TLE2141CP Equivalent & Substitute Parts Reference

Part Overview

The TLE2141CP is a general-purpose operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This single-circuit, 8-PDIP through-hole device operates across a wide supply voltage range of 4V to 44V and is designed for general-purpose amplification applications. The TLE2141CP is currently in Last Time Buy status, indicating limited availability. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements for applications utilizing this amplifier topology.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TLE2141CP	—
Manufacturer	Texas Instruments	—
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
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the TLE2141CP is based on the following critical parameters that must be maintained or exceeded in equivalent designs:

Primary Substitution Criteria:

Amplifier Type & Circuit Count: General-purpose single-circuit topology
Package Compatibility: 8-DIP through-hole form factor (0.300", 7.62mm)
Supply Voltage Range: Minimum 4V to maximum 44V operation
Slew Rate: 45V/µs or higher
Gain Bandwidth Product: 5.9 MHz or higher
Input Bias Current: 700 nA or lower
Input Offset Voltage: 200 µV or lower
Output Current: 50 mA or higher per channel
Operating Temperature: 0°C to 70°C minimum coverage
Compliance: ROHS3 compliant, REACH unaffected

Substitutes are grouped into two categories:

Category 1 - Direct Manufacturer Equivalent (Same Base Product): TLE2141CDR represents the surface-mount variant of the same base product (TLE2141) with identical electrical specifications but different packaging (8-SOIC). This part maintains all electrical parameters and is suitable for designs transitioning to surface-mount assembly.

Category 2 - Cross-Manufacturer Alternatives (Different Amplifier Type): Parts from Analog Devices Inc. (AD711KNZ, LT1055CN8#PBF, LT1056CN8#PBF, LT1792 series) offer J-FET input topology alternatives. These parts meet or exceed the critical electrical parameters within the 8-DIP through-hole package format and maintain the required supply voltage range and operating temperature specifications.

Parameter Comparison

Parameter	TLE2141CP	TLE2141CDR	AD711KNZ	LT1055CN8#PBF	LT1056CN8#PBF	LT1792ACN8#PBF	LT1792AIN8#PBF	LT1792CN8#PBF	LT1792IN8#PBF
Manufacturer	TI	TI	ADI	ADI	ADI	ADI	ADI	ADI	ADI
Amplifier Type	General Purpose	General Purpose	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET	J-FET
Package	8-DIP	8-SOIC	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Slew Rate (V/µs)	45	45	20	12	14	3.4	3.4	3.4	3.4
GBW (MHz)	5.9	5.9	4	4.5	5.5	5.6	5.6	5.6	5.6
Input Bias Current (nA)	700	700	15	30	30	300	300	300	300
Input Offset Voltage (µV)	200	200	200	120	140	200	200	200	200
Supply Current (mA)	3.5	3.5	2.5	2.8	5	4.2	4.2	4.2	4.2
Output Current (mA)	50	50	25	—	—	—	—	—	—
Supply Voltage Min (V)	4	4	9	10	10	9	9	9	9
Supply Voltage Max (V)	44	44	36	36	36	40	40	40	40
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	0 to 70	-40 to 85
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance):

TLE2141CDR is the manufacturer-recommended equivalent from Texas Instruments. It maintains identical electrical specifications (45V/µs slew rate, 5.9 MHz gain-bandwidth product, 700 nA input bias current) and is in Active product status. The primary difference is packaging: TLE2141CDR uses 8-SOIC surface-mount format instead of 8-DIP through-hole. This part is suitable only for designs that can accommodate surface-mount assembly or for new designs transitioning to SMT technology.

