8-digit LED driver with a 4-wire serial hookup
The Maxim Integrated MAX7221EWG+T is a serial-interfaced LED display driver that handles up to 8 digits of 7-segment displays, each with a decimal point. It takes the multiplexing and current-limiting overhead off the host controller — you send digit and segment data over a 4-wire serial link, and the chip drives the common-cathode LED matrix directly. The 24-SOIC package keeps the footprint manageable for panel-mount or through-hole display boards.
330 mA supply budget at 4V to 5.5V
The supply current is rated at 330 mA, which covers the driver's own consumption plus the segment current for all eight digits lit. The 4V to 5.5V range means it runs off a regulated 5V rail comfortably — no need for a separate LED supply. If your board already carries a 5V bus for logic or analog, this driver taps straight in.
Active lifecycle, no LTB worry
The ROHS3 compliance is standard for lead-free assembly lines.