IC CD4543 BCD-to-7-Segment Decoder Driver

BCD to 7 Segment Decoder Driver

Features

• Display blanking of all illegal input combinations
• Latch storage of code
• Capability of driving two low power TTL loads, two HTL loads, or one low power Schottky load over the full rated-temperature range
• Direct LCD driving capability

Overview

The CD4543B is a BCD-to-seven segment latch/decoder/driver designed primarily for liquid-crystal display (LCD) applications. It is also capable of driving light emitting diode (LED), incandescent, gas-discharge, and fluorescent displays. When the CD4543B is used for LCD applications, a square wave must be applied to the PHASE input and the backplane of the LCD device. For LED applications, a logic 1 is required at the PHASE input for common-cathode devices; a logic 0 is required for common-anode devices.