitable for high-impedance signal sources and precision measurement applications. General-purpose amplifiers such as the ADA4004-4ARZ-R7 and LM224DT employ bipolar input stages with significantly higher input bias current (20 to 40 nA range). Selection depends on whether the application requires the low-bias-current characteristics of J-FET topology.

Q: Why do the LF247DT and LF347DT specify 44V fixed supply voltage when the original part operates at 10V to 30V?

A: The LF247DT and LF347DT are designed for applications requiring higher supply voltage operation. The 44V specification indicates these parts are rated for operation at that fixed voltage level, not a range. These parts are not suitable for the 10V to 30V supply domain of the TL074BCDRE4 unless the application circuit is redesigned to operate at 44V.

Q: Is the TL074IDT suitable for extended temperature range applications?

A: Yes. The TL074IDT extends the operating temperature range to -40°C to 105°C compared to the original TL074BCDRE4 specification of 0°C to 70°C. This part maintains identical electrical specifications and 14-SOIC packaging, making it suitable for applications requiring broader environmental operation while preserving J-FET input topology.

Q: What does MSL 3 (168 hours) mean for the ADA4004-4ARZ-R7?

A: Moisture Sensitivity Level 3 indicates the part requires controlled storage conditions with maximum floor life of 168 hours (7 days) after exposure to ambient humidity before soldering. This contrasts with MSL 1 (unlimited) parts such as the TL074BCDR, which have no floor life restrictions. MSL 3 parts require desiccant packaging and may require baking before assembly in high-humidity environments.

Q: Can the LM224DT replace the TL074BCDRE4 in audio signal processing applications?

A: The LM224DT is not recommended for audio applications requiring the slew rate performance of the TL074BCDRE4. The LM224DT specifies 0.4V/µs slew rate compared to 13V/µs for the original part. This 32-fold reduction in slew rate will introduce significant distortion in audio frequency signals. The LM224DT is suitable only for low-frequency, low-bandwidth applications such as sensor signal conditioning or precision DC amplification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance status. The original TL074BCDRE4 is also ROHS3 compliant. This ensures compatibility with environmental regulations and procurement requirements across all alternatives.

Q: What is the inventory advantage of selecting TL074CDT over TL074BCDR?

A: The TL074CDT offers 107,800 units in stock compared to 888,700 units for TL074BCDR. While both are active products, the TL074BCDR provides superior supply assurance. However, the TL074CDT remains a viable alternative with substantial inventory availability. Selection should prioritize the TL074BCDR as the primary choice, with TL074CDT as a secondary option if supply constraints emerge.

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