TLE2141AIP Equivalent & Substitute Parts

Part Overview

The TLE2141AIP is a general-purpose operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is a single-circuit, 8-PDIP through-hole package operational amplifier designed for general-purpose signal conditioning and amplification applications. The TLE2141AIP operates across a wide supply voltage range of 4V to 44V and maintains performance across the industrial temperature range of -40°C to 105°C.

The TLE2141AIP is currently designated as Last Time Buy status, indicating that Texas Instruments has discontinued or will discontinue production. This necessitates identification of equivalent and substitute parts to ensure design continuity and long-term component availability for new designs and production requirements.

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	175	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 Range	-40 to 105	°C
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TLE2141AIP is determined by the following critical parameters:

Package Compatibility: The TLE2141AIP uses an 8-PDIP through-hole package. Direct pin-compatible substitutes must maintain this package format or provide equivalent pinout in alternative packages (such as 8-SOIC for surface-mount applications).

Electrical Performance Envelope: Substitute parts must operate within the specified supply voltage range (4V to 44V minimum) and maintain functional performance across the industrial temperature range (-40°C to 105°C). The slew rate (45V/µs) and gain bandwidth product (5.9 MHz) define the dynamic performance characteristics.

Input Characteristics: The input bias current (700 nA) and input offset voltage (175 µV) establish the precision and noise performance baseline. Substitutes with lower input bias current (such as J-FET input amplifiers) represent functional improvements but remain compatible.

Output Drive Capability: The output current specification (50 mA per channel) must be met or exceeded by substitute parts.

Substitutes are grouped into two categories:

Direct Package Substitutes (8-PDIP Through-Hole): Parts maintaining identical package format and pinout.
Functional Equivalents (Alternative Packages): Parts with identical electrical performance but different package types, suitable for design modifications or new implementations.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Range (V)	Temp Range (°C)	Package	Status
TLE2141AIP	Texas Instruments	General Purpose	45	5.9	700 nA	175	3.5	50	4–44	-40 to 105	8-DIP	Last Time Buy
TLE2141AIDR	Texas Instruments	General Purpose	45	5.9	700 nA	175	3.5	50	4–44	-40 to 105	8-SOIC	Active
AD711JNZ	Analog Devices Inc.	J-FET	20	4	15 pA	300	2.5	25	9–36	0 to 70	8-DIP	Active
AD711KNZ	Analog Devices Inc.	J-FET	20	4	15 pA	200	2.5	25	9–36	0 to 70	8-DIP	Active
LT1022CN8#PBF	Analog Devices Inc.	J-FET	24	8	30 pA	100	7	—	20–36	0 to 70	8-DIP	Active
LT1055CN8#PBF	Analog Devices Inc.	J-FET	12	4.5	30 pA	120	2.8	—	10–36	0 to 70	8-DIP	Active
LT1056CN8#PBF	Analog Devices Inc.	J-FET	14	5.5	30 pA	140	5	—	10–36	0 to 70	8-DIP	Active
LT1792CN8#PBF	Analog Devices Inc.	J-FET	3.4	5.6	300 pA	200	4.2	—	9–40	0 to 70	8-DIP	Active
LT1792IN8#PBF	Analog Devices Inc.	J-FET	3.4	5.6	300 pA	200	4.2	—	9–40	-40 to 85	8-DIP	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2141AIDR

The TLE2141AIDR is the manufacturer-recommended direct functional equivalent of the TLE2141AIP. Both parts share identical electrical specifications, including slew rate (45V/µs), gain bandwidth product (5.9 MHz), input bias current (700 nA), and supply voltage range (4V to 44V). The TLE2141AIDR maintains the same operating temperature range (-40°C to 105°C) and is manufactured by Texas Instruments under the same Excalibur™ series designation.

The primary difference is packaging: TLE2141AIDR uses 8-SOIC surface-mount format instead of 8-DIP through-hole. This substitution is appropriate for new designs or production runs where surface-mount assembly is available. Both parts carry ROHS3 compliance and identical REACH/ECCN classifications.

