SN75581

The SN75581 is a monolithic BIDFET integrated circuit designed to drive a dot matrix or segmented display.The output characteristics of this driver make it compatible to several display types including VF and DC plasma displays.

All device SN75581 inputs are diode-clamped p-n-p input and,when left open,assume a high-logic level.The norminal input threshold is 1.5 volts.Outputs are open-source DMOS transistors for excellent high-voltage characteristics and reliability.

The device consists of a 7-bit shift register,seven latches,and seven output AND gates.Serial data is entered into the shift register on the low-to-high transition of the clock input.When the latch enable input is high,data is transferred from the shift registers to the latch output.When latch enable makes a high-to-low transition with the clock input high,the shift register is cleared.Taking the output enable input high enables all Q outputs simultaneously.The serial output is not affected by the output enable input.The SN75581 is characterized for operation from 0 to 70.

The SN75581 has 8 features.The first one is each device drives 7 lines.The second one is 150-v output voltage swing capability.The third one is TTL compatible input.The fourth one is latches on all driver outputs.The fifth one is high-speed serially shifted data input.The sixth one is output enable/disable function.The seventh one is serial data output for cascade operation.The eighth one is shift register has synchronous clear function.