SN74LS247 - BCD 到 7 段解码器/驱动器

SN74LS247是TI德州仪器公司的一款解码器/编码器/多路复用器产品，SN74LS247是BCD 到 7 段解码器/驱动器，本站介绍了SN74LS247的封装应用图解、特点和优点、功能等，并给出了与SN74LS247相关的TI元器件型号供参考。

SN74LS247 - BCD 到 7 段解码器/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

The '246 and '247 are electrically and functionally identical to the SN5446A/SN7446A, and SN5447A/SN7447A respectively, and have the same pin assignments as their equivalents. The 'LS247 and 'LS248 are electrically and functionally identical to the SN54LS47/SN74LS47 and SN54LS48/SN74LS48, respectively, and have the same pin assignments as their equivalents. They can be used interchangeably in present or future designs to offer designers a choice between two indicator fonts. The '46A, '47A, 'LS47, and 'LS48 compose the 6 and 9 the without tails and the '246, '247, 'LS247, and 'LS248 compose the and the with tails. Composition of all other characters, including display patterns for BCD inputs above nine, is identical. The '246, '247, and 'LS247 feature active-low outputs designed for driving indicators directly, and the 'LS248 features active-high outputs for driving lamp buffers. All of the circuits have full ripple-blanking input/output controls and a lamp test input. Segment identification and resultant displays are shown below. Display patterns for BCD input counts above 9 are unique symbols to authenticate input conditions.

All of these circuits incorporate automatic leading and/or trailing-edge zero-blanking control (RBI\ and RBO\). Lamp test (LT\) of these types may be performed at any time when the BI\/RBO\ node is at a high level. All types contain an overriding blanking input (BI) which can be used to control the lamp intensity by pulsing or to inhibit the outputs. Inputs and outputs are entirely compatible for use with TTL logic outputs.

Series 54 and Series 54LS devices are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74 and Series 74LS devices are characterized for operation from 0°C to 70°C.

产品特性

'246, '247, 'LS247 feature

Open-Collector Outputs Drive Indicators Directly
Lamp-Test Provision
Leading/Trailing Zero Suppression

'LS248 feature

Internal Pull-Ups Eliminate Need for External Resistors
Lamp-Test Provision
Leading/Trailing Zero Suppression

All Circuit Types Feature Lamp Intensity Modulation Capability

下面可能是您感兴趣的TI德州仪器公司解码器/编码器/多路复用器元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购