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SN74LS166A - 产品图解:
SN74LS166A-串行输出移位寄存器
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TI产品 - SN74LS166A介绍
SN74LS166A - 串行输出移位寄存器

SN74LS166A是TI公司的一款移位寄存器产品,SN74LS166A是串行输出移位寄存器,本页介绍了SN74LS166A的产品说明、应用、特性等,并给出了与SN74LS166A相关的TI元器件型号供参考。

SN74LS166A - 串行输出移位寄存器 - 移位寄存器 - 触发器/锁存器/寄存器 - TI公司(Texas Instruments,德州仪器)

产品描述

The '166 and 'LS166A 8-bit shift registers are compatible with most other TTL logic families. All '166 and 'LS166A inputs are buffered to lower the drive requirements to one Series 54/74 or Series 54LS/74LS standard load, respectively. Input clamping diodes minimize switching transients and simplify system design.

These parallel-in or serial-in, serial-out shift registers have a complexity of 77 equivalent gates on a monolithic chip. They feature gated clock inputs and an overriding clear input. The parallel-in or serial-in modes are established by the shift/load input. When high, this input enables the serial data input and couples the eight flip-flops for serial shifting with each clock pulse. When low, the parallel (broadside) data inputs are enabled and synchronous loading occurs on the next clock pulse. During parallel loading, serial data flow is inhibited. Clocking is accomplished on the low-to-high-level edge of the clock pulse through a two-input positive NOR gate permitting one input to be used as a clock-enable or clock-inhibit function. Holding either of the clock inputs high inhibits clocking; holding either low enables the other clock input. This, of course, allows the system clock to be free-running and the register can be stopped on command with the other clock input. The clock inhibit input should be changed to the high level only while the clock input is high. A buffered, direct clear input overrides all other inputs, including the clock, and sets all flip-flops to zero.

产品特性

  • Synchronous Load
  • Direct Overriding Clear
  • Parallel to Serial Conversion

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