LMH6504MM Variable Gain Amplifier Equivalent & Substitute Parts

Part Overview

The LMH6504MM is a variable gain amplifier integrated circuit manufactured by Texas Instruments, designed for wideband, low-power applications requiring adjustable gain control. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The LMH6504MM operates as a single-circuit variable gain amplifier in an 8-VSSOP surface mount package. Due to its obsolete status, sourcing alternatives with identical electrical and mechanical specifications is critical for system continuity and long-term component availability.

Substiute Parts

LMH6504MM

Texas InstrumentsIn Stock: 1545LMH6504MM Datasheet

Current PartRFQ

LMH6504MM/NOPB

National SemiconductorIn Stock: 863LMH6504MM/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMH6504MM is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Amplifier type (Variable Gain)
• Number of circuits (1)
• Slew rate (1500 V/µs)
• Bandwidth (-3dB at 150 MHz)
• Input bias current (1.4 µA)
• Supply current (11 mA)
• Output current per channel (80 mA)
• Supply voltage range (7 V to 12 V)
• Operating temperature range (-40°C to 85°C)

Mechanical Specifications:

• Mounting type (Surface Mount)
• Package type (8-VSSOP)
• Physical dimensions (0.118", 3.00mm Width)

The LMH6504MM/NOPB qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters listed above.

Parameter Comparison

Engineering Selection Recommendations

The LMH6504MM/NOPB serves as the direct equivalent substitute for the obsolete LMH6504MM. Both components share identical electrical performance specifications and mechanical packaging requirements.

Selection Basis:

The LMH6504MM/NOPB is manufactured by National Semiconductor and maintains active product status, ensuring continued availability and supply chain support. This contrasts with the LMH6504MM, which carries obsolete classification.

All critical parameters—including slew rate, bandwidth, bias current, supply current, output current, supply voltage range, operating temperature, and package dimensions—are identical between the two parts. This equivalence permits direct substitution in existing designs without circuit modification or re-qualification.

The LMH6504MM/NOPB carries the same ECCN (EAR99) and HTSUS (8542.33.0001) classifications as the original part, maintaining regulatory and trade compliance.

Frequently Asked Questions (FAQ)

Q: Can the LMH6504MM/NOPB be used as a direct replacement for the LMH6504MM?

A: Yes. The LMH6504MM/NOPB is electrically and mechanically equivalent to the LMH6504MM. All specified parameters—gain characteristics, bandwidth, slew rate, supply current, bias current, output current, supply voltage range, operating temperature, and package type—are identical. Direct substitution is supported without circuit redesign.

Q: What is the primary reason for substituting the LMH6504MM?

A: The LMH6504MM is classified as obsolete. The LMH6504MM/NOPB maintains active product status, ensuring long-term availability and supply chain continuity.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 8-VSSOP package with identical physical dimensions (0.118", 3.00mm Width). PCB footprints and assembly processes remain unchanged.

Q: Do the supply voltage requirements differ?

A: No. Both parts operate across the identical supply voltage range of 7 V to 12 V. Power supply design and circuit biasing remain unchanged.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across -40°C to 85°C. Thermal design and environmental specifications are identical.

Q: Are there any compliance or certification differences?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications. Regulatory and trade compliance requirements are equivalent.

Q: What is the difference between the two part numbers?

A: The LMH6504MM/NOPB includes the "/NOPB" suffix, indicating "No Plumbum" (lead-free) packaging. The base device LMH6504 is identical. The primary distinction is product status: LMH6504MM is obsolete, while LMH6504MM/NOPB is active.