TLE2141CD Equivalent & Substitute Parts

Part Overview

The TLE2141CD is a general-purpose operational amplifier manufactured by Texas Instruments in the Excalibur™ series. It is a single-circuit, 8-SOIC surface-mount device designed for linear amplification applications. The device operates across a wide supply voltage range of 4V to 44V and is rated for 0°C to 70°C operating temperature.

The TLE2141CD is currently in Last Time Buy status, indicating that production has been discontinued. This necessitates identification of equivalent and substitute parts for ongoing design requirements and procurement planning. Substitute parts must maintain functional compatibility through matching electrical parameters and mechanical packaging specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	45	V/µs
Gain Bandwidth Product	5.9	MHz
Current - Input Bias	700	nA
Voltage - Input Offset	200	µV
Current - Supply	3.5	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	44	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLE2141CD is determined by the following critical parameters:

Electrical Compatibility Criteria:

Amplifier type classification (General Purpose vs. J-FET)
Slew rate performance (45V/µs baseline)
Gain bandwidth product (5.9 MHz baseline)
Input bias current (700 nA baseline)
Input offset voltage (200 µV baseline)
Supply current consumption (3.5 mA baseline)
Output current capability (50 mA baseline)
Supply voltage range (4V to 44V minimum requirement)
Operating temperature range (0°C to 70°C minimum requirement)

Mechanical Compatibility Criteria:

Package type: 8-SOIC surface mount
Physical dimensions: 0.154" width, 3.90mm width
Mounting type: Surface mount

Regulatory Compliance:

RoHS3 compliance
Moisture sensitivity level MSL 1
REACH unaffected status

Substitute parts are grouped into two categories:

Category 1: Direct Substitutes (Same Amplifier Type) TLE2141CDR maintains identical electrical specifications and series classification as the main part, differing only in packaging format (Tape & Reel vs. Tube).

Category 2: Functional Alternatives (J-FET Amplifier Type) AD711KRZ, AD711KRZ-REEL, AD711KRZ-REEL7, AD8510BRZ, AD8510BRZ-REEL7, ADA4622-1ARZ-R7, LT1055S8#PBF, LT1055S8#TRPBF, and LT1056S8#PBF are J-FET amplifiers that provide alternative performance characteristics. These parts operate within compatible supply voltage ranges and maintain 8-SOIC packaging but exhibit different electrical performance profiles.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV)	Supply Current (mA/µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Packaging	Product Status
TLE2141CD	Texas Instruments	General Purpose	45	5.9	700 nA	200	3.5	50	4	44	0 to 70	Tube	Last Time Buy
TLE2141CDR	Texas Instruments	General Purpose	45	5.9	700 nA	200	3.5	50	4	44	0 to 70	Tape & Reel	Active
AD711KRZ	Analog Devices Inc.	J-FET	20	4	15 pA	200	2.5	25	9	36	0 to 70	Tube	Active
AD711KRZ-REEL	Analog Devices Inc.	J-FET	20	4	15 pA	200	2.5	25	9	36	0 to 70	Tape & Reel	Active
AD711KRZ-REEL7	Analog Devices Inc.	J-FET	20	4	15 pA	200	2.5	25	9	36	0 to 70	Cut Tape & Digi-Reel	Active
AD8510BRZ	Analog Devices Inc.	J-FET	20	8	25 pA	80	2.2	70	9	36	-40 to 125	Tube	Active
AD8510BRZ-REEL7	Analog Devices Inc.	J-FET	20	8	25 pA	80	2.2	70	9	36	-40 to 125	Cut Tape & Digi-Reel	Active
ADA4622-1ARZ-R7	Analog Devices Inc.	J-FET	23	8	2 pA	400	0.715	20	5	30	-40 to 125	Cut Tape & Digi-Reel	Active
LT1055S8#PBF	Analog Devices Inc.	J-FET	12	4.5	30 pA	500	2.8	—	10	36	0 to 70	Tube	Active
LT1055S8#TRPBF	Analog Devices Inc.	J-FET	12	4.5	30 pA	500	2.8	—	10	36	0 to 70	Tape & Reel	Active
LT1056S8#PBF	Analog Devices Inc.	J-FET	14	5.5	30 pA	500	5	—	10	36	0 to 70	Tube	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2141CDR

TLE2141CDR is the manufacturer-recommended direct substitute for TLE2141CD. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications across all measured parameters. The only difference is packaging format: TLE2141CDR is supplied in Tape & Reel format while TLE2141CD is supplied in Tube format. TLE2141CDR holds Active product status, ensuring continued availability and support. Both parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status. This substitution requires no circuit redesign or performance verification.

Secondary Recommendations: J-FET Amplifier Alternatives

When TLE2141CDR availability is constrained, J-FET amplifier alternatives may be considered for applications where the following conditions are met:

The AD711KRZ series (AD711KRZ, AD711KRZ-REEL, AD711KRZ-REEL7) maintains identical input offset voltage (200 µV) and operates within the 0°C to 70°C temperature range. However, these parts exhibit reduced slew rate (20V/µs vs. 45V/µs), lower gain bandwidth product (4 MHz vs. 5.9 MHz), and reduced output current capability (25 mA vs. 50 mA). Supply voltage range is restricted to 9V to 36V, which does not support the full 4V to 44V range of the original part.

