Catalyst adds to I/O bus expander line with 16-bit I2C LED dimmer

Oct. 31, 2007
Date Announced: 31 Oct 2007 SANTA CLARA, Calif., October 31, 2007 – Catalyst Semiconductor, Inc. (NASDAQ:CATS) a supplier of analog, mixed-signal and non-volatile memory semiconductors, has expanded its line of bus products with the CAT9532, a 16-bit LED driver with dimmer and blinker control functions, which can also be used as a general purpose I/O expander. A drop-in replacement for the PCA9532, the CAT9532 can drive 16 LEDs directly in parallel and provides LED dimming in 256 brightness steps for backlighting and RGB color mixing. The device can also turn each LED ON, OFF or blinking at one of two programmable rates for sensor control, power-switch, push-button and status indicator light applications with I2C or SMBus interfaces. Product Features- 16 LED drivers with dimming control- 256 brightness steps- 16 open drain outputs drive 25mA each- Two selectable, programmable blink rates: Frequency: 0.593Hz to 153Hz Duty Cycle: 0% to 99.6%- I/Os can be used as general purpose I/Os- 400kHz I2C bus compatible- Packaging: 24-lead SOIC, TSSOP and 24-pad TQFN (4 x 4mm)Price and AvailabilityThe CAT9532 LED driver/blinkers are priced at $0.75 each in 10,000 piece quantities. Samples are available now. Projected lead-time for production quantities is currently 6 to 8 weeks ARO.

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