ICM7212AMIQH-D Equivalent & Substitute Parts

Part Overview

The ICM7212AMIQH-D is a 7-segment LED driver IC manufactured by Analog Devices Inc./Maxim Integrated, designed to drive 4-digit LED displays using BCD interface control. This Surface Mount device operates from 4V to 6V supply voltage with a maximum supply current of 200 mA and supports operating temperatures from -20°C to 85°C. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

ICM7212AMIQH-D

Analog Devices Inc./Maxim IntegratedIn Stock: 824ICM7212AMIQH-D Datasheet

Current PartRFQ

CD74HCT4543E

Harris CorporationIn Stock: 28866CD74HCT4543E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICM7212AMIQH-D is determined by the following critical parameters:

• Display Interface: BCD input control for 7-segment LED decoding
• Display Configuration: 7-segment decoder/driver functionality
• Supply Voltage Range: Operating voltage compatibility (4V ~ 6V for main part)
• Package Type: Physical form factor and pin compatibility
• Mounting Technology: Surface mount versus through-hole considerations

The CD74HCT4543E qualifies as a functional substitute based on shared BCD-to-7-segment decoding capability and compatible supply voltage operation. However, key differences exist in digit capacity, package form factor, and mounting technology that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT4543E provides BCD-to-7-segment decoding functionality compatible with the ICM7212AMIQH-D interface requirements. Both parts are classified as obsolete and RoHS non-compliant, indicating equivalent regulatory and availability status.

Selection between these parts depends on application-specific constraints:

• Multi-digit Display Requirements: The ICM7212AMIQH-D integrates 4-digit driving capability in a single 44-pin package, while the CD74HCT4543E handles single-digit decoding and requires multiple devices for multi-digit applications.

• Mounting Technology: The ICM7212AMIQH-D uses surface mount technology (44-LCC), whereas the CD74HCT4543E employs through-hole DIP packaging. PCB layout and assembly process compatibility must be verified.

• Supply Voltage Compatibility: The CD74HCT4543E operates within a narrower voltage range (4.5V ~ 5.5V) compared to the ICM7212AMIQH-D (4V ~ 6V). Applications requiring operation below 4.5V or above 5.5V may not be compatible with the substitute.

• Current Requirements: The CD74HCT4543E draws significantly lower supply current (8 µA) than the ICM7212AMIQH-D (200 mA), reflecting differences in integrated functionality and output drive capability.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT4543E directly replace the ICM7212AMIQH-D in existing designs?

A: Direct replacement is not possible without circuit redesign. The CD74HCT4543E is a single-digit decoder, while the ICM7212AMIQH-D drives 4 digits. Multi-digit display applications require either four CD74HCT4543E devices or a different multi-digit driver IC. Additionally, the through-hole DIP package differs from the surface mount 44-LCC form factor.

Q: What are the key compatibility criteria for substitution?

A: Substitution is based on BCD interface compatibility, 7-segment decoding functionality, and overlapping supply voltage ranges. The CD74HCT4543E operates within 4.5V ~ 5.5V, which overlaps with the ICM7212AMIQH-D range of 4V ~ 6V. Applications requiring operation below 4.5V are not compatible with the substitute.

Q: Are there package considerations for substitution?

A: Yes. The ICM7212AMIQH-D uses 44-pin surface mount LCC packaging, while the CD74HCT4543E uses 16-pin through-hole DIP packaging. PCB redesign is required for package conversion, including trace routing, via placement, and assembly process modifications.

Q: Do both parts have equivalent regulatory compliance?

A: Both parts are classified as obsolete and RoHS non-compliant. Regulatory status is equivalent between the two devices. Applications requiring RoHS compliance must identify alternative parts meeting current environmental standards.

Q: What is the digit capacity difference between these parts?

A: The ICM7212AMIQH-D integrates 4-digit LED driver capability in a single IC. The CD74HCT4543E decodes and drives a single 7-segment digit. Multi-digit applications using the CD74HCT4543E require one device per digit plus additional multiplexing or parallel control circuitry.