TLE2021MD Equivalent & Substitute Parts

Part Overview

The TLE2021MD is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a Last Time Buy product, indicating discontinued production with limited inventory availability. The TLE2021MD belongs to the Excalibur™ series and is designed for applications requiring low-power, general-purpose amplification with moderate bandwidth characteristics.

Due to Last Time Buy status, identifying equivalent substitute parts is essential for design continuity and long-term supply chain planning. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

TLE2021MD

Texas InstrumentsIn Stock: 100241TLE2021MD Datasheet

Current PartRFQ

TLE2021IDR

Texas InstrumentsIn Stock: 7662TLE2021IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE2021MD is determined by strict alignment of electrical and mechanical parameters. The primary substitute identified is the TLE2021IDR, also manufactured by Texas Instruments within the same Excalibur™ series.

Substitution Criteria:

The TLE2021IDR qualifies as a direct substitute based on the following parameter alignment:

• Identical amplifier type (General Purpose)
• Identical number of circuits (1)
• Identical slew rate (0.65 V/µs)
• Identical gain bandwidth product (2 MHz)
• Identical input bias current (25 nA)
• Identical input offset voltage (120 µV)
• Identical output current per channel (20 mA)
• Identical supply voltage span (4 to 40 V)
• Identical package and case (8-SOIC, 0.154", 3.90mm Width)
• Identical mounting type (Surface Mount)
• Identical RoHS and MSL compliance

Notable Differences:

The TLE2021IDR exhibits a slightly elevated supply current (240 µA versus 200 µA) and operates within a narrower temperature range (−40°C to 85°C versus −55°C to 125°C). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLE2021IDR

The TLE2021IDR is the recommended substitute for the TLE2021MD based on electrical and mechanical parameter equivalence. Both devices are manufactured by Texas Instruments and comply with ROHS3 and REACH requirements.

Selection Considerations:

1. Supply Current Differential: The TLE2021IDR operates at 240 µA compared to the TLE2021MD at 200 µA. Applications with strict power budget constraints must account for this 40 µA increase in quiescent current consumption.

2. Temperature Range Limitation: The TLE2021IDR operates within −40°C to 85°C, whereas the TLE2021MD extends to −55°C to 125°C. Applications requiring operation below −40°C or above 85°C cannot use the TLE2021IDR as a substitute.

3. Product Status: The TLE2021MD is Last Time Buy with limited inventory (100,198 pcs). The TLE2021IDR is Active with current production (7,600 pcs available), providing superior long-term supply availability.

4. Packaging: Both devices are supplied in 8-SOIC surface mount packages with identical footprints, enabling direct PCB layout compatibility.

5. Compliance: Both parts maintain identical RoHS3 compliance and MSL Level 1 ratings, suitable for standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the TLE2021IDR directly replace the TLE2021MD in all applications?

A: Direct replacement is possible only when the application operates within the TLE2021IDR temperature range (−40°C to 85°C) and can tolerate the increased supply current of 240 µA. Applications requiring extended temperature operation (−55°C to 125°C) or strict power minimization cannot use this substitute.

Q: What is the significance of the Last Time Buy status for the TLE2021MD?

A: Last Time Buy indicates that Texas Instruments has discontinued production of the TLE2021MD. Existing inventory is limited to 100,198 pieces. Once depleted, the part will no longer be available from the manufacturer. The TLE2021IDR, with Active status, represents the recommended path for future designs.

Q: Are the PCB footprints identical between TLE2021MD and TLE2021IDR?

A: Yes. Both devices use the 8-SOIC package with dimensions of 0.154" (3.90mm) width. PCB layouts designed for the TLE2021MD require no modification to accommodate the TLE2021IDR.

Q: What is the impact of the 40 µA supply current increase?

A: In battery-powered or low-power applications, the increase from 200 µA to 240 µA represents a 20% rise in quiescent current. For applications operating at higher supply currents or in AC-coupled configurations, this difference is typically negligible. System-level power analysis is required for power-critical designs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TLE2021MD and TLE2021IDR are ROHS3 Compliant, REACH Unaffected, and classified as MSL Level 1 (Unlimited moisture sensitivity). Both carry the same ECCN (EAR99) and HTSUS (8542.33.0001) classifications.

Q: What packaging options are available for the TLE2021IDR?

A: The TLE2021IDR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated reel-fed production environments.