CAT5259 Quad Digital Potentiometer (POT) with 256 Taps 2 and I C Interface CAT5259 MARKING DIAGRAMS (SOIC24) (TSSOP 24) L3B RLB CAT5259WT CAT5259YT RRYMXXXX 3YMXXX L = Assembly Location R = Resistance 3 = Lead Finish Matte-Tin 4 = 50 K B = Product Revision (Fixed as B) 5 = 100 K CAT5259W = Device Code L = Assembly Location T = Temperature Range (I = Industrial) B = Product Revision (Fixed as B) = Dash CAT5259Y = Device Code RR = Resistance T = Temperature Range (I = Industrial) 50 = 50 K 3 = Lead Finish Matte-Tin 00 = 100 K Y = Production Year (Last Digit) Y = Production Year (Last Digit) M = Production Month (19, O, N, D) M = Production Month (19, O, N, D) XXX = Last Three Digits of Assembly Lot Number XXXX = Last Four Digits of Assembly Lot Number R R R R H0 H1 H2 H3 WIPER SCL 2 I C BUS CONTROL R SDA W0 INTERFACE REGISTERS R W1 WP A 0 NONVOLATILE R CONTROL W2 A 1 DATA A LOGIC 2 REGISTERS A 3 R W3 R R R R L0 L1 L2 L3 Figure 1. Functional Diagram