What the ICM7211AIJL is and where it fits
The Intersil ICM7211AIJL is a BCD-input LCD decoder/driver designed to drive a 4-digit, 7-segment liquid crystal display. It accepts a 4-bit BCD input and generates the segment drive signals directly, eliminating the need for a separate decoder or microcontroller firmware overhead for display multiplexing. The part draws only 10 µA of supply current, making it a strong fit for battery-powered instruments, panel meters, or any application where a low-power numeric readout is needed. The supply range of 3V to 6V covers common battery chemistries (3V lithium coin cell, 3.6V NiMH, 5V regulated) without an extra LDO.
Package and mounting — what the 44-PLCC means for your board
The ICM7211AIJL comes in a 44-lead PLCC package with J-leads (44-LCC (J-Lead)), body size 16.59x16.59 mm. This is a surface-mount package, but the J-lead form requires a specific solder-paste stencil and reflow profile — not the same as a gull-wing QFP. The footprint is standard across many 44-PLCC devices, so board layout reuse is possible if you have other PLCC parts.
Lifecycle and sourcing — still active, no end-of-life concern
This means you can design it into new products without worrying about a last-time-buy window closing. The part is RoHS non-compliant, so if your assembly line requires RoHS, you will need to verify the exemption or look for a lead-free variant.