5811

Designed primarily for use with vacuum-fluorescent displays, the UCN5811A smart power BiMOS II driver features low-output saturation voltages and high output switching speed. These UCN5811A contain CMOS shift registers, data latches, and control circuitry, and bipolar high-speed sourcing outputs with DMOS active pull-down circuitry. The high-speed shift register and data latches allow direct interface with microprocessor-based systems. A CMOS serial data output of UCN5811A enables cascade connections in applications requiring additional drive lines.

The UCN5811A features 60 V and -40 mA output ratings, allowing it to be used in many other peripheral power driver applications. It can be used as an improved replacement tor the SN75512B. The Allegro devices do not require special power-up sequencing.

The UCN5811A has been designed with BiMOS II logic for improved data entry rates. With a 5 V supply, it will operate to at least 3.3 MHz. At 12 V, higher speeds are possible. Use of this UCN5811A with TTL may require the use of appropriate pull-up resistors to ensure a proper input logic high.

This UCN5811A is supplied in a 20-pin plastic dual in-line package. It can be operated over the ambient temperature range of -20°C to +85°C. Copper lead frames and low output saturation voltages of UCN5811A allow all outputs to be operated at 25 mA continuously at ambient temperatures of up to 76°C.