TL064CDE4 Equivalent & Substitute Parts

Part Overview

The TL064CDE4 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 discontinued at DiGi Electronics but remains available through alternative sources and substitute manufacturers. The TL064CDE4 serves applications requiring low input bias current, low input offset voltage, and moderate slew rate performance in compact form factors. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and accommodate varying performance requirements across different application scenarios.

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	—

Substitute Part Grouping Explanation

Substitute parts for the TL064CDE4 are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Direct Electrical Equivalents (TL064 Series): Parts maintaining identical slew rate (3.5 V/µs), gain bandwidth product (1 MHz), input bias current (30 pA), and supply current specifications (200 µA x4 Channels). These include TL064CD, TL064CDT, TL064ACDT, and TL064IDT. All operate within the same voltage supply range (6 V to 36 V minimum/maximum) and maintain the same output current per channel (20 mA). These parts are direct functional replacements with identical electrical performance characteristics.

Enhanced Performance Alternatives (LF347/LF247 Series): Parts offering improved slew rate (16 V/µs for LF247DT and LF347DT; 13 V/µs for TL074IYDT), higher gain bandwidth product (3-4 MHz), and increased output current capability (40 mA per channel). These require verification of circuit design tolerance to higher performance parameters but maintain J-FET amplifier topology and 14-SOIC packaging. Supply voltage requirements differ (44 V fixed for LF247DT and LF347DT; 6-36 V for TL074IYDT).

Automotive Grade Alternative (TL084ACDT): Meets AEC-Q100 qualification with enhanced slew rate (16 V/µs) and gain bandwidth product (4 MHz). Maintains 14-SOIC packaging and J-FET topology with extended supply voltage range (6-36 V).

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Supply Current (µA)	Output Current (mA)	Supply Span Min (V)	Supply Span Max (V)	Temp Range (°C)	Status
TL064CDE4	Texas Instruments	3.5	1	30	200	20	10	30	0 to 70	Discontinued
TL064CD	STMicroelectronics	3.5	1	30	200	20	6	36	0 to 70	Active
TL064CDT	STMicroelectronics	3.5	1	30	200	20	6	36	0 to 70	Active
TL064ACDT	STMicroelectronics	3.5	1	30	200	20	6	36	0 to 70	Active
TL064IDT	STMicroelectronics	3.5	1	30	200	20	6	36	-40 to 105	Active
TL074IYDT	STMicroelectronics	13	3	20	1400	40	6	36	-40 to 105	Active
LF247DT	STMicroelectronics	16	4	20	1400	40	44	44	-40 to 105	Active
LF347D	STMicroelectronics	16	3	20	1400	40	44	44	0 to 70	Active
LF347DT	STMicroelectronics	16	4	20	1400	40	44	44	0 to 70	Active
TL084ACDT	STMicroelectronics	16	4	20	1400	40	6	36	0 to 70	Active

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance): Select TL064CD, TL064CDT, TL064ACDT, or TL064IDT for applications requiring exact electrical equivalence to the TL064CDE4. All maintain 3.5 V/µs slew rate, 1 MHz gain bandwidth product, and identical bias/offset specifications. TL064IDT provides extended temperature range (-40°C to 105°C) for industrial and automotive applications. All substitute TL064 variants are ROHS3 compliant and REACH unaffected, matching the original part's compliance status.

Enhanced Performance Selection: TL084ACDT is selected for applications requiring higher slew rate (16 V/µs) and gain bandwidth product (4 MHz) while maintaining compatibility with 6-36 V supply range. This part carries AEC-Q100 automotive qualification and is suitable for automotive-grade designs. TL074IYDT provides intermediate performance (13 V/µs slew rate, 3 MHz GBW) with extended temperature range and 6-36 V supply compatibility.

High-Performance Alternatives: LF247DT and LF347DT offer maximum slew rate (16 V/µs) and gain bandwidth product (4 MHz) but require fixed ±22 V supply voltage (44 V span). These parts are suitable only for designs with symmetric dual-supply architectures. LF347D provides similar performance with standard temperature range (0-70°C).

Packaging and Availability: All substitute parts maintain 14-SOIC surface mount packaging identical to the original TL064CDE4. Packaging variants (Tube, Cut Tape, Tape & Reel) affect procurement and handling but do not alter electrical performance. Inventory availability is highest for TL084ACDT (888,600 pcs), followed by LF347DT (27,321 pcs) and TL064IDT (16,553 pcs).

Frequently Asked Questions (FAQ)

Q: Can TL064CD be used as a direct replacement for TL064CDE4?

A: Yes. TL064CD maintains identical electrical specifications: 3.5 V/µs slew rate, 1 MHz gain bandwidth product, 30 pA input bias current, and 200 µA supply current. Both are J-FET amplifiers in 14-SOIC packaging. The primary difference is manufacturer (STMicroelectronics vs. Texas Instruments) and product status (Active vs. Discontinued). Electrical performance is equivalent.

Q: What is the difference between TL064ACDT and TL064IDT?

A: Both parts are electrically identical with 3.5 V/µs slew rate and 1 MHz gain bandwidth product. The primary difference is operating temperature range: TL064ACDT operates 0-70°C, while TL064IDT operates -40-105°C. Select TL064IDT for extended temperature applications; select TL064ACDT for standard industrial temperature range.

Q: Can TL084ACDT replace TL064CDE4 in any circuit?

A: TL084ACDT is electrically compatible but offers enhanced performance: 16 V/µs slew rate (vs. 3.5 V/µs) and 4 MHz gain bandwidth product (vs. 1 MHz). It maintains 14-SOIC packaging and J-FET topology. Circuits designed for TL064 specifications will function with TL084ACDT, but the higher slew rate may introduce different transient behavior. Verify circuit stability and noise performance if substituting in sensitive applications.

Q: Why do LF247DT and LF347DT require ±22 V supply voltage?

A: LF247DT and LF347DT are specified with 44 V supply span (fixed), indicating symmetric dual-supply operation (±22 V). These parts are not compatible with single-supply or asymmetric dual-supply designs used by TL064CDE4 (10-30 V range). Select these parts only for designs with fixed ±22 V supply architecture.

Q: What packaging options are available for TL064 substitutes?

A: TL064 substitutes are available in three packaging formats: Tube (TL064CD), Cut Tape & Digi-Reel (TL064CDT, TL064IDT), and Tape & Reel (TL064ACDT). All maintain identical 14-SOIC (0.154", 3.90mm width) physical dimensions. Packaging selection affects procurement method and tape/reel compatibility but does not alter electrical performance or pin configuration.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TL064CD, TL064CDT, TL064ACDT, TL064IDT, TL074IYDT, LF247DT, LF347D, LF347DT, TL084ACDT) are ROHS3 compliant and REACH unaffected, matching the original TL064CDE4 compliance status. All parts carry Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute offers the best inventory availability?

A: TL084ACDT has the highest inventory availability at 888,600 pieces. LF347DT follows with 27,321 pieces. If immediate availability is critical, TL084ACDT is the preferred choice, provided the enhanced performance specifications (16 V/µs slew rate, 4 MHz GBW) are compatible with the application.

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