The AD8510BRZ series (AD8510BRZ, AD8510BRZ-REEL7) provides improved gain bandwidth product (8 MHz) and output current (70 mA), with extended operating temperature range (-40°C to 125°C). Input offset voltage is superior (80 µV). However, slew rate remains reduced (20V/µs), and supply voltage range is limited to 9V to 36V.

The ADA4622-1ARZ-R7 offers rail-to-rail output capability, superior input bias current (2 pA), and extended temperature range (-40°C to 125°C). However, it exhibits higher input offset voltage (400 µV), significantly reduced output current (20 mA), and limited supply voltage range (5V to 30V).

The LT1055S8#PBF and LT1055S8#TRPBF provide 4.5 MHz gain bandwidth product and 12V/µs slew rate with 0°C to 70°C temperature range. Supply voltage minimum is 10V, exceeding the original part's 4V minimum. Output current specification is not provided.

The LT1056S8#PBF offers 5.5 MHz gain bandwidth product and 14V/µs slew rate, approaching original specifications. Supply voltage minimum is 10V. Output current specification is not provided.

All J-FET alternatives maintain 8-SOIC packaging, ROHS3 compliance, and MSL 1 rating. Selection of J-FET alternatives requires circuit-level analysis to confirm compatibility with application-specific supply voltage requirements and performance tolerances.

Frequently Asked Questions (FAQ)

Q: Can TLE2141CDR be used as a direct replacement for TLE2141CD without circuit modification?

A: Yes. TLE2141CDR is the manufacturer-recommended direct substitute. Both parts are identical in electrical performance and mechanical packaging. The only difference is the delivery format: TLE2141CDR is supplied in Tape & Reel format for automated assembly, while TLE2141CD is supplied in Tube format for manual handling. No circuit redesign is required.

Q: Why is the TLE2141CD listed as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part. Existing inventory will be sold until depletion, after which the part will no longer be available. TLE2141CDR, which maintains identical specifications, is the active replacement and will continue to be manufactured.

Q: What are the key differences between the TLE2141CD and the AD711KRZ?

A: Both parts are single-circuit, 8-SOIC operational amplifiers with identical input offset voltage (200 µV). However, they differ in amplifier architecture and performance: TLE2141CD is a general-purpose amplifier with 45V/µs slew rate and 5.9 MHz gain bandwidth product, while AD711KRZ is a J-FET amplifier with 20V/µs slew rate and 4 MHz gain bandwidth product. The AD711KRZ has superior input bias current (15 pA vs. 700 nA) but reduced output current capability (25 mA vs. 50 mA). Supply voltage range differs: TLE2141CD operates from 4V to 44V, while AD711KRZ operates from 9V to 36V.

Q: Can J-FET amplifiers be used in applications designed for the TLE2141CD?

A: J-FET substitutes may be used only if the application can tolerate reduced slew rate, lower gain bandwidth product, and restricted supply voltage range. Applications requiring the full 4V to 44V supply range cannot use AD711KRZ or AD8510BRZ series, which operate only from 9V to 36V. Applications requiring 45V/µs slew rate or 5.9 MHz gain bandwidth product cannot use J-FET alternatives. Circuit-level analysis is required to confirm compatibility.

Q: What is the difference between TLE2141CDR, AD711KRZ-REEL, and AD711KRZ-REEL7?

A: TLE2141CDR and AD711KRZ-REEL are both supplied in standard Tape & Reel format. AD711KRZ-REEL7 is supplied in Cut Tape & Digi-Reel® format, which is a specialized reel configuration. All three parts are electrically identical within their respective part families. The choice between packaging formats depends on assembly equipment compatibility and procurement requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference—TLE2141CD, TLE2141CDR, AD711KRZ series, AD8510BRZ series, ADA4622-1ARZ-R7, and LT1055/LT1056 series—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH unaffected status.

Q: What is the minimum supply voltage requirement for each substitute?

A: TLE2141CD and TLE2141CDR operate from 4V minimum. AD711KRZ, AD711KRZ-REEL, and AD711KRZ-REEL7 require 9V minimum. AD8510BRZ and AD8510BRZ-REEL7 require 9V minimum. ADA4622-1ARZ-R7 requires 5V minimum. LT1055S8#PBF, LT1055S8#TRPBF, and LT1056S8#PBF require 10V minimum. Applications with supply voltages below 9V cannot use J-FET alternatives.

Q: Which substitute offers the best input bias current performance?

A: ADA4622-1ARZ-R7 provides the lowest input bias current at 2 pA. AD711KRZ series provides 15 pA. AD8510BRZ series provides 25 pA. LT1055 and LT1056 series provide 30 pA. The original TLE2141CD has 700 nA input bias current, which is significantly higher than all J-FET alternatives.

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