LMC567CMX Equivalent & Substitute Parts

Part Overview

The LMC567CMX is a telecom interface integrated circuit functioning as a tone decoder, manufactured by Texas Instruments in the LMCMOS™ series. This device is designed for telecommunications applications requiring single-channel tone detection in an 8-SOIC surface mount package. The LMC567CMX is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support.

Substiute Parts

LMC567CMX

Texas InstrumentsIn Stock: 17870LMC567CMX Datasheet

Current PartRFQ

LMC567CMX/NOPB

Texas InstrumentsIn Stock: 55394LMC567CMX/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMC567CMX is determined by strict equivalence across the following parameters:

• Functional equivalence: Tone decoder function with single-circuit configuration
• Electrical compatibility: Supply voltage range 2V ~ 9V, power dissipation 500 mW
• Thermal compatibility: Operating temperature range -25°C ~ 100°C
• Mechanical compatibility: 8-SOIC surface mount package with 0.154" (3.90mm) width
• Series continuity: LMCMOS™ series designation

The LMC567CMX/NOPB qualifies as a parametric equivalent substitute, maintaining identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LMC567CMX/NOPB is the direct substitute for the obsolete LMC567CMX. Both parts maintain identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility. The primary distinction is product status: the LMC567CMX/NOPB carries active product status with ROHS3 compliance, whereas the original LMC567CMX is obsolete and RoHS non-compliant.

For new designs and production continuity, the LMC567CMX/NOPB is the appropriate selection. The /NOPB suffix indicates lead-free plating, aligning with modern manufacturing and environmental standards. Both parts share identical supply voltage ranges, power dissipation, operating temperature specifications, and 8-SOIC packaging, eliminating the need for circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the LMC567CMX/NOPB be used as a direct replacement for the LMC567CMX?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including supply voltage (2V ~ 9V), power dissipation (500 mW), operating temperature range (-25°C ~ 100°C), and 8-SOIC package configuration. No circuit modifications are required.

Q: What does the /NOPB suffix indicate?

A: The /NOPB designation specifies lead-free plating on the component leads, indicating compliance with RoHS3 standards. This is a packaging and material specification that does not affect electrical performance.

Q: Why is the original LMC567CMX classified as obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and production decisions. The LMC567CMX/NOPB remains in active production and is the recommended part for all applications.

Q: Are there any differences in pin configuration between these parts?

A: No. Both the LMC567CMX and LMC567CMX/NOPB use the identical 8-SOIC package with the same pin assignments and functional configuration.

Q: What is the difference in RoHS compliance between these parts?

A: The LMC567CMX is RoHS non-compliant, while the LMC567CMX/NOPB is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the LMC567CMX/NOPB is the appropriate selection.