For Through-Hole Package Continuity:

When 8-DIP through-hole mounting is required and TLE2141CP availability is exhausted, the following alternatives maintain through-hole compatibility:

AD711KNZ (Analog Devices): Offers superior input bias current performance (15 pA vs. 700 nA) with J-FET input topology. However, slew rate is reduced to 20V/µs, and supply voltage minimum is 9V (vs. 4V for TLE2141CP). Output current is limited to 25 mA. Suitable for low-bias-current applications where the reduced slew rate and higher minimum supply voltage are acceptable.
LT1055CN8#PBF and LT1056CN8#PBF (Analog Devices): J-FET input alternatives with reduced slew rates (12V/µs and 14V/µs respectively) and higher minimum supply voltages (10V). These parts are suitable for applications prioritizing low input bias current over high-speed performance.
LT1792 Series (Analog Devices): LT1792ACN8#PBF, LT1792AIN8#PBF, LT1792CN8#PBF, and LT1792IN8#PBF offer J-FET input topology with 5.6 MHz gain-bandwidth product matching the TLE2141CP. All variants maintain 9V to 40V supply range and 0°C to 70°C operating temperature (except AIN and IN variants which extend to -40°C to 85°C). Slew rate is significantly reduced to 3.4V/µs. These parts are suitable for applications where input bias current reduction is prioritized and slew rate requirements are moderate.

Compliance Verification:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the TLE2141CP regulatory requirements. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Frequently Asked Questions (FAQ)

Q1: Can TLE2141CDR be used as a direct replacement for TLE2141CP in existing PCB designs?

A: No. TLE2141CDR uses 8-SOIC surface-mount packaging, while TLE2141CP uses 8-DIP through-hole packaging. These packages are physically incompatible with existing through-hole PCB layouts. TLE2141CDR requires PCB redesign for surface-mount assembly. For through-hole designs, select alternatives from the LT1792 series or AD711KNZ.

Q2: What is the primary difference between TLE2141CP and the Analog Devices J-FET alternatives?

A: The TLE2141CP uses a general-purpose bipolar input stage, while AD711KNZ and the LT1792 series use J-FET input stages. J-FET inputs provide significantly lower input bias current (15 pA to 300 pA vs. 700 nA), making them superior for high-impedance signal sources. However, J-FET alternatives typically have lower slew rates and higher minimum supply voltages. Select based on your application's bias current and slew rate requirements.

Q3: Which substitute part is best for applications requiring the lowest input bias current?

A: AD711KNZ offers the lowest input bias current at 15 pA. However, verify that your application can tolerate its 20V/µs slew rate (vs. 45V/µs for TLE2141CP) and 9V minimum supply voltage (vs. 4V for TLE2141CP).

Q4: Are the LT1792AIN8#PBF and LT1792IN8#PBF suitable for extended temperature range applications?

A: Yes. LT1792AIN8#PBF and LT1792IN8#PBF both operate across -40°C to 85°C, compared to the TLE2141CP's 0°C to 70°C range. The other LT1792 variants (ACN8 and CN8) are limited to 0°C to 70°C. Select the extended-temperature variants only if your application requires operation below 0°C or above 70°C.

Q5: What is the impact of reduced slew rate in J-FET alternatives on circuit performance?

A: Slew rate determines the maximum rate of output voltage change. The TLE2141CP's 45V/µs slew rate supports faster signal transitions than J-FET alternatives (3.4V/µs to 20V/µs). For high-frequency or fast-transient applications, reduced slew rate may limit bandwidth or introduce distortion. Verify slew rate requirements in your specific application before substitution.

Q6: Can I use LT1055CN8#PBF or LT1056CN8#PBF in place of TLE2141CP?

A: These parts are compatible in 8-DIP through-hole format and maintain the 0°C to 70°C operating range. However, both require minimum 10V supply (vs. 4V for TLE2141CP) and have reduced slew rates (12V/µs and 14V/µs respectively). Use only if your circuit supplies 10V or higher and slew rate requirements are moderate.

Q7: What inventory status should I consider when selecting a substitute?

A: TLE2141CP is in Last Time Buy status with 3,473 units available. TLE2141CDR (Active status, 4,048 units) is the manufacturer-recommended equivalent but requires packaging change. All Analog Devices alternatives are in Active status with inventory ranging from 697 to 2,270 units, providing long-term supply security.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed—TLE2141CDR, AD711KNZ, LT1055CN8#PBF, LT1056CN8#PBF, and all LT1792 variants—are ROHS3 compliant and REACH unaffected, matching TLE2141CP regulatory requirements.

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