XD7221 – LED Display Driver – Xinluda

The Xinluda XD7221 is a serially-interfaced, 8-digit common-cathode LED display driver in a DIP-24 package, compatible with SPI, QSPI and MICROWIRE interfaces. It is a MAX7221-class device available for RFQ at Pacific Component Xchange.

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.

Key Features

• Serially interfaced 8-digit common-cathode LED display driver (8 segment x 8 digit)
• SPI, QSPI and MICROWIRE compatible serial interface
• Serial clock input rated to a 10 MHz maximum rate
• Supply voltage range of 4 V to 5.5 V
• On-chip BCD Code-B decoder plus no-decode operation (per-digit decode/no-decode selection)
• 8×8 static RAM stores each digit
• Single external resistor sets segment current for all LEDs
• Digital and analog brightness control
• Scan-limit register to display from 1 to 8 digits
• 150 uA low-power shutdown mode with data retention
• Built-in display-test mode
• Slew-rate-limited segment drivers for reduced EMI
• Operating temperature range of -40 C to +85 C
• DIP-24 package; RoHS compliant

Applications

• 7-segment numeric LED display panels (up to 8 digits)
• Bar-graph and panel-meter displays
• Industrial controllers and instrumentation
• LED dot-matrix display modules
• Embedded and microprocessor-driven display systems

Why Source XD7221 from Pacific Component Xchange

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.