MAX6974, MAX6975 24-Output PWM LED Drivers For Message Boards

The MAX6974 MAX6975 precision current-sinking, 24-output PWM LED Drivers drive red, green, and blue LEDs for full-color graphic message boards and Video Displays Each output has an individual 12-bit MAX6974 or 14-bit MAX6975 PWM-intensity (hue) control and 7-bit MAX6974 or 5-bit MAX6975 global PWM intensity (luminance) control. The MAX6974 MAX6975 feature a high-speed, fully buffered cascadable serial Interface open-circuit LED fault detection circuitry, as well as a watchdog Timer
The driver has three banks of eight outputs, with each bank intended to drive a different color in RGB applications. The full-scale current for each bank of eight outputs is adjustable from 6mA to 30mA in 256 steps (0.3125% per step) to calibrate each color.
The MAX6974 MAX6975 CAN optionally multiplex by using outputs active-low MUX0 and active-low MUX1, which each drive an external PNP Transistor Multiplexing doubles the MAX6974 MAX6975 drive capability to 48 LEDs
The MAX6974 MAX6975 operate from a 3.0V to 3.6V power supply. The LED power supply CAN range from 3V to 7V. The LED Drivers require only 0.8V headroom above the LEDs' forward-voltage drop. Using a separate LED supply voltage for each LED minimizes power consumption.
The serial Interface uses differential signaling for the high-speed Clock and data signals to reduce EMI and improve signal integrity. The MAX6974 MAX6975 Buffer all Interface signals to simplify cascading devices in modules that use a large number of drivers.
An internal watchdog Timer when enabled, automatically clears the pixel-data Registers and blanks the Display if any of the signal inputs fail to toggle within 40ms.
The MAX6974 MAX6975 are available in 40-pin TQFN packages and operate over the -40C to +125C temperature range.
Refer to the MAX6972 MAX6973 data sheet for a 16-output, 11mA to 55mA software-compatible device.
By Maxim Integrated Products
MAX6975 's PackagesMAX6975 's pdf datasheet
MAX6975ATLT QFN
MAX6975ATL QFN
MAX6975ATL-T QFN




MAX6975 Pinout, Pinouts
MAX6975 pinout,Pin out
This is one package pinout of MAX6975,If you need more pinouts please download MAX6975's pdf datasheet.

MAX6975 Application circuits
MAX6975 circuits
This is one application circuit of MAX6975,If you need more circuits,please download MAX6975's pdf datasheet.


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