MAX7219
PRODUCTIONSerially Interfaced, 8-Digit, LED Display Drivers
- Part Models
- 7
- 1ku List Price
- Starting From $7.37
Part Details
- 10MHz Serial Interface
- Individual LED Segment Control
- Decode/No-Decode Digit Selection
- 150µA Low-Power Shutdown (Data Retained)
- Digital and Analog Brightness Control
- Display Blanked on Power-Up
- Drive Common-Cathode LED Display
- Slew-Rate Limited Segment Drivers for Lower EMI (MAX7221)
- SPI, QSPI, MICROWIRE Serial Interface (MAX7221)
- 24-Pin DIP and SO Packages
The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7221 is compatible with SPI™, QSPI™, and MICROWIRE™, and has slew-rate-limited segment drivers to reduce EMI.
A convenient 4-wire serial interface connects to all common µPs. Individual digits may be addressed and updated without rewriting the entire display. The MAX7219/MAX7221 also allow the user to select code-B decoding or no-decode for each digit.
The devices include a 150µA low-power shutdown mode, analog and digital brightness control, a scan-limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.
For applications requiring 3V operation or segment blinking, refer to the MAX6951 data sheet.
Applications
- Bar Graph Displays
- Industrial Controllers
- LED Matrix Displays
- Panel Meters
Documentation
Data Sheet 1
Reliability Data 1
Application Note 1
Technical Articles 6
3rd Party Solutions 6
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX7219C/D | 0-CHIP-N/A | ||
| MAX7219CNG+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| MAX7219CWG+ | Small-Outline IC, Wide (0.3in) | ||
| MAX7219CWG+T | Small-Outline IC, Wide (0.3in) | ||
| MAX7219ENG+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| MAX7219EWG+ | Small-Outline IC, Wide (0.3in) | ||
| MAX7219EWG+T | Small-Outline IC, Wide (0.3in) |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Display Driver Electronics 9 | ||
| MAX6950 | PRODUCTION | Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers |
| MAX6951 | PRODUCTION | Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers |
| MAX6952 | PRODUCTION | 4-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver |
| MAX6954 | PRODUCTION | 4-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan |
| MAX6955 | PRODUCTION | 2-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan |
| MAX6956 | PRODUCTION | 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander |
| MAX6957 | PRODUCTION | 4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and 28-Port LED Display Driver and I/O Expander |
| MAX6958 | PRODUCTION | 2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan |
| MAX6959 | PRODUCTION | 2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan |
| Product 1 | ||
| MAX6953 | 2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver | |
Reference Designs
MAX7219 Display Driver Shield
Part Used
Design & Integration Tools
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