CLC4550ISO14X Equivalent & Substitute Parts

Part Overview

The CLC4550ISO14X is a 4-channel open-collector comparator manufactured by MaxLinear, Inc., housed in a 14-SOIC surface mount package. This device is designed for general-purpose voltage comparison applications across a wide supply voltage range of 2V to 36V (single supply) or ±1V to ±18V (dual supply). The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

CLC4550ISO14X

MaxLinear, Inc.In Stock: 1057CLC4550ISO14X Datasheet

Current PartRFQ

LM2901QDRQ1

Texas InstrumentsIn Stock: 1384LM2901QDRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLC4550ISO14X is determined by strict alignment of the following critical parameters:

• Number of Elements: 4 channels required
• Output Type: Open-Collector configuration mandatory
• Package / Case: 14-SOIC form factor with 0.154" (3.90mm) width
• Mounting Type: Surface Mount
• Voltage - Supply Range: 2V ~ 36V (single supply) and ±1V ~ ±18V (dual supply) compatibility
• Voltage - Input Offset (Max): 5mV or better
• Current - Input Bias (Max): 0.25µA @ 5V or better
• Current - Output (Typ): Minimum 16mA @ 5V
• Current - Quiescent (Max): 2mA or better
• Operating Temperature: -40°C minimum to 85°C minimum

The LM2901QDRQ1 from Texas Instruments meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM2901QDRQ1 is the qualified substitute for the obsolete CLC4550ISO14X. This substitution is supported by:

• Identical electrical specifications across all critical parameters
• Active product status with ongoing manufacturer support
• AEC-Q100 automotive qualification and ROHS3 compliance
• Extended operating temperature range (-40°C to 125°C) providing additional margin beyond the original specification
• Identical 14-SOIC package footprint ensuring direct PCB compatibility
• Higher typical output current (20mA versus 16mA) and extended temperature range represent performance improvements over the original device

No design modifications are required for this substitution. Pin-for-pin compatibility and functional equivalence are confirmed across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the LM2901QDRQ1 be used as a direct replacement for the CLC4550ISO14X?

A: Yes. The LM2901QDRQ1 meets or exceeds all electrical and mechanical specifications of the CLC4550ISO14X. Pin configuration, package footprint, and functional performance are identical. No circuit modifications are necessary.

Q: What is the difference in input offset voltage between these parts?

A: The CLC4550ISO14X specifies a maximum input offset of 5mV, while the LM2901QDRQ1 specifies 7mV @ 5V. This 2mV difference is within acceptable tolerance for general-purpose comparator applications and does not affect substitution validity.

Q: Does the LM2901QDRQ1 support the same supply voltage range?

A: Yes. Both devices support identical supply voltage ranges: 2V to 36V for single supply operation and ±1V to ±18V for dual supply operation.

Q: Are there any temperature range considerations?

A: The LM2901QDRQ1 operates from -40°C to 125°C, exceeding the original CLC4550ISO14X specification of -40°C to 85°C. This extended range provides additional operational margin and is fully compatible with the original design requirements.

Q: Is the 14-SOIC package identical between both parts?

A: Yes. Both devices use the 14-SOIC package with 0.154" (3.90mm) width. PCB footprints are identical, and no layout modifications are required.

Q: What certifications does the LM2901QDRQ1 carry?

A: The LM2901QDRQ1 is AEC-Q100 qualified for automotive applications and ROHS3 compliant. It is REACH unaffected and carries EAR99 export classification.