LB1290

The LB1290 has been designed for interfacing between low level digital devices and fluorescent display tubes Its 8-channel independent Darlington output stage is used for digit or segment drivers. Also, with pull-dow equivalent resistors, no externally connected resistors are required for ghost prevention. When the input voltage is at a high level, the output gets activated.

The features of LB1290 can be summarized as (1)8-channel independent darlington driver; (2)capable of driving digits or segments; (3)on-chip sink current circuit for pull-down; (4)55 V/30 mA rating.

The absolute maximum ratings of LB1290 are (1)maximum power supply voltage VCC max: -0.3~+550 V; (2)output supply voltage VOUT: -0.3~VCC V; (3)input supply voltage VIN: -0.3 ~+200V; (4)maximum output current IOUT:30mA; (5)allowable power dissipation Pd max :113W; (6)operating ambient temperature Topr: -20 +75°C; (7)storage ambient temperature Tstg: -40 +150°C. And the allowable operating conditions are supply voltage VCC: 4.75~55.0V; input level voltage VIH:  IOUT = -30 mA 2.6 ~20.0 V; input L level voltage VIL IOUT <-30 pA :-0.3 ~+ 0.3V.