ICM7218DIQI

Display Drivers Overview

The ICM7218DIQI is an obsolete LED display driver manufactured by Analog Devices Inc./Maxim Integrated. It supports 8-digit, 7-segment multiplexed displays with a total of 64 segments. The device operates on a parallel interface within a 28-PLCC package. Electrical specifications include a supply voltage range of 2V to 6V and a maximum supply current of 250 µA. The power dissipation rating is 800 mW. The component functions across a temperature range of -20°C to +85°C.

Display Drivers Feature Summary

• Supports direct driving of 8-digit, 7-segment LED displays without external decoding logic
• Integrates internal RAM for data storage and built-in oscillator circuitry
• Utilizes a parallel data interface for straightforward microcontroller connection

Display Drivers Applications

• Digital readout systems requiring multi-digit numeric display
• Industrial control panels with LED status indicators
• Consumer electronics utilizing common-cathode or common-anode 7-segment modules

Display Drivers Procurement Notes

This part number is officially listed as obsolete and no longer in production. Verification of availability should focus on surplus distributors or secondary market channels rather than standard manufacturer inventory. Buyers must confirm the specific revision and physical condition of available units, as stock levels fluctuate rapidly. Cross-reference with the designated replacement ICM7218DIQI+ is recommended for new designs.

Display Drivers Selection Notes

Designers should note that this component utilizes a 28-PLCC surface-mount package, which requires specific footprint considerations during PCB layout. The parallel interface demands multiple GPIO pins from the host controller compared to serial alternatives. While the device supports low-voltage operation down to 2V, system designers must ensure the microcontroller logic levels are compatible with the driver's input thresholds to guarantee reliable signal transmission.

Display Drivers Part Context

The ICM7218 series represents a classic line of CMOS LED decoder drivers originally developed by Intersil and later maintained by Maxim Integrated. These chips were widely adopted in embedded systems for their ability to simplify display interfacing by combining decoding, latching, and driving capabilities into a single integrated circuit. The DIQI variant specifically denotes the plastic leaded chip carrier package configuration within this family.

Display Drivers Replacement Considerations

• ICM7218DIQI+