ICM7218AIPI LED Driver 7-Segment 8-Digit Equivalent & Substitute Parts

Part Overview

The ICM7218AIPI is a serial-interface LED driver IC designed for 7-segment, 8-digit display applications. Manufactured by Analog Devices Inc./Maxim Integrated, this 28-DIP through-hole component operates across a 2V to 6V supply range with 250 µA supply current. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

ICM7218AIPI

Analog Devices Inc./Maxim IntegratedIn Stock: 3386ICM7218AIPI Datasheet

Current PartRFQ

ICM7218AIPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1554ICM7218AIPI+ Datasheet

DirectRFQ

ICM7218AIJIR5254

Renesas Electronics CorporationIn Stock: 1533ICM7218AIJIR5254 Datasheet

MFR RecommendedRFQ

ICM7228AIPIZ

Renesas Electronics CorporationIn Stock: 1268ICM7228AIPIZ Datasheet

MFR RecommendedRFQ

ICM7228BIPIZ

Renesas Electronics CorporationIn Stock: 2227ICM7228BIPIZ Datasheet

MFR RecommendedRFQ

ICM7228CIPIZ

Renesas Electronics CorporationIn Stock: 1697ICM7228CIPIZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ICM7218AIPI is determined by the following critical parameters:

• Display Type & Configuration: All substitutes must support LED 7-segment display driving
• Digit Count: All substitutes must support 8-digit operation
• Package & Mounting: All substitutes must use 28-DIP through-hole packaging (0.600", 15.24mm)
• Supply Voltage Range: Substitutes must operate within or encompass the 2V to 6V range
• Supply Current: Substitutes rated at 250 µA or lower are compatible
• Operating Temperature: Substitutes must cover the -20°C to 85°C minimum range
• Interface Type: Serial interface compatibility is required

The substitute parts are grouped into two categories:

Category 1 - Direct Pin-Compatible Substitutes (ICM7218 Series)

• ICM7218AIPI+ (Active status, ROHS3 compliant)
• ICM7218AIJIR5254 (Obsolete status, CerDip package variant)

Category 2 - Functional Equivalents (ICM7228 Series)

• ICM7228AIPIZ (Active status, ROHS3 compliant)
• ICM7228BIPIZ (Active status, ROHS3 compliant)
• ICM7228CIPIZ (Active status, ROHS3 compliant)

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Active Production: ICM7218AIPI+ is the primary substitute. It maintains identical electrical specifications and 28-DIP packaging while offering active product status and ROHS3 compliance. This part provides direct compatibility with existing PCB layouts and firmware implementations.

For Extended Temperature Range Applications: ICM7228BIPIZ extends the operating temperature range to -40°C to 85°C while maintaining 250 µA supply current and 28-DIP packaging. This part is suitable for industrial and automotive environments requiring broader temperature performance.

For Low-Power Applications: ICM7228AIPIZ and ICM7228CIPIZ reduce supply current to 200 µA, offering power efficiency benefits. Both maintain 8-digit 7-segment LED driver functionality and are available in active product status with ROHS3 compliance.

For Voltage-Constrained Systems: All ICM7228 series substitutes operate within 4V to 6V, which is narrower than the original 2V to 6V range. Designs requiring operation below 4V must use ICM7218AIPI+ to maintain the 2V minimum supply voltage specification.

Compliance Considerations: ICM7218AIPI+ and all ICM7228 variants are ROHS3 compliant, addressing regulatory requirements for new production. The original ICM7218AIPI is RoHS non-compliant and should be phased out in favor of compliant alternatives.

Frequently Asked Questions (FAQ)

Q: Can ICM7228 series parts directly replace ICM7218AIPI in existing designs? A: ICM7228 parts maintain identical 7-segment 8-digit LED driver functionality and 28-DIP packaging. However, the minimum supply voltage increases from 2V to 4V. Designs operating below 4V require ICM7218AIPI+ instead. Verify serial interface protocol compatibility with your specific application firmware.

Q: What is the difference between ICM7218AIPI and ICM7218AIPI+? A: Both parts are electrically and mechanically identical with matching specifications. The primary difference is product status: ICM7218AIPI is obsolete while ICM7218AIPI+ is active. ICM7218AIPI+ also carries ROHS3 compliance certification. For new production, ICM7218AIPI+ is the recommended choice.

Q: Why does ICM7218AIJIR5254 show higher supply current (2.5 mA vs. 250 µA)? A: ICM7218AIJIR5254 uses a 28-CerDip package variant rather than standard 28-DIP. The higher current specification reflects different internal design characteristics. This part is obsolete and not recommended for new designs.

Q: Are all substitute parts available in the same packaging? A: ICM7218AIPI, ICM7218AIPI+, and all ICM7228 variants use standard 28-DIP (0.600", 15.24mm) through-hole packaging. ICM7218AIJIR5254 uses 28-CerDip packaging, which has different mechanical and thermal characteristics. Verify PCB footprint compatibility before selection.

Q: Which substitute offers the best long-term availability? A: ICM7228BIPIZ and ICM7228AIPIZ are in active production status with the highest inventory levels (2200 and 1207 units respectively). These parts provide the strongest long-term supply assurance for ongoing production requirements.

Q: Can I use ICM7228 parts in designs originally specified for ICM7218AIPI? A: Functional compatibility exists for 7-segment 8-digit LED display applications. Verify that your design's supply voltage operates within the 4V to 6V range required by ICM7228 variants. Serial interface protocol must be confirmed compatible with your firmware implementation.