HD74LS48

The HD74LS48 features active high output for driving lamp buffers.This HD74LS48 circuit has full ripple blanking input/output controls and a lamp test input.Display patterns for BCD input counts above 9 are unique symbols to authenticate input conditions.This HD74LS48 circuit incorporates automaticate input conditions.This circuit incorporates 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 high level.It contains an overriding blanking input (BI) which can be used to control the lamp intensity be pulsing or to inhibit the outputs.Inputs and outputs are entirely compartible for use with TTL or DTL logic outputs.

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Hitachi makes every attempt to ensure thatHD74LS48 are of high quality and reliability. However,contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,traffic, safety equipment or medical equipment for life support.

Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes,so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.HD74LS48is not designed to be radiation resistant.No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products.