TLC274CDB Equivalent & Substitute Parts

Part Overview

The TLC274CDB is a general-purpose operational amplifier integrated circuit containing four independent amplifier circuits in a 14-SSOP surface mount package. Manufactured by Texas Instruments, this device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory (1578 pcs). The TLC274CDB operates across a wide supply voltage range of 3V to 16V and is suitable for applications requiring low-power, general-purpose amplification in compact form factors.

Identifying equivalent and substitute parts is necessary due to the Last Time Buy status of the TLC274CDB. Design engineers and procurement specialists require alternative components that maintain electrical compatibility while offering improved availability and product lifecycle status.

Substiute Parts

TLC274CDB

Texas InstrumentsIn Stock: 1625TLC274CDB Datasheet

Current PartRFQ

TLC274CDR

Texas InstrumentsIn Stock: 25224TLC274CDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC274CDB is determined by strict electrical and mechanical compatibility criteria. The following parameters must remain constant across all substitute parts:

Electrical Compatibility Requirements:

• Amplifier Type: General Purpose
• Number of Circuits: 4 (quad configuration)
• Slew Rate: 3.6 V/µs
• Gain Bandwidth Product: 2.2 MHz
• Current - Input Bias: 0.6 pA
• Voltage - Input Offset: 1.1 mV
• Current - Supply: 2.7 mA (x4 Channels)
• Current - Output per Channel: 30 mA
• Voltage - Supply Span: 3V to 16V
• Operating Temperature Range: 0°C to 70°C

Mechanical Compatibility Requirements:

• Mounting Type: Surface Mount
• Base Product Number: TLC274 (same die)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Package Variation Allowance: The TLC274 base product is available in multiple surface mount package options. Package differences (SSOP vs. SOIC) are permitted substitutions when all electrical parameters and compliance certifications remain identical. Package selection depends on PCB layout requirements and mechanical constraints specific to the application.

Parameter Comparison

Engineering Selection Recommendations

TLC274CDR as Primary Substitute:

The TLC274CDR is the manufacturer-recommended substitute for the TLC274CDB. Both components share identical electrical specifications, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range. Both devices operate across the 0°C to 70°C temperature range and maintain ROHS3 compliance with MSL Level 1 rating.

Justification for Substitution:

The TLC274CDB carries Last Time Buy status with limited inventory (1578 pcs), indicating end-of-life production. The TLC274CDR maintains Active product status with significantly higher inventory availability (25200 pcs), ensuring long-term supply chain reliability and design lifecycle support.

Package Consideration:

The primary difference between these components is the surface mount package format. The TLC274CDB uses 14-SSOP packaging (0.209" width, 5.30mm), while the TLC274CDR uses 14-SOIC packaging (0.154" width, 3.90mm). Both packages are industry-standard surface mount formats with identical pin configurations and electrical performance. Package selection depends on PCB layout constraints and available board space. The SOIC package offers a smaller footprint, while the SSOP package provides wider lead spacing.

Compliance and Certification:

Both components maintain identical regulatory compliance: ROHS3 Compliant, REACH Unaffected, and MSL Level 1 (Unlimited moisture sensitivity). No additional qualification or testing is required for substitution from a compliance perspective.

Packaging Format:

The TLC274CDB is supplied in Tube packaging, while the TLC274CDR is available in Cut Tape (CT) and Digi-Reel® formats. These packaging format differences do not affect component functionality and reflect standard distribution channel options.

Frequently Asked Questions (FAQ)

Q: Can the TLC274CDR directly replace the TLC274CDB in existing designs?

A: Electrical substitution is direct. All electrical parameters, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current specifications are identical. The primary consideration is package format: TLC274CDB uses 14-SSOP while TLC274CDR uses 14-SOIC. PCB layout modifications may be required to accommodate the different package dimensions. Both packages maintain identical pin configurations and electrical performance.

Q: What is the significance of the Last Time Buy status on the TLC274CDB?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TLC274CDB. Existing inventory is limited to 1578 pcs. This status necessitates transition to an alternative part number for new designs and long-term production requirements. The TLC274CDR, with Active product status and 25200 pcs inventory, provides continuity for ongoing applications.

Q: Are there any electrical performance differences between the TLC274CDB and TLC274CDR?

A: No. Both components are manufactured from the same die and share identical electrical specifications across all measured parameters: 3.6 V/µs slew rate, 2.2 MHz gain bandwidth product, 0.6 pA input bias current, 1.1 mV input offset voltage, 2.7 mA supply current (4 channels), 30 mA output current per channel, and 3V to 16V supply voltage range.

Q: How do the package dimensions affect component selection?

A: The TLC274CDB (14-SSOP) measures 0.209" width (5.30mm), while the TLC274CDR (14-SOIC) measures 0.154" width (3.90mm). The SOIC package is narrower and offers a smaller PCB footprint. Package selection depends on available board space and layout constraints. Both packages use identical pin spacing and electrical connections, requiring only PCB layout adjustment.

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

A: Yes. Both the TLC274CDB and TLC274CDR are ROHS3 Compliant, REACH Unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity rating. No additional compliance qualification is required for substitution.

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

A: Tube packaging (TLC274CDB) supplies components in plastic tubes, typically used for lower-volume orders and manual assembly. Cut Tape and Digi-Reel® packaging (TLC274CDR) supplies components on continuous tape, optimized for automated pick-and-place assembly and higher-volume production. Packaging format does not affect component functionality or electrical performance.

Q: Is the TLC274CDR recommended by Texas Instruments as a substitute?

A: Yes. The TLC274CDR is listed as the manufacturer-recommended substitute part number for the TLC274CDB, confirming full electrical and functional compatibility.