TLC2274MDREP Equivalent & Substitute Parts

Part Overview

The TLC2274MDREP is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device delivers rail-to-rail output capability with a supply voltage range of 4.4V to 16V and operates across the industrial temperature range of -55°C to 125°C. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters, particularly when the primary part faces inventory constraints or when alternative sourcing is required for supply chain continuity.

Substiute Parts

TLC2274MDREP

Texas InstrumentsIn Stock: 5286TLC2274MDREP Datasheet

Current PartRFQ

AD8668ARZ

Analog Devices Inc.In Stock: 2283AD8668ARZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC2274MDREP is determined by strict adherence to the following critical parameters:

Mechanical Compatibility:

• Package type must be 14-SOIC with identical 0.154" (3.90mm) width
• Surface-mount configuration required
• Pin count and pinout must match the base product number family

Electrical Compatibility:

• Four independent operational amplifier circuits
• Rail-to-rail output capability
• Supply voltage range must encompass or exceed 4.4V to 16V minimum specification
• Operating temperature range must cover or exceed -55°C to 125°C minimum specification

Regulatory & Compliance:

• RoHS3 compliance required
• MSL 1 (Unlimited) moisture sensitivity level
• Active product status

The AD8668ARZ meets all mechanical compatibility requirements and maintains functional equivalence within the specified electrical parameters. Both devices share identical package geometry, circuit count, and output characteristics, enabling direct substitution in applications where the electrical performance envelope is compatible.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: TLC2274MDREP

The TLC2274MDREP remains the specified component for applications requiring the exact electrical characteristics defined in the original design. This device is Active status with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory compliance. Current inventory of 5197 units supports immediate procurement.

Substitute Part: AD8668ARZ

The AD8668ARZ (Analog Devices Inc.) is qualified as an equivalent substitute based on the following criteria:

• Identical mechanical compatibility: 14-SOIC package with 0.154" (3.90mm) width
• Functional equivalence: Four rail-to-rail operational amplifier circuits
• Supply voltage compatibility: 5V to 16V range encompasses the 4.4V to 16V requirement
• Active product status with RoHS3 compliance and MSL 1 rating
• Packaging format: Tube (alternative to Tape & Reel)

Substitution Constraints:

The AD8668ARZ exhibits the following parameter differences that must be evaluated against application requirements:

• Operating temperature minimum: -40°C (versus -55°C for TLC2274MDREP). Applications requiring operation below -40°C require the primary part.
• Gain bandwidth product: 4 MHz (higher than 2.25 MHz primary part). Applications sensitive to bandwidth characteristics must verify compatibility.
• Input bias current: 0.2 pA (lower than 1 pA primary part). High-impedance input applications may benefit from this characteristic.
• Supply current: 1.15 mA per four channels (lower than 4.8 mA primary part). Power-constrained applications may benefit from reduced quiescent current.
• Output current per channel: 140 mA (higher than 50 mA primary part). Applications requiring higher output drive capability are supported.

Both devices maintain Active product status and full regulatory compliance (RoHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can the AD8668ARZ be used as a direct replacement for the TLC2274MDREP in all applications?

A: Direct substitution is mechanically and functionally possible due to identical package geometry and circuit configuration. However, application-specific evaluation is required for the following conditions: (1) Operating temperature below -40°C requires the TLC2274MDREP; (2) Applications with bandwidth-critical specifications must verify compatibility with the 4 MHz gain-bandwidth product of the AD8668ARZ; (3) High-impedance input circuits may benefit from the lower input bias current of the AD8668ARZ.

Q: What are the package differences between the two parts?

A: Both devices use the 14-SOIC (0.154", 3.90mm width) surface-mount package with identical pinout and mechanical dimensions. The primary difference is packaging format: TLC2274MDREP is supplied in Tape & Reel (TR) format, while AD8668ARZ is supplied in Tube format. Both formats are compatible with standard pick-and-place assembly equipment.

Q: Are there supply voltage compatibility issues?

A: The TLC2274MDREP operates from 4.4V to 16V. The AD8668ARZ operates from 5V to 16V. Applications requiring operation at 4.4V to 4.9V supply voltage must use the TLC2274MDREP. For applications operating at 5V or higher, both devices are compatible.

Q: How do the power consumption characteristics compare?

A: The AD8668ARZ consumes 1.15 mA total supply current (four channels), compared to 4.8 mA for the TLC2274MDREP. Power-constrained applications benefit from the lower quiescent current of the AD8668ARZ. The AD8668ARZ also provides higher output current capability (140 mA per channel versus 50 mA), enabling higher load drive capability.

Q: What compliance certifications apply to both parts?

A: Both the TLC2274MDREP and AD8668ARZ are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both devices carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture sensitivity restrictions for storage and handling.

Q: Which part should be selected for new designs?

A: Component selection depends on specific application requirements. The TLC2274MDREP is specified when the full -55°C to 125°C temperature range is required. The AD8668ARZ is suitable for applications operating at -40°C to 125°C with potential benefits in power consumption and output drive capability. Both devices are Active status with equivalent long-term availability.