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TLE2081CD Equivalent & Substitute Parts
Part Overview
The TLE2081CD is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is a single-circuit, 8-SOIC surface mount integrated circuit designed for applications requiring low input bias current and high input impedance characteristics. The TLE2081CD is currently in Last Time Buy status, indicating limited future availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications utilizing this amplifier topology.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 1 | — |
| Slew Rate | 45 | V/µs |
| Gain Bandwidth Product | 10 | MHz |
| Current - Input Bias | 20 | pA |
| Voltage - Input Offset | 490 | µV |
| Current - Supply | 1.7 | mA |
| Current - Output / Channel | 48 | mA |
| Voltage - Supply Span (Min) | 4.5 | V |
| Voltage - Supply Span (Max) | 38 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the TLE2081CD are classified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:
Critical Matching Parameters:
- Amplifier Type: J-FET input topology
- Number of Circuits: Single circuit configuration
- Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
- Mounting Type: Surface Mount
- Supply Voltage Range: Minimum 4.5V to maximum 38V operational span
- Operating Temperature Range: 0°C to 70°C minimum requirement
Substitution Categories:
Category 1: Direct Equivalent (Identical Electrical Performance) TLE2081CDR is a direct equivalent from Texas Instruments, differing only in packaging format (Cut Tape & Digi-Reel® versus Tube). All electrical parameters, supply voltage range, and operating temperature specifications are identical to the TLE2081CD.
Category 2: Enhanced Performance Substitutes (Superior Electrical Specifications) AD8610 series parts (AD8610ARZ, AD8610ARZ-REEL, AD8610ARZ-REEL7, AD8610BRZ, AD8610BRZ-REEL, AD8610BRZ-REEL7) from Analog Devices Inc. provide enhanced electrical performance while maintaining J-FET input topology and 8-SOIC packaging. These devices feature higher slew rate (60V/µs versus 45V/µs), higher gain bandwidth product (25MHz versus 10MHz), lower input bias current (3pA versus 20pA), and lower input offset voltage (45-85µV versus 490µV). However, these parts require a minimum supply voltage of 10V and maximum of 26V, and operate across an extended temperature range of -40°C to 125°C.
Category 3: Alternative Topology Substitutes (Different Amplifier Type) LT1008S8#PBF and LT1008S8#TRPBF are general-purpose amplifiers with different input topology and reduced performance specifications. LT1055S8#PBF is a J-FET amplifier with lower bandwidth and slew rate characteristics.
Parameter Comparison
| Parameter | TLE2081CD | TLE2081CDR | AD8610ARZ | AD8610BRZ | LT1055S8#PBF |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | J-FET | J-FET | J-FET | J-FET | J-FET |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 45 | 45 | 60 | 60 | 12 |
| Gain Bandwidth Product (MHz) | 10 | 10 | 25 | 25 | 4.5 |
| Current - Input Bias (pA) | 20 | 20 | 3 | 3 | 30 |
| Voltage - Input Offset (µV) | 490 | 490 | 85 | 45 | 500 |
| Current - Supply (mA) | 1.7 | 1.7 | 3 | 3 | 2.8 |
| Current - Output / Channel (mA) | 48 | 48 | 45 | 45 | — |
| Voltage - Supply Span Min (V) | 4.5 | 4.5 | 10 | 10 | 10 |
| Voltage - Supply Span Max (V) | 38 | 38 | 26 | 26 | 36 |
| Operating Temperature (°C) | 0 to 70 | 0 to 70 | -40 to 125 | -40 to 125 | 0 to 70 |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Last Time Buy | Active | Active | Active | Active |
Engineering Selection Recommendations
For Direct Replacement (No Design Changes Required): TLE2081CDR is the primary direct substitute for TLE2081CD. This part maintains identical electrical specifications and operating parameters while offering Active product status and improved long-term availability. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). Selection of TLE2081CDR is appropriate when supply continuity is the primary concern and existing circuit designs require no modification.
