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Analog Devices MAX7221EWG+T — Logic ICs

MAX7221EWG+T LED Driver, 8-Digit 7-Segment, 24-SOIC

MPNMAX7221EWG+T
End of Life

Maxim Integrated MAX7221EWG+T, 8-Digit LED Display Driver, 7 Segment + DP, 4-Wire Serial Interface, 4V to 5.5V Supply, 330 mA Supply Current, -40°C to 85°C, 24-SOIC Surface Mount Package.

$14.78Ref. price · indicative, final on quote
Packaging24-SOIC (0.295", 7.50mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX7221EWG+T specifications
ParameterValue
Display typeLED
MountingSurface Mount
Voltage4V ~ 5.5V
Current - supply330 mA
Interface4-Wire Serial
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Configuration7 Segment + DP
Case24-SOIC (0.295\", 7.50mm Width)
Digits or characters8 Digits

Product details

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.

Frequently asked questions

What is the replacement for MAX7221EWG+T?

There is no direct replacement announced because this part is still active. The base MAX7221 and the MAX7221EWG+T are the same silicon — the suffix just denotes the tape-and-reel packaging variant. If you need a second source, look at the pin-compatible MAX7219 family (same function, different segment-current scaling), but verify the register map difference in your firmware.