LM6142AIM Equivalent & Substitute Parts

Part Overview

The LM6142AIM is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package. This device delivers rail-to-rail output capability with a slew rate of 25V/µs and a gain-bandwidth product of 18 MHz, suitable for applications requiring low-power, dual-channel amplification across a wide supply voltage range of 1.8V to 24V.

The LM6142AIM currently holds Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

LM6142AIM

Texas InstrumentsIn Stock: 8149LM6142AIM Datasheet

Current PartRFQ

LM6142AIMX/NOPB

Texas InstrumentsIn Stock: 7133LM6142AIMX/NOPB Datasheet

MFR RecommendedRFQ

AD8397ARZ-REEL

Analog Devices Inc.In Stock: 5720AD8397ARZ-REEL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM6142AIM is determined by the following criteria:

Mandatory Compatibility Parameters:

• Package type: 8-SOIC surface-mount form factor
• Number of circuits: 2 independent amplifier channels
• Output configuration: Rail-to-rail output capability
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage span: Minimum 1.8V to maximum 24V

Functional Performance Parameters:

• Slew rate: 25V/µs or greater
• Gain-bandwidth product: 18 MHz or greater
• Input bias current: 174 nA or lower
• Input offset voltage: 1.3 mV or lower
• Output current per channel: 24 mA or greater
• Supply current: 750µA per channel or lower

Two substitute parts meet these criteria: LM6142AIMX/NOPB (Texas Instruments, same base product with active status and improved compliance) and AD8397ARZ-REEL (Analog Devices Inc., voltage feedback topology with enhanced performance specifications).

Parameter Comparison

Engineering Selection Recommendations

LM6142AIMX/NOPB (Texas Instruments)

The LM6142AIMX/NOPB is the direct functional equivalent of the LM6142AIM, sharing identical electrical specifications and the same 8-SOIC package footprint. This part is the primary substitute option due to its Active product status, ensuring long-term availability and supply continuity. The LM6142AIMX/NOPB achieves ROHS3 compliance and REACH unaffected status, addressing regulatory requirements that the original LM6142AIM does not meet. Packaging is available in Cut Tape and Digi-Reel formats, with 7,059 units currently in stock. This part is suitable for direct replacement in existing designs without circuit modification.

AD8397ARZ-REEL (Analog Devices Inc.)

The AD8397ARZ-REEL is a performance-enhanced substitute featuring a voltage feedback topology. This part exceeds the LM6142AIM specifications in slew rate (53V/µs versus 25V/µs), gain-bandwidth product (35 MHz versus 18 MHz), input bias current (0.2 pA versus 174 nA), and output current per channel (310 mA versus 24 mA). The AD8397ARZ-REEL maintains the same 8-SOIC package and dual-circuit configuration with rail-to-rail output. However, the minimum supply voltage requirement is 3V, compared to 1.8V for the LM6142AIM, which may restrict use in ultra-low-voltage applications. The AD8397ARZ-REEL is ROHS3 compliant and REACH unaffected, with 5,650 units in stock. This part is suitable for applications requiring higher bandwidth, faster slew rate, or greater output drive capability.

Frequently Asked Questions (FAQ)

Q: Can the LM6142AIMX/NOPB be used as a direct replacement for the LM6142AIM?

A: Yes. The LM6142AIMX/NOPB is electrically and mechanically identical to the LM6142AIM. Both parts share the same base product number (LM6142), identical electrical specifications, and 8-SOIC package. The primary differences are product status (Active versus Last Time Buy) and regulatory compliance (ROHS3 compliant and REACH unaffected versus non-compliant and REACH affected). No circuit modifications are required.

Q: What are the key differences between the LM6142AIM and the AD8397ARZ-REEL?

A: The AD8397ARZ-REEL offers superior performance in several areas: slew rate is 53V/µs (2.1× faster), gain-bandwidth product is 35 MHz (1.9× higher), input bias current is 0.2 pA (870× lower), and output current per channel is 310 mA (12.9× higher). However, the AD8397ARZ-REEL requires a minimum supply voltage of 3V, whereas the LM6142AIM operates from 1.8V. The AD8397ARZ-REEL uses a voltage feedback topology, while the LM6142AIM is a general-purpose design. Both maintain the 8-SOIC package and dual-circuit configuration.

Q: Is the AD8397ARZ-REEL suitable for low-voltage applications below 3V?

A: No. The AD8397ARZ-REEL has a minimum supply voltage specification of 3V and is not rated for operation below this threshold. For applications requiring operation at 1.8V to 3V, the LM6142AIM or LM6142AIMX/NOPB must be used.

Q: What packaging formats are available for each substitute part?

A: The LM6142AIM is supplied in Tube packaging. The LM6142AIMX/NOPB is available in Cut Tape (CT) and Digi-Reel formats. The AD8397ARZ-REEL is supplied in Tape & Reel (TR) format. All three parts use the same 8-SOIC (0.154", 3.90mm width) surface-mount package, ensuring PCB footprint compatibility.

Q: Are both substitute parts RoHS and REACH compliant?

A: Yes. Both the LM6142AIMX/NOPB and AD8397ARZ-REEL are ROHS3 compliant and REACH unaffected. The original LM6142AIM is RoHS non-compliant and REACH affected. For designs subject to RoHS or REACH regulations, either substitute part is required.

Q: Which substitute part should be selected for maximum performance?

A: The AD8397ARZ-REEL provides the highest performance specifications, including 2.1× faster slew rate, 1.9× higher bandwidth, and 12.9× greater output current capability. However, this part requires a minimum 3V supply voltage. For applications operating above 3V where higher bandwidth and output drive are beneficial, the AD8397ARZ-REEL is the appropriate choice. For applications requiring operation at 1.8V or where identical electrical characteristics are necessary, the LM6142AIMX/NOPB is the correct selection.