Overview

The LC7940YD and LC7941YD are segment driver ICs for driving large, dot–matrix LCD displays. They read 4–bit parallel or serial input, display data from a controller into an 80–bit latch, and then generate LCD drive signals corresponding to that data.

Features

• 80 built–in LCD display drive circuits

• 1/8 to l/128display duty cycle

• Serial or 4–bit parallel data input

• Chip disable for low power dissipation for large–sized panels

• Bias supply voltags can be supplied externally

• Operating supply voltage and ambient temperature

- 2.7 to 5.5 V logic supply ( VDD) at Ta = –20 to +85°C

- 8 to 20V LCD supply (VDD –VEE) at Ta = –20 to +85 °C

• CMOS process

• 100–pin flat plastic package