LM567CN Equivalent & Substitute Parts

Part Overview

The LM567CN is a telecom interface integrated circuit functioning as a tone decoder, housed in an 8-pin DIP package. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing system maintenance and new design implementations. The LM567CN/NOPB represents the active production equivalent with identical electrical and mechanical specifications.

Substiute Parts

LM567CN

Texas InstrumentsIn Stock: 4456LM567CN Datasheet

Current PartRFQ

LM567CN/NOPB

Texas InstrumentsIn Stock: 1728LM567CN/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM567CN is determined by strict equivalence across the following critical parameters:

• Functional equivalence: Tone decoder function with single circuit configuration
• Electrical specifications: Supply voltage range 4.75V ~ 9V, supply current 12mA, power dissipation 1.1 W
• Thermal specifications: Operating temperature range 0°C ~ 70°C
• Mechanical compatibility: 8-pin DIP package with 0.300" (7.62mm) pitch, through-hole mounting
• Pin configuration: Identical pinout as base product number LM567

The LM567CN/NOPB qualifies as a direct substitute based on complete alignment with all specified electrical, thermal, and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM567CN/NOPB is the direct functional and electrical equivalent of the LM567CN. Selection between these parts is determined by application requirements and regulatory compliance:

For new designs and systems requiring regulatory compliance: The LM567CN/NOPB is the appropriate selection, as it maintains active product status and achieves ROHS3 compliance, whereas the original LM567CN is obsolete and RoHS non-compliant.

For legacy system maintenance: The LM567CN/NOPB provides identical electrical performance and mechanical compatibility, enabling direct substitution in existing through-hole PCB layouts without circuit modification.

Both parts share identical supply voltage specifications (4.75V ~ 9V), current draw (12mA), thermal operating range (0°C ~ 70°C), and 8-pin DIP package geometry, ensuring pin-for-pin compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LM567CN/NOPB be used as a direct replacement for the LM567CN?

A: Yes. The LM567CN/NOPB is electrically and mechanically identical to the LM567CN across all specified parameters: supply voltage, current consumption, power dissipation, operating temperature range, and 8-DIP package configuration. Direct substitution is possible without circuit modification.

Q: What is the difference between LM567CN and LM567CN/NOPB?

A: The primary differences are product status and compliance certification. The LM567CN is obsolete and RoHS non-compliant, while the LM567CN/NOPB is active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

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

A: No. Both parts use the 8-pin DIP package with 0.300" (7.62mm) pitch and identical pinout. Through-hole PCB layouts require no modification.

Q: What packaging formats are available?

A: The LM567CN is supplied in bulk packaging, while the LM567CN/NOPB is supplied in tube packaging. Both formats contain the same component.

Q: Is the LM567CN/NOPB suitable for new product designs?

A: Yes. The LM567CN/NOPB is the active production part and is recommended for all new designs. It provides ROHS3 compliance and ongoing manufacturer support.