LB1245

0.25 Ordering number:ENN1369C Monolithic Digital IC LB1245 Active-Low Input Fluorescent Display Tube Driver Overview The LB1245 has been designed for interfacing low-level digital devices to fluorescent display tubes. Its 8-circuit independent Darlington output stage is used for digit and segment drivers. Equivalent pull-down resistors are built in ; externally connected resistors to prevent ghosts are no longer required. Output is activated when input voltages are at a low level, making the IC and ideal interface for Nchannel MOS devices. (VDD, VSS of IC can be made common to VDD, VSS of the LB1245.) Features 8-channel independent Darlington driver. Capable of driving digits or segments. Built-in pull-down sink current. Rated at 55V/30mA Package Dimensions unit:mm 3021C-DIP20 [LB1245] 24.0 20 11 1 1.0 10 7.62 6.4 3.3 3.9max 0.51min (3.25) (0.57) 2.54 0.5 1.2 SANYO : DIP20 Specifications Absolute Maximum Ratings at Ta = 25˚C Parameter Maximum supply voltage Output supply voltage Input supply voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VDD max VOUT max VIN max IOUT max Pd max VDD≤VCC–2.0V VIN≥ 0 Topr Tstg Conditions Ratings –0.3 to +55.0 –0.3 to +10.0 –0.3 to VCC VCC–10 to VDD 30 1.13 –20 to +75 –40 to +150 Unit V V V V mA mW ˚C ˚C Allowable Operating Ranges at Ta = 25˚C Parameter Supply voltage Input ON level voltage Input OFF level voltage Symbol VCC VDD VION VIOFF Con...