SX1508BIULTRT

SX1508B is a world’s lowest voltage level shifting GPIO with LED driver and keypad engine. This complete ultra-low voltage General Purpose parallel Input/Output (GPIO) expander is ideal for low power handheld battery powered equipment. This family of GPIOs comes in 8-, 16channel configuration and allows easy serial expansion of I/O through a standard 400KHz I²C interface. GPIO devices can provide additional control and monitoring when the microcontroller or chipset has insufficient I/O ports, or in systems where serial communication and control from a remote location is advantageous. This can also act as a level shifter to connect a microcontroller running at one voltage level to a component running at a different voltage level, thus eliminating the need for extra level translating circuits. Typical application includes cell phones, PDAs, MP3 players, digital camera, notebooks, GPS units, any battery powered equipment.

• 1.2V to 3.6V low operating voltage with dual independent I/O rails (VCC1, VCC2), 8 I/Os
• Enable direct level shifting between I/O banks and host controller
• 5.5V tolerant I/Os, up to 15mA output sink on all I/Os (no total sink current limit)
• Integrated LED driver for enhanced lighting, intensity control (256-step PWM)
• Blink control (224 on/off values), breathing control (224 fade in/out values)
• Blink control (224 on/off values), breathing control (224 fade in/out values)
• Support up to 8x8 matrix (64 Keys), configurable input debounce
• 8/16 channels of true Bi-directional style I/O, programmable pull-up/pull-down
• Push/pull or open-drain outputs, programmable polarity
• QFN-UT-20 package, operating temperature range from -40°C to +85°C