TLE2064ACD Equivalent & Substitute Parts

Part Overview

The TLE2064ACD 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 discontinued production with limited availability. The TLE2064ACD contains 831 pieces in current inventory. Identification of equivalent and substitute parts is necessary due to product status transition and to ensure design continuity for applications requiring J-FET amplifier functionality with specified electrical characteristics.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	4	—
Slew Rate	3.4	V/µs
Gain Bandwidth Product	2	MHz
Current - Input Bias	4	pA
Voltage - Input Offset	900	µV
Current - Supply (x4 Channels)	1.25	mA
Current - Output / Channel	80	mA
Voltage - Supply Span (Min)	7	V
Voltage - Supply Span (Max)	36	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

Substitution of the TLE2064ACD is determined by strict alignment of electrical and mechanical parameters within the J-FET amplifier category. The primary substitution criteria are:

Mandatory Matching Parameters:

Amplifier Type: J-FET input configuration
Number of Circuits: 4 independent amplifier stages
Package / Case: 14-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Operating Temperature Range: Minimum 0°C to 70°C coverage

Critical Electrical Parameters for Substitution:

Slew Rate: 3.4 V/µs (determines signal fidelity in time-dependent applications)
Gain Bandwidth Product: 2 MHz (defines frequency response capability)
Current - Input Bias: 4 pA (ultra-low bias current characteristic of J-FET input)
Voltage - Input Offset: 900 µV (DC precision specification)
Voltage - Supply Span: 7 V to 36 V (power supply compatibility range)

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (Identical Parameters): Parts maintaining all critical electrical specifications with identical slew rate, gain bandwidth product, input bias current, and supply voltage range. These parts differ only in packaging format (Tube vs. Tape & Reel) or product status (Active vs. Last Time Buy).

Category B - Functional Alternatives (Modified Electrical Characteristics): Parts with J-FET input configuration and 4-circuit architecture in 14-SOIC packaging but with different electrical performance specifications. These parts are suitable for applications where the modified parameters (higher slew rate, increased bandwidth, different input bias current) are acceptable or beneficial.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Packaging	Product Status
TLE2064ACD	Texas Instruments	J-FET	3.4	2	4	900	7	36	Tube	Last Time Buy
TLE2064ACDR	Texas Instruments	J-FET	3.4	2	4	900	7	36	Tape & Reel	Active
LF347M/NOPB	Texas Instruments	J-FET	13	4	50	5000	10	36	Tube	Active
LF347MX/NOPB	Texas Instruments	J-FET	13	4	50	5000	10	36	Cut Tape & Digi-Reel	Active
LF444CM/NOPB	Texas Instruments	J-FET	1	1	10	3000	36	36	Tube	Active
LF444CMX/NOPB	Texas Instruments	J-FET	1	1	10	3000	36	36	Cut Tape & Digi-Reel	Active
LF247DT	STMicroelectronics	J-FET	16	4	20	3000	44	44	Tape & Reel	Active
LF347D	STMicroelectronics	J-FET	16	3	20	3000	44	44	Tube	Active
LF347DT	STMicroelectronics	J-FET	16	4	20	3000	44	44	Cut Tape & Digi-Reel	Active
NCS20074DR2G	onsemi	General Purpose	2.4	3.2	5	1300	2.7	36	Cut Tape & Digi-Reel	Active
OP4177ARZ	Analog Devices Inc.	General Purpose	0.7	1.3	500	15	5	30	Tube	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

The TLE2064ACDR is the primary substitute for the TLE2064ACD. This part maintains identical electrical specifications across all critical parameters: 3.4 V/µs slew rate, 2 MHz gain bandwidth product, 4 pA input bias current, and 900 µV input offset voltage. The sole difference is packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy). The TLE2064ACDR provides 4444 pieces in current inventory, ensuring supply continuity. Both parts are ROHS3 compliant and carry identical compliance certifications.