For Enhanced Performance Applications: AD8610 series parts (specifically AD8610ARZ, AD8610ARZ-REEL, AD8610ARZ-REEL7, AD8610BRZ, AD8610BRZ-REEL, AD8610BRZ-REEL7) are suitable substitutes when circuit designs can accommodate enhanced electrical performance. These parts offer superior slew rate, gain bandwidth product, input bias current, and input offset voltage specifications. Selection of AD8610 variants requires verification that the reduced supply voltage range (10V to 26V maximum versus 4.5V to 38V) is compatible with the application's power supply architecture. Extended operating temperature range (-40°C to 125°C) provides additional environmental margin.
Compliance and Certification: All substitute parts listed maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, matching the regulatory profile of the TLE2081CD. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.
Inventory Availability: TLE2081CDR: 1983 Pcs in stock AD8610ARZ: 2100 Pcs in stock AD8610ARZ-REEL: 50400 Pcs in stock AD8610ARZ-REEL7: 3525 Pcs in stock AD8610BRZ: 2200 Pcs in stock AD8610BRZ-REEL: 2000 Pcs in stock AD8610BRZ-REEL7: 2040 Pcs in stock
Frequently Asked Questions (FAQ)
Q: Can TLE2081CDR be used as a direct drop-in replacement for TLE2081CD? A: Yes. TLE2081CDR is electrically and functionally identical to TLE2081CD. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). Both parts are compatible with identical PCB layouts and circuit designs.
Q: What are the key differences between TLE2081CD and AD8610 series parts? A: AD8610 series parts offer enhanced electrical performance with higher slew rate (60V/µs versus 45V/µs), higher gain bandwidth product (25MHz versus 10MHz), lower input bias current (3pA versus 20pA), and lower input offset voltage (45-85µV versus 490µV). However, AD8610 parts require a minimum supply voltage of 10V (versus 4.5V for TLE2081CD) and maximum supply voltage of 26V (versus 38V for TLE2081CD). Circuit designs operating at supply voltages below 10V or above 26V cannot use AD8610 substitutes.
Q: Are AD8610 parts suitable for low-voltage applications below 10V? A: No. AD8610 series parts require a minimum supply voltage of 10V. Applications requiring operation at supply voltages between 4.5V and 10V must use TLE2081CD or TLE2081CDR.
Q: What is the difference between AD8610ARZ and AD8610BRZ variants? A: Both variants are J-FET amplifiers with identical electrical specifications except for input offset voltage. AD8610ARZ has input offset voltage of 85µV, while AD8610BRZ has input offset voltage of 45µV. Both are available in multiple packaging formats (Tube, Cut Tape & Digi-Reel®, and Digi-Reel7).
Q: Can LT1008S8 or LT1055S8 be used as substitutes for TLE2081CD? A: LT1008S8 and LT1055S8 are not direct substitutes. LT1008S8 is a general-purpose amplifier with different input topology and significantly reduced performance specifications. LT1055S8 is a J-FET amplifier but with lower slew rate (12V/µs versus 45V/µs) and lower gain bandwidth product (4.5MHz versus 10MHz). These parts are suitable only for applications with reduced performance requirements.
Q: What is the significance of the 8-SOIC package specification? A: The 8-SOIC (Small Outline Integrated Circuit) package with 0.154" (3.90mm) width is a standard surface mount package. All substitute parts listed maintain this identical package specification, ensuring compatibility with existing PCB layouts and assembly processes. Package compatibility is a critical substitution criterion.
Q: Does TLE2081CD have extended temperature range variants? A: The TLE2081CD operates across 0°C to 70°C. AD8610 series parts offer extended temperature range operation from -40°C to 125°C, providing additional environmental margin for applications requiring wider temperature specifications.
Q: What is the product status significance for long-term supply planning? A: TLE2081CD is in Last Time Buy status, indicating limited future availability. TLE2081CDR and all AD8610 variants are in Active status, indicating ongoing production and long-term availability. For new designs or long-term supply requirements, Active status parts are recommended.
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