SN74LS259B - 八路可寻址锁存器

SN74LS259B是TI德州仪器公司的一款其它锁存器产品，SN74LS259B是八路可寻址锁存器，本站介绍了SN74LS259B的封装应用图解、特点和优点、功能等，并给出了与SN74LS259B相关的TI元器件型号供参考。

SN74LS259B - 八路可寻址锁存器 - 其它锁存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These 8-bit addressable latches are designed for general purpose storage applications in digital systems. Specific uses include working registers, serial-holding registers, and active-high decoders or demultiplexers. They are multifunctional devices capable of storing single-line data in eight addressable latches, and being a 1-of-8 decoder or demultiplexer with active-high outputs.

Four distinct modes of operation are selectable by controlling the clear (CLR\) and enable (G\) inputs as enumerated in the function table. In the addressable-latch mode, data at the data-in terminal is written into the addressed latch. The addressed latch will follow the data input with all unaddressed latches remaining in their previous states. In the memory mode, all latches remain in their previous states and are unaffected by the data or address inputs. To eliminate the possibility of entering erroneous data in the latches, enable G\ should be held high (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output will follow the level of the D input with all other outputs low. In the clear mode, all outputs are low and unaffected by the address and data inputs.

The SN54259 and SN54LS259B are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74259 and SN74LS259B are characterized for operation from 0°C to 70°C.

产品特性

8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion with Storage
Asynchronous Parallel Clear
Active High Decoder
Enable/Disable Input Simplified Expansion
Expandable for N-Bit Applications
Four District Functional Modes
Package Options Include Ceramic Chip Carriers and Flat Packages in Addition to Plastic and Ceramic DIPs
Dependable Texas Instruments Quality and Reliability

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