Secondary Recommendations - Functional Alternatives:

For applications where enhanced performance specifications are acceptable or beneficial:

LF347M/NOPB, LF347MX/NOPB, LF347D, LF347DT: These J-FET amplifiers provide increased slew rate (13–16 V/µs) and higher gain bandwidth product (3–4 MHz) compared to the TLE2064ACD. Input bias current is elevated to 20–50 pA. These parts are suitable for applications requiring faster signal response and wider bandwidth. All are Active status with substantial inventory availability.
LF444CM/NOPB, LF444CMX/NOPB: These J-FET amplifiers feature reduced slew rate (1 V/µs) and lower gain bandwidth product (1 MHz), with improved input bias current (10 pA). These parts are suitable for low-noise, low-speed applications where power consumption is critical. Supply voltage is fixed at 36 V.

Not Recommended for Direct Substitution:

NCS20074DR2G: General Purpose amplifier type (not J-FET input). While offering rail-to-rail output and lower supply voltage minimum (2.7 V), this part does not maintain J-FET input characteristics.
OP4177ARZ: General Purpose amplifier type with significantly different electrical characteristics (0.7 V/µs slew rate, 500 pA input bias current). Suitable only for applications where J-FET input characteristics are not required.

All recommended substitute parts are ROHS3 compliant and carry EAR99 ECCN classification matching the original part.

Frequently Asked Questions (FAQ)

Q1: Can TLE2064ACDR directly replace TLE2064ACD in existing designs?

A: Yes. The TLE2064ACDR is electrically identical to the TLE2064ACD across all specified parameters. The difference is packaging format (Tape & Reel versus Tube). Both parts are 14-SOIC surface mount devices with identical pinout, electrical performance, and compliance certifications. No circuit modifications are required.

Q2: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-quantity assembly. Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for automated pick-and-place assembly equipment. Electrical specifications and component performance are identical. Selection depends on assembly process requirements.

Q3: Why are LF347 and LF444 series listed as alternatives if they have different electrical specifications?

A: The LF347 and LF444 series maintain the core J-FET amplifier architecture and 4-circuit configuration in 14-SOIC packaging, but with modified electrical performance. These parts are listed as functional alternatives for applications where the different slew rate, bandwidth, or input bias current specifications are acceptable or beneficial. Direct substitution requires verification that the modified parameters do not violate application requirements.

Q4: Can I use NCS20074DR2G or OP4177ARZ as substitutes?

A: These parts are not recommended as direct substitutes. Both are General Purpose amplifier types rather than J-FET input amplifiers. While they share 14-SOIC packaging and 4-circuit configuration, they do not maintain the ultra-low input bias current (4 pA) characteristic of the TLE2064ACD. Use only if application requirements do not mandate J-FET input characteristics.

Q5: What compliance certifications apply to all substitute parts?

A: All listed substitute parts are ROHS3 compliant, carry EAR99 ECCN classification, and are REACH unaffected. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts except OP4177ARZ (MSL 3, 168 Hours). Verify MSL requirements for your specific assembly and storage conditions.

Q6: Which substitute part offers the highest inventory availability?

A: LF444CMX/NOPB provides the highest inventory with 30,100 pieces in stock, followed by LF347MX/NOPB with 25,200 pieces. Both are Active status with Cut Tape & Digi-Reel packaging suitable for automated assembly.

Q7: Are there supply voltage compatibility considerations when selecting substitutes?

A: Yes. The TLE2064ACD operates from 7 V to 36 V. The LF347 series operates from 10 V to 36 V (higher minimum). The LF444 series operates at fixed 36 V supply. The NCS20074DR2G operates from 2.7 V to 36 V (lower minimum). Verify that your power supply design meets the minimum voltage requirement of the selected substitute part.

Q8: What is the operating temperature range for substitute parts?

A: The TLE2064ACD operates from 0°C to 70°C. Most substitute parts (LF347, LF444 series) maintain this range. The LF247DT and NCS20074DR2G extend to -40°C to 105°C and -40°C to 125°C respectively. The OP4177ARZ operates from -40°C to 125°C. Select based on your application's temperature requirements.

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