THS4131CD Equivalent & Substitute Parts

Part Overview

The THS4131CD is a differential amplifier integrated circuit manufactured by Texas Instruments, designed for high-speed signal conditioning applications. This device features a single differential amplifier circuit in an 8-SOIC surface mount package with a gain bandwidth product of 225 MHz and a slew rate of 52 V/µs. The THS4131CD is currently designated as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

THS4131CD

Texas InstrumentsIn Stock: 2234THS4131CD Datasheet

Current PartRFQ

THS4131IDR

Texas InstrumentsIn Stock: 1543THS4131IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the THS4131CD is determined by strict equivalence across the following critical parameters:

Electrical Performance Parameters: Slew Rate (52 V/µs), Gain Bandwidth Product (225 MHz), -3dB Bandwidth (150 MHz), Current - Input Bias (2 µA), Voltage - Input Offset (200 µV), Current - Supply (12.3 mA), Current - Output / Channel (85 mA), and Supply Voltage Range (4 V to 33 V) must remain identical.

Functional Architecture: Amplifier Type (Differential), Number of Circuits (1), and Output Type (Differential) must be preserved.

Physical and Environmental Specifications: Package / Case (8-SOIC), Mounting Type (Surface Mount), RoHS Status (ROHS3 Compliant), and Moisture Sensitivity Level (1) must match.

Compliance and Regulatory: REACH Status (REACH Unaffected) and ECCN (EAR99) must be maintained.

Substitute parts meeting all these criteria are functionally and mechanically interchangeable with the THS4131CD in existing designs without circuit modification or PCB redesign.

Parameter Comparison

Engineering Selection Recommendations

The THS4131IDR is a direct functional and mechanical equivalent to the THS4131CD. All electrical performance parameters, package specifications, and regulatory compliance certifications are identical. The THS4131IDR is currently in Active product status, ensuring ongoing availability and supply chain continuity.

The primary distinction between these parts is the operating temperature range. The THS4131CD operates from 0°C to 70°C, while the THS4131IDR operates from -40°C to 85°C. For applications operating within the THS4131CD temperature range, the THS4131IDR provides an extended temperature capability without any performance degradation.

Both parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), REACH unaffected status, and EAR99 export classification. The THS4131IDR is suitable for direct replacement in existing designs without circuit modification, PCB redesign, or firmware changes.

Frequently Asked Questions (FAQ)

Q: Can the THS4131IDR be used as a direct replacement for the THS4131CD?

A: Yes. The THS4131IDR is electrically and mechanically equivalent to the THS4131CD. All electrical parameters, package dimensions, and mounting specifications are identical. Direct substitution is possible without circuit modification.

Q: What is the difference between the THS4131CD and THS4131IDR?

A: The primary difference is the operating temperature range. The THS4131CD operates from 0°C to 70°C, while the THS4131IDR operates from -40°C to 85°C. The THS4131IDR also has Active product status, whereas the THS4131CD is Last Time Buy.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, have MSL 1 (Unlimited), REACH unaffected status, and EAR99 export classification. Regulatory and compliance requirements are identical.

Q: What is the package type for both parts?

A: Both the THS4131CD and THS4131IDR use the 8-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints and assembly processes are identical.

Q: Are the electrical performance specifications identical?

A: Yes. Slew rate (52 V/µs), gain bandwidth product (225 MHz), -3dB bandwidth (150 MHz), input bias current (2 µA), input offset voltage (200 µV), supply current (12.3 mA), output current per channel (85 mA), and supply voltage range (4 V to 33 V) are identical for both parts.

Q: Why is the THS4131CD designated as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer has discontinued or will discontinue production of this part number. The THS4131IDR is the recommended active substitute for continued design support and supply availability.

Q: Can I use the THS4131IDR in applications with temperature requirements below 0°C or above 70°C?

A: The THS4131IDR supports operation from -40°C to 85°C, which extends beyond the original THS4131CD range. For applications requiring operation below 0°C or above 70°C, the THS4131IDR provides additional temperature margin.