Secondary Recommendations: Analog Devices J-FET Input Amplifiers

For applications where the TLE2141AIP cannot be directly replaced due to supply constraints, the following Analog Devices parts provide functional alternatives:

LT1792IN8#PBF: Offers extended industrial temperature range (-40°C to 85°C), matching the TLE2141AIP temperature envelope. Gain bandwidth product (5.6 MHz) closely matches the TLE2141AIP (5.9 MHz). Supply voltage range (9V to 40V) overlaps the TLE2141AIP range. J-FET input architecture provides significantly lower input bias current (300 pA versus 700 nA), beneficial for high-impedance signal sources. Product status is Active with full availability.
LT1056CN8#PBF: Provides gain bandwidth product (5.5 MHz) comparable to TLE2141AIP. J-FET input design reduces input bias current to 30 pA. Supply range (10V to 36V) is compatible with most TLE2141AIP applications. Operating temperature range (0°C to 70°C) is narrower than TLE2141AIP but suitable for commercial/industrial environments.

Compatibility Constraints:

All substitute parts listed maintain 8-DIP through-hole package compatibility with TLE2141AIP PCB layouts. However, J-FET input substitutes (AD711, LT1022, LT1055, LT1056, LT1792 series) operate with reduced supply voltage minimums (9V to 20V versus 4V for TLE2141AIP). Applications requiring operation below 9V supply voltage cannot use these J-FET alternatives.

All recommended substitutes carry ROHS3 compliance and are classified as REACH Unaffected, maintaining regulatory equivalence with the original TLE2141AIP.

Frequently Asked Questions (FAQ)

Q: Can I use TLE2141AIDR as a direct replacement for TLE2141AIP in existing designs?

A: TLE2141AIDR provides identical electrical performance and pinout compatibility. The primary difference is package format: TLE2141AIDR uses 8-SOIC surface-mount packaging while TLE2141AIP uses 8-DIP through-hole. Direct PCB substitution is not possible without layout modification. TLE2141AIDR is suitable for new designs or redesigned PCBs with surface-mount assembly capability.

Q: What is the minimum supply voltage for J-FET input substitutes?

A: J-FET input amplifiers (AD711, LT1022, LT1055, LT1056, LT1792 series) require minimum supply voltages between 9V and 20V. The TLE2141AIP operates from 4V minimum. Applications requiring operation below 9V supply voltage must use TLE2141AIDR or equivalent general-purpose amplifiers, not J-FET alternatives.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the TLE2141AIP regulatory status. All parts are classified as REACH Unaffected.

Q: What is the temperature range difference between TLE2141AIP and substitute parts?

A: TLE2141AIP operates across -40°C to 105°C (industrial range). Most Analog Devices substitutes operate 0°C to 70°C (commercial range). LT1792IN8#PBF extends to -40°C to 85°C, providing partial industrial temperature coverage. Application requirements determine whether narrower temperature ranges are acceptable.

Q: How do J-FET input amplifiers differ from the general-purpose TLE2141AIP?

A: J-FET input amplifiers feature dramatically lower input bias current (15 pA to 300 pA versus 700 nA for TLE2141AIP). This characteristic benefits high-impedance signal sources and precision measurement circuits. However, J-FET parts typically exhibit higher input offset voltage and narrower supply voltage ranges. Slew rate performance is generally lower in J-FET designs.

Q: Can I substitute multiple different part numbers in the same production run?

A: No. Each substitute part has distinct electrical characteristics. Production runs must use a single part number to ensure consistent circuit performance and compliance with design specifications. Mixing different amplifier types (general-purpose versus J-FET) in the same assembly is not recommended.

Q: What inventory status should I consider for long-term supply?

A: TLE2141AIP is Last Time Buy status, indicating limited remaining inventory. TLE2141AIDR (Active status, 1472 pcs in stock) is the recommended long-term replacement. Analog Devices J-FET alternatives all carry Active status with substantial inventory levels (697 to 2903 pcs), ensuring sustained availability for extended production requirements.

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