MAX6956AAI+ by Analog Devices

2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander


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.

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Prices starting from US$4.93

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Features

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
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

Specifications

LCD or LED LED
Display Type Common Anode
Interface Serial 2-Wire 400kbit
Digits or Char. 28-Segment
Output Format Any digit type
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 5.5
Package/Pins SSOP/28SSOP/36TQFN/40
BudgetaryPrice (See Notes) 4.98


MAX6956AAI+ Semiconductors - ICs by Analog Devices

LED DISPLAY DRIVER I2C SSOP-28

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Topology -
Input Voltage Min 2.5V
Input Voltage Max 5.5V
Output Voltage Max -
Output Current Max 24mA
Switching Frequency 400kHz
No. of Outputs 20Outputs
IC Mounting SMD
Driver Case Style SSOP
No. of Pins 28Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

2-Wire-Interfaced, 2.5V to 5.5 | Analog Devices
Led Display Driver, I2C, Ssop-28 | Newark Electronics
LED DISPLAY DRIVER, I2C, SSOP-28 | element14
Maxim,MAX6956AAI+ | RS

Frequently Asked Questions

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Is the MAX6956AAI+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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