TLE2021MDG4 Equivalent & Substitute Parts

Part Overview

The TLE2021MDG4 is a general-purpose operational amplifier manufactured by Texas Instruments, part of the Excalibur™ series. This device integrates a single amplifier circuit in an 8-SOIC surface-mount package and is designed for applications requiring low-power, general-purpose amplification with a gain-bandwidth product of 2 MHz.

The TLE2021MDG4 carries a Last Time Buy product status, indicating that this specific packaging configuration (Tube) is being discontinued. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term component availability.

Substiute Parts

TLE2021MDG4

Texas InstrumentsIn Stock: 811TLE2021MDG4 Datasheet

Current PartRFQ

TLE2021IDR

Texas InstrumentsIn Stock: 7662TLE2021IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE2021MDG4 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Amplifier type (General Purpose)
• Number of circuits (1)
• Slew rate (0.65 V/µs)
• Gain bandwidth product (2 MHz)
• Input bias current (25 nA)
• Input offset voltage (120 µV)
• Supply current (200–240 µA range)
• Output current per channel (20 mA)
• Supply voltage span (4 V to 40 V)

Mechanical Compatibility Criteria:

• Package type (8-SOIC)
• Physical dimensions (0.154", 3.90 mm width)
• Surface-mount mounting type

Compliance & Regulatory Criteria:

• RoHS3 compliance
• REACH unaffected status
• MSL rating (1 - Unlimited)

The TLE2021IDR is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications and package geometry while differing in product status (Active vs. Last Time Buy) and operating temperature range. The TLE2021IDR is available in Cut Tape and Digi-Reel® packaging formats, providing improved supply chain availability compared to the tube-packaged TLE2021MDG4.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLE2021IDR

The TLE2021IDR is the manufacturer-recommended equivalent for the TLE2021MDG4. Both parts share identical electrical specifications, package geometry, and regulatory compliance status. The TLE2021IDR is designated as an Active product with significantly higher inventory availability (7,600 pieces in stock versus 799 pieces for the TLE2021MDG4).

Key Differentiation:

The primary distinction between these parts is the operating temperature range. The TLE2021MDG4 supports extended temperature operation from −55°C to 125°C, while the TLE2021IDR operates from −40°C to 85°C. Applications requiring operation below −40°C or above 85°C must retain the TLE2021MDG4 or identify alternative solutions outside the TLE2021 base product family.

For applications operating within the −40°C to 85°C range, the TLE2021IDR provides equivalent electrical performance with improved supply chain continuity. The TLE2021IDR is available in Cut Tape and Digi-Reel® packaging formats, offering flexibility for both high-volume production and component-level procurement.

Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the TLE2021IDR directly replace the TLE2021MDG4 in all applications?

A: The TLE2021IDR provides direct electrical and mechanical substitution for applications operating within the −40°C to 85°C temperature range. Applications requiring operation below −40°C or above 85°C must use the TLE2021MDG4 or identify alternative components. All other electrical parameters, package dimensions, and compliance certifications are identical.

Q: What is the difference between Tube and Cut Tape packaging?

A: Tube packaging (TLE2021MDG4) is typically used for lower-volume orders and manual assembly processes. Cut Tape and Digi-Reel® packaging (TLE2021IDR) are standard for automated pick-and-place assembly and high-volume production. Both packaging formats contain the same die and electrical specifications; the difference is in component presentation and handling method.

Q: Are there any supply current differences between these parts?

A: The TLE2021IDR specifies a maximum supply current of 240 µA, compared to 200 µA for the TLE2021MDG4. This 40 µA difference falls within typical operational variation and does not affect circuit design or performance in standard applications. Power supply designs should accommodate the higher specification of 240 µA.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the TLE2021MDG4 and TLE2021IDR are ROHS3 compliant, REACH unaffected, and carry an MSL rating of 1 (Unlimited). Both parts share identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications.

Q: Why is the TLE2021MDG4 marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments is discontinuing this specific packaging configuration (Tube). The TLE2021IDR, available in Cut Tape and Digi-Reel® formats, represents the active product line continuation. Designers should transition to the TLE2021IDR for new designs to ensure long-term component availability.

Q: Can I use the TLE2021IDR in a design originally specified for the TLE2021MDG4?

A: Yes, provided the application operates within the −40°C to 85°C temperature range. The electrical specifications, pin configuration, and package footprint are identical. PCB layouts and circuit designs require no modification. Verify that your operating temperature requirements fall within the TLE2021IDR specification before implementation.