CD4543B - 用于液晶显示的 CMOS BCD 至 7 段锁存器/解码器/驱动器

CD4543B是TI德州仪器公司的一款解码器/编码器/多路复用器产品，CD4543B是用于液晶显示的 CMOS BCD 至 7 段锁存器/解码器/驱动器，本站介绍了CD4543B的封装应用图解、特点和优点、功能等，并给出了与CD4543B相关的TI元器件型号供参考。

CD4543B - 用于液晶显示的 CMOS BCD 至 7 段锁存器/解码器/驱动器 - 解码器/编码器/多路复用器 - 特殊逻辑 - 德州仪器

产品描述

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. This device is functionally similar to and serves as direct replacement for the CD4056B when pin 7 is connected to VSS. It differs from the CD4056B in that it has a display blanking capability instead of a level-shifting function and requires only one power supply. When the CD4056B is used in the level shifting mode, two power supplies are required. 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 (see truth table).

The CD4543B is supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

产品特性

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
Pin-for-pin replacement for the CD4056B (with pin 7 tied to VSS)
Direct LED driving capability
100% tested for quiescent current at 20 V
Maximum input current of 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
Noise margin (full package-temperature range) = 1 V at VDD = 5 V 2 V at VDD = 10 V 2.5 V at VDD = 15 V
5-V, 10-V, and 15-V parametric ratings
Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
Applications:
- Instrument display driver
- Dashboard display driver
- Computer/calculator display driver
- Timing device driver (clocks, watches, timers)

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