MAX6957AAX+ by Analog Devices

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

Status: Active
Series: MAX6957
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The MAX6957 compact, serial-interfaced LED display driver general-purpose I/O (GPIO) peripheral provides 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 constantcurrent 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 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 MAX6957 is controlled through an SPI-compatible 4-wire serial interface. The MAX6957AAX and MAX6957ATL have 28 ports and are available in 36-pin SSOP and 40-pin TQFN (6mm x 6mm) packages, respectively. The MAX6957AAI and MAX6957ANI have 20 ports and are available in 28-pin SSOP and 28-pin DIP packages, respectively. For a 2-wire interfaced version, refer to the MAX6956 data sheet. For a lower cost pin-compatible port expander without the constant-current LED drive capability, refer to the MAX7301 data sheet.

Prices starting from US$6.11


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$6.11
198
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Logo for element14 element14 US$9.02
78
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Features

High-Speed 26MHz SPI-/QSPI-™/MICROWIRE®-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 SPI 26Mbit
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) 5.37


MAX6957AAX+ Semiconductors - ICs by Analog Devices

LED DISPLAY DRIVER SSOP-36

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

Specifications

Device Topology -
Input Voltage Min 2.5V
Input Voltage Max 5.5V
Output Voltage Max -
Output Current Max 28mA
Switching Frequency -
No. of Outputs 28Outputs
IC Mounting SMD
Driver Case Style SSOP
No. of Pins 36Pins
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

Led Display Driver, Ssop-36 | Newark Electronics
LED DISPLAY DRIVER, SSOP-36 | Farnell

Frequently Asked Questions

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Is the MAX6957AAX+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, Farnell and element14 have stock available or on a lead time for MAX6957AAX+ .

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