LMH6704MA Equivalent & Substitute Parts

Part Overview

The LMH6704MA is a buffer amplifier integrated circuit manufactured by Texas Instruments, designed for high-speed signal conditioning applications. This device features a single buffer circuit in an 8-SOIC surface mount package with a slew rate of 3000V/µs and -3dB bandwidth of 650 MHz. The LMH6704MA is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance within the specified parameter ranges while meeting current manufacturing and compliance standards.

Substiute Parts

LMH6704MA

Texas InstrumentsIn Stock: 5496LMH6704MA Datasheet

Current PartRFQ

LMH6704MA/NOPB

Texas InstrumentsIn Stock: 899LMH6704MA/NOPB Datasheet

DirectRFQ

AD9631ARZ-REEL7

Analog Devices Inc.In Stock: 18346AD9631ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMH6704MA are identified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following parameters:

Mechanical Compatibility: All substitute parts must use the 8-SOIC surface mount package with identical pinout and physical dimensions (0.154", 3.90mm Width).

Electrical Performance Criteria: Substitute parts must operate within the specified supply voltage range (8V to 12V minimum, 12V maximum), support the operating temperature range (-40°C to 85°C), and maintain single-circuit configuration.

Performance Threshold Parameters: While exact performance matching is not required for substitution, parts must be capable of functioning in buffer or voltage feedback amplifier applications within the specified electrical envelope.

The LMH6704MA/NOPB is a direct manufacturer variant with identical electrical specifications and active product status. The AD9631ARZ-REEL7 is a cross-manufacturer substitute with different amplifier topology (voltage feedback versus buffer) but compatible package, supply voltage, temperature range, and single-circuit configuration.

Parameter Comparison

Engineering Selection Recommendations

LMH6704MA/NOPB (Direct Manufacturer Substitute): This part is the recommended primary substitute. It maintains identical electrical specifications to the LMH6704MA while offering active product status and ROHS3 compliance. The LMH6704MA/NOPB is packaged in Tube format and is suitable for direct replacement in all applications where the obsolete LMH6704MA was previously specified. This substitute eliminates obsolescence risk while preserving all electrical performance characteristics.

AD9631ARZ-REEL7 (Cross-Manufacturer Substitute): This Analog Devices part provides an alternative solution for applications where the LMH6704MA/NOPB is unavailable. The AD9631ARZ-REEL7 operates within the same supply voltage range (6V to 12V) and temperature range (-40°C to 85°C) in an identical 8-SOIC package. However, this part features voltage feedback amplifier topology rather than buffer topology, with reduced slew rate (1300V/µs versus 3000V/µs) and reduced -3dB bandwidth (320 MHz versus 650 MHz). The AD9631ARZ-REEL7 is suitable only for applications where these performance reductions are acceptable. This part is ROHS3 compliant and carries active product status.

Both substitute parts are REACH Unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can the LMH6704MA/NOPB be used as a direct replacement for the LMH6704MA?

A: Yes. The LMH6704MA/NOPB is a direct manufacturer variant with identical electrical specifications, operating temperature range, supply voltage requirements, and 8-SOIC package configuration. The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus Non-compliant).

Q: What are the key differences between the LMH6704MA and the AD9631ARZ-REEL7?

A: The LMH6704MA is a buffer amplifier with 3000V/µs slew rate and 650 MHz bandwidth. The AD9631ARZ-REEL7 is a voltage feedback amplifier with 1300V/µs slew rate and 320 MHz bandwidth. Both operate within the 8V to 12V supply range, support the -40°C to 85°C temperature range, and use the 8-SOIC package. The AD9631ARZ-REEL7 has lower input bias current (2 µA versus 5 µA) but higher supply current (17 mA versus 11.5 mA).

Q: Is the AD9631ARZ-REEL7 suitable for all LMH6704MA applications?

A: The AD9631ARZ-REEL7 is suitable only for applications where the reduced slew rate (1300V/µs) and reduced bandwidth (320 MHz) are acceptable. Applications requiring the full 3000V/µs slew rate or 650 MHz bandwidth performance of the LMH6704MA must use the LMH6704MA/NOPB.

Q: What is the packaging difference between LMH6704MA and LMH6704MA/NOPB?

A: The LMH6704MA is supplied in standard packaging (not specified in detail). The LMH6704MA/NOPB is supplied in Tube packaging. Both use the 8-SOIC surface mount package with identical pinout and physical dimensions.

Q: Are all substitute parts RoHS compliant?

A: The LMH6704MA is RoHS non-compliant. Both substitute parts (LMH6704MA/NOPB and AD9631ARZ-REEL7) are ROHS3 compliant.

Q: Can these parts be used interchangeably in PCB designs?

A: The LMH6704MA and LMH6704MA/NOPB share identical pinout and can be used interchangeably without PCB modification. The AD9631ARZ-REEL7 uses the same 8-SOIC package and pinout, allowing PCB-level compatibility, but circuit performance will differ due to different amplifier topology and electrical specifications.