TLC2654AI-8D Equivalent & Substitute Parts

Part Overview

The TLC2654AI-8D is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device is classified as a LinCMOS™ series amplifier with a single circuit configuration and is currently designated as Last Time Buy status. The TLC2654AI-8D is suitable for applications requiring low input bias current and low input offset voltage in a compact form factor.

Identification of substitute parts becomes necessary when the TLC2654AI-8D reaches end-of-life status or when inventory constraints require alternative sourcing. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges to ensure direct replacement capability.

Substiute Parts

TLC2654AI-8D

Texas InstrumentsIn Stock: 732TLC2654AI-8D Datasheet

Current PartRFQ

OPA182IDR

Texas InstrumentsIn Stock: 3129OPA182IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC2654AI-8D is determined by compatibility across the following critical parameters:

Mechanical Compatibility: The substitute part must use the 8-SOIC surface-mount package with identical pin configuration and physical dimensions (0.154" width, 3.90mm).

Electrical Compatibility: The substitute part must operate within the specified supply voltage range (minimum 4.6 V, maximum 16 V for the TLC2654AI-8D). The substitute must support single-circuit amplifier configuration with output current capability of at least 50 mA per channel.

Performance Parameters: Input bias current, input offset voltage, slew rate, and gain bandwidth product define the functional performance envelope. Substitute parts may exceed these specifications without compromising compatibility, provided they remain within the same package and supply voltage constraints.

Environmental and Compliance: The substitute part must maintain RoHS compliance and operate within the specified temperature range or an extended range that encompasses the original specification.

The OPA182IDR qualifies as a direct substitute based on these criteria, despite offering enhanced performance characteristics in several parameters.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TLC2654AI-8D is designated Last Time Buy, indicating imminent discontinuation. The OPA182IDR is classified as Active, ensuring continued availability and long-term supply chain stability.

Compliance and Certification: The TLC2654AI-8D carries ROHS3 compliance certification. The OPA182IDR RoHS status is listed as Not applicable. Both devices carry EAR99 ECCN classification and identical HTSUS codes (8542.33.0001), confirming equivalent regulatory treatment.

Packaging and Handling: The TLC2654AI-8D specifies MSL 1 (Unlimited moisture sensitivity), while the OPA182IDR specifies MSL 2 (1 Year). This difference requires adherence to standard moisture control procedures for the OPA182IDR during storage and handling.

Supply Voltage Compatibility: The OPA182IDR supports an extended maximum supply voltage of 36 V compared to the TLC2654AI-8D maximum of 16 V. Applications operating at or below 16 V experience full compatibility. Applications requiring voltages between 16 V and 36 V benefit from the OPA182IDR's extended range.

Performance Enhancement: The OPA182IDR provides superior performance across multiple parameters: 2.7× higher slew rate, 2.6× higher gain bandwidth product, 8.9× lower input offset voltage, and 43% lower supply current. These enhancements do not compromise substitution compatibility and may improve circuit performance.

Temperature Range: The OPA182IDR extends the upper operating temperature limit to 125°C compared to the TLC2654AI-8D at 85°C. Applications requiring operation above 85°C require the OPA182IDR.

Frequently Asked Questions (FAQ)

Q: Can the OPA182IDR directly replace the TLC2654AI-8D in existing PCB designs?

A: Yes. Both devices use identical 8-SOIC packaging with matching pin configurations and physical dimensions. No PCB modifications are required. The OPA182IDR operates within the TLC2654AI-8D supply voltage range (4.6 V to 16 V) and maintains pin-for-pin compatibility.

Q: What is the significance of the OPA182IDR's Zero-Drift amplifier classification compared to the TLC2654AI-8D's General Purpose classification?

A: Zero-Drift architecture in the OPA182IDR provides superior input offset voltage performance (0.45 µV versus 4 µV). This architectural difference does not affect substitution compatibility but delivers improved precision in applications sensitive to offset voltage drift over temperature and time.

Q: Does the OPA182IDR's Rail-to-Rail output capability affect compatibility with the TLC2654AI-8D?

A: No. Rail-to-Rail output is an enhancement that extends the usable output voltage range to the supply rails. This feature is backward-compatible with designs expecting standard output ranges and does not compromise substitution.

Q: How does the difference in Moisture Sensitivity Level (MSL 1 versus MSL 2) impact component handling?

A: The TLC2654AI-8D (MSL 1) has unlimited shelf life under standard conditions. The OPA182IDR (MSL 2) requires storage in controlled humidity environments and has a one-year floor-life limit after moisture barrier bag opening. Standard moisture control procedures during assembly prevent moisture-related failures.

Q: Is the OPA182IDR suitable for applications operating above 16 V?

A: Yes. The OPA182IDR supports supply voltages up to 36 V, enabling use in higher-voltage applications where the TLC2654AI-8D is limited to 16 V maximum.

Q: What is the impact of the OPA182IDR's lower supply current (0.85 mA versus 1.5 mA) on circuit design?

A: Lower supply current reduces power consumption and heat generation, providing a performance advantage. No circuit redesign is required; existing designs benefit from reduced power dissipation.

Q: Are there any temperature range limitations when substituting the OPA182IDR for the TLC2654AI-8D?

A: The OPA182IDR extends the upper temperature limit to 125°C. Applications operating within the TLC2654AI-8D range (-40°C to 85°C) experience full compatibility. Applications requiring operation above 85°C benefit from the OPA182IDR's extended range.

Q: Does the higher slew rate of the OPA182IDR (10 V/µs versus 3.7 V/µs) require circuit modifications?

A: No. Higher slew rate is a performance enhancement that improves transient response without requiring design changes. Existing circuits operate identically or with improved performance characteristics.