Texas Instruments has introduced the TLC59282, a 16-Channel Constant Current LED Driver with 4-Channel Grouped Delay. According to the datasheet, this 24-pin SSOP device allows control of each channel individually controlled via a simple serial communications protocol that is compatible with 3.3 V or 5 V CMOS logic levels, depending on the operating VCC.
Once the serial data buffer is loaded, a rising edge on LATCH transfers the data to the LEDx outputs. The BLANK pin can be used to turn off all OUTn outputs during power-on and output data latching to prevent unwanted image displays during these times. The constant-current value of all 16 channels is set by a single external resistor. Multiple TLC59282s can be cascaded together (as diagrammed above) to control additional LEDs from the same processor.
Contemplated uses include video displays, message boards and illumination.