CAT5120, CAT5121, CAT5122 16tap Digital Potentiometers (POTs) with 2wire Interface CAT5120, CAT5121, CAT5122 H V DD GND CS W U/D L Figure 1. Functional Diagram Table 1. PIN DESCRIPTIONS Name Description V Power Supply DD GND Ground U/D Up/Down Control Input. With CS low, a low-to-high transition increments or decrements the wiper position. CS Chip Select Input. A high-to-low CS transition determines the mode: increment if U/D is high, or decrement if U/D is low. L Low Terminal of Resistor W Wiper Terminal of Resistor H High Terminal of Resistor Table 2. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units V to GND 0.3 to +6 V DD All Other Pins to GND 0.3 to (V + 0.3) V DD Input and Output Latch-up Immunity 200 mA Maximum Continuous Current into H, L and W mA 50 k 1.3 10 k 1.3 Continuous Power Dissipation (T = +70C) mW A 5-pin SC70 (Note 1) 247 6-pin SC70 (Note 1) 245 Operating Temperature Range 40 to +85 C Junction Temperature +150 C Storage Temperature Range 65 to +150 C Soldering Temperature (soldering, 10 s) +300 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. Derate 3.1 mW/C above T = +70C A