DESCRIPTION
   The CAT5409 is four Digitally Programmable Potentiometers (DPP™) integrated with control logic and 16 bytes of NVRAM memory.

FEATURES
◾ Four linear taper digitally programmable
   potentiometers
◾ 64 resistor taps per potentiometer
◾ End to end resistance 2.5kΩ, 10kΩ, 50kΩ or
   100kΩ
◾ I²C interface
◾ Low wiper resistance, typically 80Ω
◾ Four non-volatile wiper settings for each
   potentiometer
◾ Recall of saved wiper settings at power-up
◾ 2.5 to 6.0 volt operation
◾ Standby current less than 1µA
◾ 1,000,000 nonvolatile WRITE cycles
◾ 100 year nonvolatile memory data retention
◾ 24-lead SOIC and 24-lead TSSOP
◾ Write protection for data register