Mixed Signal/Analog
Catalyst Semiconductor Launches Lower Power 8-Bit I2C/SMBus I/O Expander
Catalyst Semiconductor has expanded its line of bus products with the CAT9534, an 8-bit general purpose input/output (GPIO) expander for I2C and SMBus-based systems. The CAT9534 is pin-for-pin and functionally compatible with Catalyst’s industry-standard CAT9554, but operates at 100 times lower standby power, making it the perfect choice for battery-powered and “green” systems applications.
WithThe CAT9534 consists of eight ports, which power up as inputs and each port can be configured as an input or output by writing to a register. An internal power-on reset eliminates glitches on power-up. Each I/O port is 5V input tolerant, with a high current I/O drive sink of up to 25mA and an I/O source of up to 10mA, maximum. Additionally, each I/O port is compatible with logic thresholds of 2.5V, 3.3V and 5V.
Pricing for the CAT9534 I/O bus expander is $0.83 each, in 10,000 piece quantities. Samples are available now. Projected lead-time for production quantities is currently 6 to 8 weeks ARO.