ICM7224RIPL Equivalent & Substitute Parts

Part Overview

The ICM7224RIPL is a 7-segment LCD driver IC manufactured by Analog Devices Inc./Maxim Integrated, designed for 4.5-digit display applications. This component operates as a dedicated display driver with low power consumption (10 µA supply current) and operates across a 3V to 6V supply voltage range. The device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

ICM7224RIPL

Analog Devices Inc./Maxim IntegratedIn Stock: 1136ICM7224RIPL Datasheet

Current PartRFQ

TC7126ACKW

Microchip TechnologyIn Stock: 1093TC7126ACKW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICM7224RIPL is determined by functional equivalence in the following critical parameters:

• Display Driver Function: Both the main part and substitute must support 7-segment LCD display driving capability
• Digit Count: The substitute must support a minimum of 4.6 digits to maintain functional compatibility with 4.5-digit applications
• Supply Voltage Range: The substitute must operate within or encompass the 3V to 6V supply voltage specification
• Operating Temperature Range: The substitute must support the required temperature operating window
• Package Compatibility: Physical mounting type and pin configuration must be compatible with the application circuit

The TC7126ACKW from Microchip Technology meets these substitution criteria as an active, currently manufactured alternative that provides equivalent 7-segment LCD driver functionality.

Parameter Comparison

Engineering Selection Recommendations

The TC7126ACKW represents an active manufacturing alternative to the obsolete ICM7224RIPL. Key considerations for component selection:

Product Status: The ICM7224RIPL is classified as obsolete, whereas the TC7126ACKW maintains active production status through Microchip Technology, ensuring long-term availability and supply chain continuity.

Compliance Posture: The TC7126ACKW achieves ROHS3 compliance, whereas the ICM7224RIPL is RoHS non-compliant. Applications subject to RoHS regulatory requirements must utilize the TC7126ACKW.

Supply Voltage Specification: The ICM7224RIPL operates at 3V to 6V, while the TC7126ACKW requires 9V supply. Circuit design modifications are necessary to accommodate this voltage differential.

Operating Temperature Range: The ICM7224RIPL supports -20°C to 85°C operation; the TC7126ACKW operates from 0°C to 70°C. Applications requiring extended low-temperature operation below 0°C cannot use the TC7126ACKW without design modification.

Mounting Technology: The ICM7224RIPL uses through-hole mounting (40-DIP); the TC7126ACKW uses surface-mount technology (44-QFP). PCB layout and assembly process changes are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the TC7126ACKW directly replace the ICM7224RIPL in existing designs?

A: Direct replacement is not possible without circuit modifications. The TC7126ACKW requires 9V supply voltage versus the ICM7224RIPL's 3V to 6V range, uses surface-mount packaging instead of through-hole, and operates over a narrower temperature range (0°C to 70°C versus -20°C to 85°C). PCB redesign and power supply adjustment are necessary.

Q: What are the key functional similarities between these parts?

A: Both devices are 7-segment LCD drivers. The ICM7224RIPL supports 4.5-digit displays, while the TC7126ACKW supports 4.6-digit displays. Both use LCD display technology and share the same ECCN and HTSUS classifications.

Q: Why is the TC7126ACKW recommended as a substitute despite voltage and package differences?

A: The TC7126ACKW is the manufacturer-recommended substitute based on functional equivalence in 7-segment LCD driver capability. It provides an active, currently manufactured alternative to the obsolete ICM7224RIPL. However, implementation requires design modifications to accommodate the different supply voltage, package type, and operating temperature range.

Q: Are there compliance advantages to using the TC7126ACKW?

A: Yes. The TC7126ACKW is ROHS3 compliant, whereas the ICM7224RIPL is RoHS non-compliant. For applications subject to RoHS directives, the TC7126ACKW is the required choice.

Q: What is the impact of the different digit counts (4.5 vs. 4.6)?

A: The ICM7224RIPL supports 4.5-digit display configurations, while the TC7126ACKW supports 4.6-digit configurations. Applications requiring 4.5-digit display capability must either retain the ICM7224RIPL or redesign the display interface to accommodate the reduced digit count of the TC7126ACKW.