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SN54HC259 - 产品图解:
SN54HC259-8 位可寻址锁存器
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TI产品 - SN54HC259介绍
SN54HC259 - 8 位可寻址锁存器

SN54HC259是TI公司的一款其它锁存器产品,SN54HC259是8 位可寻址锁存器,本页介绍了SN54HC259的产品说明、应用、特性等,并给出了与SN54HC259相关的TI元器件型号供参考。

SN54HC259 - 8 位可寻址锁存器 - 其它锁存器 - 触发器/锁存器/寄存器 - TI公司(Texas Instruments,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. In the addressable-latch mode, data at the data-in terminal is written into the addressed latch. The addressed latch follows 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, G\ should be held high (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output follows 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.

产品特性

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Inverting Outputs Drive Up To 10 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 14 ns
  • ±4-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • 8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion With Storage
  • Asynchronous Parallel Clear
  • Active-High Decoder
  • Enable Input Simplifies Expansion
  • Expandable for n-Bit Applications
  • Four Distinct Functional Modes

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