TLV274IDRG4 Equivalent & Substitute Parts

Part Overview

The TLV274IDRG4 is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. Manufactured by Texas Instruments, this rail-to-rail output amplifier is designed for low-power applications requiring precision signal conditioning across a wide supply voltage range of 2.7V to 16V.

The TLV274IDRG4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

TLV274IDRG4

Texas InstrumentsIn Stock: 100354TLV274IDRG4 Datasheet

Current PartRFQ

TLV274IDR

Texas InstrumentsIn Stock: 25176TLV274IDR Datasheet

MFR RecommendedRFQ

AD8668ARZ

Analog Devices Inc.In Stock: 2283AD8668ARZ Datasheet

MFR RecommendedRFQ

AD8668ARZ-REEL

Analog Devices Inc.In Stock: 1965AD8668ARZ-REEL Datasheet

MFR RecommendedRFQ

AD8668ARZ-REEL7

Analog Devices Inc.In Stock: 61078AD8668ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV274IDRG4 is determined by strict alignment of the following critical parameters:

Mandatory Matching Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 4 independent channels
• Output Type: Rail-to-Rail
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 125°C minimum
• RoHS Status: ROHS3 Compliant

Allowable Parameter Variations: Substitute parts may exceed the TLV274IDRG4 specifications in the following parameters without compromising functional compatibility:

• Slew Rate (higher values acceptable)
• Gain Bandwidth Product (higher values acceptable)
• Current - Input Bias (lower values acceptable)
• Voltage - Input Offset (higher values acceptable within application tolerance)
• Current - Supply (higher values acceptable)
• Current - Output / Channel (higher values acceptable)
• Voltage - Supply Span (wider ranges acceptable, minimum must not exceed 2.7V, maximum must not be less than 16V)

Packaging Variations: Substitute parts may differ in packaging format (Cut Tape, Tube, Tape & Reel) provided the component package remains 14-SOIC and mounting type remains Surface Mount.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLV274IDR

The TLV274IDR is the direct functional equivalent of the TLV274IDRG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications across all critical parameters. The TLV274IDR maintains active product status, ensuring long-term availability and supply chain continuity. This part is recommended as the first choice for direct replacement in applications currently using the TLV274IDRG4. The only difference is packaging format; the TLV274IDR is supplied in Cut Tape and Digi-Reel formats rather than the original packaging specification.

Secondary Substitutes: AD8668ARZ, AD8668ARZ-REEL, AD8668ARZ-REEL7

The AD8668 series (manufactured by Analog Devices Inc.) provides functional substitution with enhanced electrical performance. All three variants—AD8668ARZ (Tube), AD8668ARZ-REEL (Tape & Reel), and AD8668ARZ-REEL7 (Tape & Reel)—are electrically identical and differ only in packaging format.

The AD8668 series exceeds TLV274IDRG4 specifications in the following parameters:

• Slew Rate: 3.5 V/µs (versus 2.6 V/µs)
• Gain Bandwidth Product: 4 MHz (versus 3 MHz)
• Current - Input Bias: 0.2 pA (versus 1 pA)
• Current - Output / Channel: 140 mA (versus 8 mA)

Critical Compatibility Note: The AD8668 series requires a minimum supply voltage of 5V, whereas the TLV274IDRG4 operates from 2.7V. Applications operating at supply voltages below 5V cannot use the AD8668 series as a substitute.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and the required -40°C to 125°C operating temperature range. Selection between substitutes should be based on application supply voltage requirements and packaging format availability.

Frequently Asked Questions (FAQ)

Q1: Can the TLV274IDR directly replace the TLV274IDRG4 in all applications?

A: Yes. The TLV274IDR is electrically identical to the TLV274IDRG4 across all functional parameters. Both parts feature identical slew rate (2.6 V/µs), gain bandwidth product (3 MHz), input bias current (1 pA), and output current per channel (8 mA). The only difference is packaging format. The TLV274IDR is supplied in Cut Tape and Digi-Reel formats, while the original part used a different packaging specification. Both maintain the same 14-SOIC package footprint and surface-mount compatibility.

Q2: Why does the AD8668 series have a higher minimum supply voltage requirement?

A: The AD8668 series is designed with enhanced performance specifications that require a minimum operating voltage of 5V. The TLV274IDRG4 is optimized for lower-voltage operation, supporting supplies as low as 2.7V. This difference reflects different design architectures and performance targets between the two product families.

Q3: Can I use the AD8668 series in a 2.7V supply application?

A: No. The AD8668 series has a minimum supply voltage specification of 5V and is not rated for operation below this threshold. Using the AD8668 in a 2.7V supply application violates the manufacturer's specifications and may result in unpredictable circuit behavior or component failure. For applications requiring operation below 5V, the TLV274IDR is the appropriate substitute.

Q4: What is the difference between AD8668ARZ, AD8668ARZ-REEL, and AD8668ARZ-REEL7?

A: These three part numbers are electrically identical. The differences are in packaging format only. AD8668ARZ is supplied in Tube packaging, AD8668ARZ-REEL is supplied in standard Tape & Reel format, and AD8668ARZ-REEL7 is supplied in Tape & Reel format with a 7-inch reel. Selection between these variants depends on your procurement and assembly process requirements.

Q5: Are all substitute parts RoHS3 compliant?

A: Yes. The TLV274IDR and all AD8668 variants (AD8668ARZ, AD8668ARZ-REEL, AD8668ARZ-REEL7) are ROHS3 compliant. All parts also maintain Moisture Sensitivity Level 1 (Unlimited) rating, indicating no special moisture handling requirements during storage or assembly.

Q6: What is the key parameter that determines substitution compatibility?

A: The 14-SOIC surface-mount package format is the primary mechanical constraint. All substitute parts must maintain this package specification to ensure PCB footprint compatibility. Electrically, the four-channel general-purpose rail-to-rail amplifier architecture with -40°C to 125°C operating temperature range defines the functional class. Supply voltage range is the critical electrical parameter that may limit substitution; applications operating below 5V cannot use the AD8668 series.

Q7: Should I prefer the TLV274IDR or AD8668 series for new designs?

A: For new designs, the choice depends on application requirements. If your design operates at supply voltages below 5V, the TLV274IDR is the only option. If your design operates at 5V or higher and benefits from enhanced performance (higher slew rate, higher output current capability, lower input bias current), the AD8668 series offers superior specifications. Both families are active products with reliable long-term availability.