TLE2021AQDREP Equivalent & Substitute Parts

Part Overview

The TLE2021AQDREP is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is part of the Excalibur™ series and is designated as Last Time Buy, indicating discontinued production with limited inventory availability. The TLE2021AQDREP contains a single amplifier circuit suitable for general-purpose analog signal processing applications across industrial and commercial temperature ranges.

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the TLE2021AQDREP. Organizations requiring long-term component availability or higher inventory levels must evaluate active alternative products that maintain electrical and mechanical compatibility.

Substiute Parts

TLE2021AQDREP

Texas InstrumentsIn Stock: 763TLE2021AQDREP Datasheet

Current PartRFQ

TLE2021AIDR

Texas InstrumentsIn Stock: 1340TLE2021AIDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE2021AQDREP is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Package / Case: 8-SOIC (0.154", 3.90 mm Width)
• Mounting Type: Surface Mount
• Slew Rate: 0.65 V/µs
• Gain Bandwidth Product: 1.7 MHz
• Current - Input Bias: 25 nA
• Voltage - Input Offset: 80 µV
• Current - Output / Channel: 20 mA
• Voltage - Supply Span (Min): 4 V
• Voltage - Supply Span (Max): 40 V
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The TLE2021AIDR is identified as the manufacturer-recommended substitute. This part maintains identical electrical performance specifications and mechanical compatibility while offering Active product status and higher current inventory availability.

Parameter Comparison

Engineering Selection Recommendations

TLE2021AIDR as Primary Substitute:

The TLE2021AIDR is the direct equivalent for the TLE2021AQDREP based on electrical and mechanical parameter alignment. Selection of the TLE2021AIDR is supported by the following factors:

1. Product Status: The TLE2021AIDR maintains Active product status, ensuring continued manufacturing support and long-term availability, contrasting with the Last Time Buy designation of the TLE2021AQDREP.

2. Electrical Equivalence: All critical electrical parameters are identical, including slew rate (0.65 V/µs), gain bandwidth product (1.7 MHz), input bias current (25 nA), input offset voltage (80 µV), and output current capability (20 mA per channel).

3. Mechanical Compatibility: Both parts utilize identical 8-SOIC surface mount packaging (0.154", 3.90 mm width), enabling direct PCB layout compatibility without redesign.

4. Supply Voltage Range: Both parts operate across the full 4 V to 40 V supply span, maintaining compatibility with existing power distribution architectures.

5. Compliance Certifications: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting regulatory and environmental requirements.

6. Temperature Operating Range Consideration: The TLE2021AQDREP operates to +125°C, while the TLE2021AIDR operates to +85°C. Applications requiring operation above +85°C must retain the TLE2021AQDREP or evaluate alternative parts with extended temperature specifications.

7. Supply Current Variance: The TLE2021AIDR exhibits 240 µA supply current versus 200 µA for the TLE2021AQDREP. This 40 µA difference is within typical operational margins for general-purpose amplifier applications and does not constitute a functional limitation.

Frequently Asked Questions (FAQ)

Q: Can the TLE2021AIDR directly replace the TLE2021AQDREP on existing PCBs?

A: Yes. Both parts share identical 8-SOIC surface mount packaging dimensions and pinout. No PCB layout modifications are required for mechanical or electrical substitution.

Q: What is the primary difference between these two parts?

A: The TLE2021AQDREP is Last Time Buy with limited inventory (708 pcs), while the TLE2021AIDR is Active production with higher availability (1314 pcs). The TLE2021AQDREP supports operation to +125°C; the TLE2021AIDR supports operation to +85°C. Supply current differs by 40 µA (200 µA vs. 240 µA).

Q: Are there applications where the TLE2021AQDREP cannot be substituted?

A: Applications requiring sustained operation above +85°C must use the TLE2021AQDREP or identify alternative parts with extended temperature ratings. The TLE2021AIDR is not suitable for such applications.

Q: Do both parts meet RoHS and REACH compliance requirements?

A: Yes. Both the TLE2021AQDREP and TLE2021AIDR are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can supply current difference (200 µA vs. 240 µA) affect circuit performance?

A: The 40 µA difference represents a 20% variance in quiescent supply current. For general-purpose amplifier applications, this difference does not alter functional performance or signal characteristics. Power budget calculations should account for this variance in systems with strict power consumption limits.