Found 4 alternatives for AD8509ARU-REEL by Rochester Electronics, LLC. Pmic Display Drivers — 48-TFSOP (0.240", 6.10mm Width).
IC MUX LCD DVR 11CH 3.3V 48TSSOP
IC DRVR 64 GREY SCALE 48TSSOP
IC AMP BUFFER 9 CHANNEL 48-TSSOP
IC AMP BUFFER 9 CHANNEL 48-TSSOP