BA1604F-E2 Equivalent & Substitute Parts

Part Overview

The BA1604F-E2 is a telecom interface tone decoder IC manufactured by Rohm Semiconductor in 8-SOP surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance, redesigns, and new production runs. The tone decoder function remains critical in telecom applications requiring frequency detection and signal processing capabilities.

Substiute Parts

BA1604F-E2

Rohm SemiconductorIn Stock: 3039BA1604F-E2 Datasheet

Current PartRFQ

LM567CM/NOPB

Texas InstrumentsIn Stock: 2272LM567CM/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BA1604F-E2 is determined by the following critical parameters:

Functional Compatibility: Both the main part and substitute must perform the tone decoder function for telecom interface applications.

Electrical Parameters: Supply voltage range (4.75V ~ 9V) and number of circuits (1) must be maintained or exceeded. Current supply and power dissipation specifications define operational envelope compatibility.

Mechanical Compatibility: Surface mount packaging with 8-pin SOIC configuration ensures PCB layout compatibility. Package width variations (4.40mm vs. 3.90mm) remain within standard SOIC tolerances and do not prevent substitution.

Operating Temperature Range: The substitute must support the application's thermal requirements. The BA1604F-E2 operates from -40°C to 85°C; substitutes with narrower ranges require application-level thermal verification.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status ensure environmental and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The LM567CM/NOPB from Texas Instruments qualifies as a direct substitute for the BA1604F-E2 based on functional equivalence and electrical parameter alignment. Both components share identical supply voltage specifications (4.75V ~ 9V), single-circuit tone decoder architecture, and surface mount 8-SOIC packaging.

The LM567CM/NOPB carries active product status, ensuring long-term availability and supply chain continuity compared to the obsolete BA1604F-E2. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification, satisfying regulatory and environmental requirements.

Current supply differential (12mA vs. 10mA) and power dissipation increase (1.1W vs. 350mW) remain within acceptable operational margins for most telecom interface applications. Operating temperature range narrowing (0°C ~ 70°C vs. -40°C ~ 85°C) requires application-level assessment only in extended temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the LM567CM/NOPB directly replace the BA1604F-E2 on existing PCBs?

A: Yes. Both components use 8-SOIC surface mount packaging with identical pin configurations. Package width variation (3.90mm vs. 4.40mm) falls within standard SOIC tolerances and does not prevent direct PCB substitution.

Q: What are the key electrical differences between these parts?

A: Supply voltage range is identical (4.75V ~ 9V). Current supply increases from 10mA to 12mA, and power dissipation increases from 350mW to 1.1W. These differences are within acceptable operational margins for tone decoder applications.

Q: Does the operating temperature range difference affect substitution?

A: The LM567CM/NOPB operates from 0°C to 70°C, compared to the BA1604F-E2 range of -40°C to 85°C. Substitution is valid for applications within the 0°C to 70°C window. Extended temperature operation requires alternative component selection.

Q: Are both parts RoHS compliant?

A: Yes. Both the BA1604F-E2 and LM567CM/NOPB are ROHS3 compliant with unlimited moisture sensitivity classification (MSL 1), meeting current environmental and regulatory standards.

Q: Why is the BA1604F-E2 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The LM567CM/NOPB maintains active status, providing assured supply availability for new designs and production continuity.