LMH6655MA Equivalent & Substitute Parts

Part Overview

The LMH6655MA is a voltage feedback amplifier integrated circuit featuring two independent circuits in an 8-SOIC surface mount package. This device is classified as obsolete, though functionally equivalent active alternatives are available. The LMH6655MA delivers a gain bandwidth product of 260 MHz with a slew rate of 200V/µs, suitable for high-speed signal conditioning and amplification applications requiring dual-channel configurations.

Due to the obsolete status of the LMH6655MA, identification of equivalent substitute parts with matching electrical and mechanical specifications is necessary for design continuity and procurement planning. Active alternatives maintain identical performance parameters while offering current manufacturing availability.

Substiute Parts

LMH6655MA

Texas InstrumentsIn Stock: 1401LMH6655MA Datasheet

Current PartRFQ

LMH6655MA/NOPB

Texas InstrumentsIn Stock: 1248LMH6655MA/NOPB Datasheet

DirectRFQ

LMH6655MAX/NOPB

Texas InstrumentsIn Stock: 2865LMH6655MAX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMH6655MA are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is structured as follows:

Primary Substitution Criteria:

• Amplifier Type: Voltage Feedback
• Number of Circuits: 2 independent channels
• Gain Bandwidth Product: 260 MHz
• Slew Rate: 200V/µs
• Input Bias Current: 5 µA
• Input Offset Voltage: 1 mV
• Supply Current: 4.5mA per channel
• Output Current per Channel: 120 mA
• Supply Voltage Range: 4.5V to 12V
• Operating Temperature: -40°C to 85°C
• Package: 8-SOIC surface mount

Grouping Structure:

Group 1: Direct Texas Instruments Equivalents (Active Status) These parts are manufactured by Texas Instruments and maintain identical electrical specifications with the LMH6655MA. They differ only in packaging format (Tube versus Tape & Reel) and product status (Active versus Obsolete).

• LMH6655MA/NOPB (Tube packaging, Active status)
• LMH6655MAX/NOPB (Tape & Reel packaging, Active status)

Both parts are pin-compatible, functionally identical, and represent the direct manufacturer upgrade path from the obsolete LMH6655MA.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Procurement:

The LMH6655MA/NOPB and LMH6655MAX/NOPB are the recommended substitutes for the obsolete LMH6655MA. Both parts are manufactured by Texas Instruments and carry Active product status, ensuring long-term availability and manufacturing support.

Selection Between Tube and Tape & Reel Packaging:

• LMH6655MA/NOPB (Tube): Suitable for low-volume applications, prototype development, and manual assembly processes. Inventory availability: 1205 pieces.

• LMH6655MAX/NOPB (Tape & Reel): Optimized for high-volume production and automated assembly lines. Tape & Reel packaging enables efficient pick-and-place machine integration. Inventory availability: 2787 pieces.

Compliance Considerations:

Both substitute parts maintain full compliance with ROHS3 and REACH regulations. Moisture Sensitivity Level 1 (Unlimited) indicates no special storage or handling requirements beyond standard electronic component practices. All parts carry EAR99 export classification.

Pin Compatibility:

The LMH6655MA/NOPB and LMH6655MAX/NOPB are direct pin-for-pin replacements. No circuit modifications or PCB redesign is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can LMH6655MA/NOPB and LMH6655MAX/NOPB be used interchangeably in the same circuit?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tube versus Tape & Reel). Selection depends on assembly process requirements and procurement volume.

Q: What is the difference between the LMH6655MA and LMH6655MA/NOPB?

A: The LMH6655MA is obsolete, while LMH6655MA/NOPB is active. The "/NOPB" suffix indicates "No Plumbum" (lead-free) compliance. Electrically and mechanically, they are equivalent. The LMH6655MA/NOPB is the recommended replacement for new designs.

Q: Is the 8-SOIC package footprint identical across all three part numbers?

A: Yes. All three parts use the 8-SOIC package with 0.154" (3.90mm) width. PCB footprints are identical, and no layout modifications are required for substitution.

Q: What are the key electrical parameters that define substitutability for the LMH6655MA?

A: Substitutability is determined by: dual-channel voltage feedback amplifier topology, 260 MHz gain bandwidth product, 200V/µs slew rate, 5µA input bias current, 1mV input offset voltage, 4.5mA supply current per channel, 120mA output current per channel, and 4.5V to 12V supply voltage range.

Q: Are there any temperature or environmental restrictions for these parts?

A: All three parts operate across -40°C to 85°C. Moisture Sensitivity Level 1 (Unlimited) indicates no special environmental controls are required. Standard electronic component storage and handling practices apply.

Q: Which part should be selected for high-volume automated assembly?

A: LMH6655MAX/NOPB in Tape & Reel format is optimized for automated pick-and-place assembly. This packaging format provides superior efficiency in high-volume production environments.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.