MAX6956
PRODUCTION2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander
- Part Models
- 8
- 1ku List Price
- Starting From $5.86
Part Details
- 400kbps I²C-Compatible Serial Interface
- 2.5V to 5.5V Operation
- -40°C to +125°C Temperature Range
- 20 or 28 I/O Ports, Each Configurable as
- Constant-Current LED Driver
- Push-Pull Logic Output
- Schmitt Logic Input
- Schmitt Logic Input with Internal Pullup
- 11µA (max) Shutdown Current
- 16-Step Individually Programmable Current Control for Each LED
- Logic Transition Detection for Seven I/O Ports
The MAX6956 compact, serial-interfaced LED display driver/I/O expander provide microprocessors with up to 28 ports. Each port is individually user configurable to either a logic input, logic output, or common-anode (CA) LED constant-current segment driver. Each port configured as an LED segment driver behaves as a digitally controlled constant-current sink, with 16 equal current steps from 1.5mA to 24mA. The LED drivers are suitable for both discrete LEDs and CA numeric and alphanumeric LED digits.
Each port configured as a general-purpose I/O (GPIO) can be either a push-pull logic output capable of sinking 10mA and sourcing 4.5mA, or a Schmitt logic input with optional internal pullup. Seven ports feature configurable transition detection logic, which generates an interrupt upon change of port logic level. The MAX6956 is controlled through an I²C-compatible 2-wire serial interface, and uses four-level logic to allow 16 I²C addresses from only 2 select pins.
The MAX6956AAX and MAX6956ATL have 28 ports and are available in 36-pin SSOP and 40-pin thin QFN packages, respectively. The MAX6956AAI and MAX6956ANI have 20 ports and are available in 28-pin SSOP and 28-pin DIP packages, respectively.
For an SPI-interfaced version, refer to the MAX6957 data sheet. For a lower cost pin-compatible port expander without the constant-current LED drive capability, refer to the MAX7300 data sheet.
Applications
- Automotive
- Bar Graph Displays
- Industrial Controllers
- Panel Meters
- Set-Top Boxes
- System Monitoring
- White Goods
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Application Note 1
Design Note 1
Technical Articles 4
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 |
|---|---|---|---|
| MAX6956AAI+ | 28-SSOP-5.3_MM | ||
| MAX6956AAI+T | 28-SSOP-5.3_MM | ||
| MAX6956AAX+ | 36-SSOP_W-7.62_MM | ||
| MAX6956AAX+T | 36-SSOP_W-7.62_MM | ||
| MAX6956AAX/V+ | 36-SSOP_W-7.62_MM | ||
| MAX6956AAX/V+T | 36-SSOP_W-7.62_MM | ||
| MAX6956ATL+ | 40-LFCSP-6X6X0.75 | ||
| MAX6956ATL+T | 40-LFCSP-6X6X0.75 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
Mar 1, 2016 - 1618 ASSEMBLY |
||
| MAX6956AAX+ | PRODUCTION | |
| MAX6956AAX+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Direct from Battery LED/GPIO Drivers 2 | ||
| MAX7317 | PRODUCTION | 10-Port SPI-Interfaced I/O Expander with Overvoltage and Hot-Insertion Protection |
| MAX7318 | PRODUCTION | 2-Wire-Interfaced, 16-Bit, I/O Port Expander with Interrupt and Hot-Insertion Protection |
| Display Driver Electronics 10 | ||
| 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 |
| 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 |
| MAX7219 | PRODUCTION | Serially Interfaced, 8-Digit, LED Display Drivers |
| MAX7221 | PRODUCTION | Serially Interfaced, 8-Digit, LED Display Drivers |
| Product 1 | ||
| MAX6953 | 2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver | |
Tools & Simulations
Software Development 1
Evaluation Kits
Evaluation Kit for the MAX6956
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