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MAX6956 - 2-Wire-Interfaced / 2.5V to 5.5V / 20-Port or 28-Port LED Display Driver and I/O Expander

General Description

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.

Key Features

  • o 400kbps I C-Compatible Serial Interface o 2.5V to 5.5V Operation o -40°C to +125°C Temperature Range o 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 o 11µA (max) Shutdown Current o 16-Step Individually Programmable Current Control for Each LED o Logic Transition Detection for Seven I/O Ports MAX6956 Ordering Information PART MAX6956ANI MAX6956AAI MAX6956AAX MAX6956ATL TEMP RANGE -40°C t.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2414; Rev 2; 11/03 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port LED Display Driver and I/O Expander General Description 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.