Xinluda Information Technology Co., Ltd Electronic Parts
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The XD7221 from Xinluda is a compact, serial input/output common-cathode LED display driver that connects microprocessors to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or up to 64 individual LEDs. It belongs to Xinluda’s 7219/7221 family and is functionally comparable to the industry-standard MAX7221. The “XD” prefix denotes the through-hole DIP-24 package (the surface-mount SOP-24 version is offered as the XL7221).
Integrated on-chip are a BCD Code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8×8 static RAM that stores each digit. The XD7221 features a serial interface that is fully compatible with SPI, QSPI and MICROWIRE, and uses slew-rate-limited segment drivers to reduce EMI. Only one external resistor is required to set the segment current for all LEDs.
The XD7221 is a hard-to-find part with little to no authorized-distributor stock. Pacific Component Xchange is an independent distributor specializing in sourcing scarce and obsolete power-management ICs, display drivers and optocouplers. Whether you need a single tube for a production run or ongoing supply for a legacy design, our global sourcing network helps you secure authentic parts with traceability and quality verification.
We support obsolete and end-of-life procurement, counterfeit-mitigation inspection, and worldwide shipping. Request a quote (RFQ) today and our team will respond with current availability, lead time and pricing for the XD7221.
The XD7221 is a serially-interfaced, 8-digit common-cathode LED display driver from Xinluda. It connects a microprocessor to 7-segment numeric displays of up to 8 digits, bar-graph displays, or up to 64 individual LEDs, and is functionally comparable to the MAX7221.
Both are part of Xinluda's 8-digit LED display driver family. The 7221 (XD7221) uses a serial interface that is compatible with SPI, QSPI and MICROWIRE and has slew-rate-limited segment drivers for reduced EMI, whereas the 7219 uses the older 7219-style interface.
The XD7221 is supplied in a 24-pin DIP (DIP-24) through-hole package. Xinluda also offers a surface-mount SOP-24 version under the XL7221 part number.
The device operates from a 4 V to 5.5 V supply and accepts a serial clock input at up to a 10 MHz maximum rate.
A single external resistor sets the segment current for all LEDs, and brightness can be adjusted using both digital control (via the on-chip register) and analog control. A scan-limit register lets you display from 1 to 8 digits.
Yes. The XD7221 is a request-for-quote (RFQ) item with limited authorized-distributor availability. Pacific Component Xchange specializes in sourcing hard-to-find and obsolete parts. Submit an RFQ for current availability, lead time and pricing.
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